Verilink C100 User Manual

“C” Series

• C100 T1/FT1 CSU/DSU

• C150 T1/FT1 CSU/DSU with Drop and Insert

User Manual

Part Number 880-502893-001-B
June 1999

Copyright notices

VERILINK CORPORATION DISTRIBUTES
THIS REFERENCE “AS IS” WITHOUT
WARRANTY OF ANY KIND, EITHER
LIMITED OR IMPLIED. Verilink Corporation
reserves the right to revise this publication
from time to time without notice. Some states
or jurisdictions do not allow disclaimer of
express or implied warranties in certai
transactions; therefore, this statement may
not apply to you.

Copyright  1997 Verilink Corporation. All
rights reserved.

The following are trademarks or registered
trademarks of Verilink Corporation: Access
System 2000, Access Manager 2000,
Advanced Programmable Architecture,
Advanced Communications Series, and Craft
Interface.

Your right t o copy software and this manual
is limited by copyright law. Making copies of
this reference, or any part thereof, without
prior written authorization from Verilink
Corporation is prohibited by law and
constitutes a punishable violation of the law.

Customer service and sales information

To receive more detailed information on
service options and pricing, contact
Customer Services at 1.800.VERILINK (1.800.
837-4546). Or access our FAX on Demand
System for our latest customer service
brochure at 1.800.957-LINK (1.800.957-5465).

FCC statement (for users of AS2000
equipment)

The Federal Communications Commission
(FCC) Rules require that you be notified of
the following:

This equipment has been tested and found to
comply within the limits for a Class A digital
device pursuant to Part 15 of the FCC rules.
These limits are designed to provide
protection against harmful interference in a
residential installation.

This equipment generates, uses, and can
radiate radio frequency energy and, if not
installed and used in accordanc e with the
instructions, may cause harmful interference

to radio communications. However, there is no
guarantee that interference will not occur in a
particular installation. If this equipment does
cause harmful interference to radio or
television reception, which can be determined
by turning the equipment off and on, the use
is encouraged to try to correct the interference
by one or more of the following measures:

■

Reorient or relocate the receiving antenna.

■

Increase the separation between the
equipment and receiver.

■ Connect the equipment into an outlet on a

circuit different from that to which the
receiver is connected.

■

Consult the dealer or an experienced
radio/TV technician for help.

Per FCC Part 68 requirements, the customer is
required to notify the Telephone Company
prior to disconnecting any CSU from the
network interface.

The FCC registration number for Access
System 2000 is GICUSA-18804-DE-N.

The following references apply to this system:
a.The FCC registration number for Access

System 2000 is GICUSA-18804-DE-N.

b.The ‘USOC’ jack required [USOC RJ48C/

M/X]

c.The Facility Interface Code for Digital

Service is 04DU9-1KN/ISN/ISN/12N.

d.The Service Order Code for Digital Service

is 6.0N.

Warnings and Caution Notices

Note: In ACE-base d modules, the battery referred to in
the following notices is contained inside the clock chip.

English

DANGER!

The battery could explode if it is incorrectly replaced!
Replace only with the same or equiva lent type recom­mended by the manufacturer. Dispose of used batteries
according to the manufacturer’s instructions.

DANGER!

T o a v oid electrical s hock in ca se of failure, th e power
supply must be installed by a professional installer. The
terminal labeled with the gro und symbol ( ) on the
power suppl y must be connected to a permanent earth
ground.

CAUTION!

Interconnectin g circuits must com ply with the require­ments of EN60 950:1992/A2:1933 Section 6.2 for tele­communications network voltages (TNV) circuits.

Français

ATTENTION!

Une explosion peut se produi re si la batterie est rem­placée d’ une façon incorrecte! Remplacez-la seulement
avec le même modêle de batterie ou un modèle équiva­lent selon les recommenda tions de manufacture. Dis­posez de les batter ies usées selon les instructions de
manufacture

ATTENTION!

Pour évite électrique choc en cas d e insuccès, la provi­sion de p ouvoir devré êtré installé par un installe ur pro­fessionnel. La terminal du l a provision de pouvoir,
marque du sy mbol de terre, ( ) doit connecté à un
permanent terre électrique.

ATTENTION!

Les circuits doivent êtré interconnectés de manière à ce
que l’ équipement continue à êtré en agrément avec
“EN60950:1992/A2:1933, S ection 6.2, pour les circuits
de voltage de liaisons d’ échanges (ré seau) par les télé­communications (TNV),” aprè s les connections de cir­cuits.

PELIGRO!

Para evitar con tacto con circuitos que electrocutan, la
fuente de alimentación debe ser instalada por un técnico
profesional. L a te rminal de la fu ente de al imen tación
marcada con el símbolo de tierra ( ) debe ser
conectada a un circuito de vuelta por tierra permanente.

CIRCUITOS A INTERCONECTARSE

Circuitos que se interconectan a la red de telecomunica­ciones deben hace rse de tal manera que cumplan con
los requisitos estipulados en las especificaciones
“EN60950:1992/A2:1933, Sección 6.2, para los voltages
de circuitos interconnectados a la Red de Telecomunica­ciones (TNV),” despues de terminar las connecciones
entre los circuitos.

Deutsch

VORSICHT!

Explosionsgefahr bei unsachgemäßem Ersetzen der
Batterie! Batterie gleichen Typs und gleicher Qual ität
benutzen, wie vom Hersteller empfohlen. Entsorgung der
Batterie nach Anweisung des Herstellers!

VORSICHT, GEFAHR!

Um keinen Schlag zu erhalten beim V ersagen der elec­trischen Anlage, muss der Stromanschluss v on einem
Elektriker vorgeno mmen werden. Der elektrisc he Pol,
versehen mit dem Erdsymbol ( ) muss am Str oman­schluss permanent geerdet sein.

VORSICHT!

Schaltungen, die in den Geräten zusammengeschaltet
sind, müssen weiterhin den Vorschriften EN60950:1992/
A2:1933, Absatz 6.2 für Telecommunications Netz Span­nung (TNV) Schaltkr eize ents prechen.

Españole

PELIGRO!

La bateria puede explotar is se reemplaza incorrecta­mente. Reemplace la bateria con el mismo tipo de bate­ria ó una equivalente reco me nda da por el
manufacturero. Disponga de las baterias de acuerdo a
las instrucciones del manufacturero.

Important Safety

Instructions

When handling this equipment,

follow these basic safety
precautions to reduce the risk of electric
shock and injury:

• Unplug the equipment from the wall
outlet and refer servicing to qualified
service personnel under the following
conditions:

a.When the power supply cord or plug is

damaged or frayed.

• Follow all warning s a nd instruc tions
marked on the product and in the
manual.

• Unplug the hardware from the wall
outlet before cleaning. Do not use
liquid cleaners or aerosol cleaners. Use
a slightly damp cloth for cleaning.

• Do not place this product on an
unstable cart, stand, or table. It may
fall, causing serious damage to the
product.

• Slots and openings in the shelves are
provided for ventilation to protect
them from overheating. These
openings must not be blocked or
covered. Never place this product near
a radiator or heat register.

• This product should be operated only
from the type of power source
indicated on the marking label and
manual. If you are unsure of the type of
power supply you are using, consult
your dealer or local power company.

b.If liquid has been spilled into the

product.

c.If the product has been exposed to rain

or water.

d.If the product has been dropped or if the

cabinet has been damaged.

• Do not allow anything to rest on the
power cord. Do not locate this product
where the cord will interfere with the
free movement of people.

• Do not overload wall outlets and
extension cords, as this can result in
fire or electric shock.

• Never push objects of any kind into the
shelves. They may touch dangerous
voltage points or short out parts that
could result in fire or electric shock.
Never spill liquid of any kind on this
equipment.

Table of Contents

CHAPTER 1 - Introduction

Overview................................................................................................................................ ............... 1-1

Controls, indicators, user interfaces, and ports............................................................................... 1-3

Applications................................................................................................................................ .......... 1-6

CHAPTER 2 - Installation

CHAPTER 3 - Configuration Using the DIP Switches

Overview................................................................................................................................ ............... 3-1

Programming the unit configuration (C100 and C150).................................................................. 3-3

Programming the network interface................................................................................................. 3-5

Programming the DSX1 Interface (C150 only) ................................................................................ 3-8

Programming the Synchronous Channel Interface (C100 and C150)......................................... 3-10

.............................................................................................................................1-1

Standards compliance ...................................................................................................... 1-2

Configuration and management options ...................................................................... 1-2

Timing options .................................................................................................................. 1-2

Physical configuration ...................................................................................................... 1-2

DIP-switch and console interfaces ................................................................................. 1-3

C100 front and rear panels .............................................................................................. 1-3

C100 rear panel ...................... ............................................................................................ 1-4

C150 front and rear panels .............................................................................................. 1-4

C150 rear panel ...................... ............................................................................................ 1-5

C100 or C150 applications ............................................................................................... 1-6

C150 only applications ..................................................................................................... 1-7

............. .......... ........ ................................................................................................2-1

Unpacking and Inspection .............................................................................................. 2-1

Power On and Self-Test ................................................................................................... 2 -1

Installation ......................................................................................................................... 2-1

Accessing DIP switches ................................................................................................... 3-1

Unit address ....................................................................................................................... 3-3

Switches, console, or SNMP activated ........................................................................... 3-3

Remote loop disable ...... .. .. .. .. .. .. .. ................ ..................................................................... 3-4

NI Framing ......................................................................................................................... 3-5

NI Coding .......................................................................................................................... 3-5

Density ................................................................................................................................ 3-6

54016 or T1.403 .............. .................................................................................................... 3-6

Line build out .................................................................................................................... 3-6

Timing ................................................................................................................................ 3-6

DSX1 in or out ...................................... ............................................................................. 3-8

DSX1 framing ........................ ................ ............................................................................ 3-8

DSX1 coding ........ .............................. ................................................................................ 3-9

DSX1 line length/build out .............. .. ................ ............................................................. 3-9

Idle or busy character ....................................................................................................... 3-9

Synchronous Channel Interface .................................................................................... 3-10

56000 or 64000 ................ .................................................................................................3-11

Continuous or switched carrier (Receive Line Signal Detect) control .................... 3-12

Synchronous Channel Invert Data ............................................................................... 3-13

Synchronous Channel Invert External Transmit Clock ............................................ 3-13

.........................................................................................3-1

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Synchronous Channel Intern al Or External Transmi t Clock ................................... 3-13

Programming the DS-0s and DSX-1s (C100 and C150)................................................................ 3-15

DS-O assignment ............................................................................................................ 3-15

CHAPTER 4 - LED Indicators and Diagnostics

Overview................................................................................................................................ ............... 4-1

Channel LED Indicators...................................................................................................................... 4-2

C150 only ................................. .. .. .. .. .. ................................................................................. 4-2

CI Chan TX DATA ............................................................................................................ 4-2

CI Chan RX DATA ........................................................................................................... 4-2

CI Chan RTS ...................................................................................................................... 4-2

CI Chan CTS ...................... ................................................................................................ 4-2

CI Chan DSR ................ ...................................................................................................... 4-3

CI Chan CD ........................................................................................................................ 4-3

CI Chan DTR ..................................................................................................................... 4-3

Alarm and Network Interface LEDs ................................................................................................. 4-4

BPV Alarm ......................................................................................................................... 4-4

Density Alarm ................................................................................................................... 4-4

Blue Alarm ......................................................................................................................... 4-4

Yellow Alarm .................................................................................................................... 4-4

NI TX DATA ...................................................................................................................... 4-4

NI RX Data ...................... ................................................................................................... 4-4

NI Lock ............................................................................................................................... 4-4

Loopbacks and diagnostics LEDs...................................................................................................... 4-5

Local Network Interface (NI) Loopback ........................................................................ 4-5

Local DSX1 channel loopback ......................................................................................... 4-6

Local Synchronous Channel Loopback ......................................................................... 4-7

Local Payload Loopback .................................................................................................. 4-8

Remote Network Interface (NI) Loopback .................................................................... 4-8

Remote DSX1 channel loopback ..................................................................................... 4-9

Remote Synchronous Channel Loopback .................... .. ............................................. 4-10

Test Pattern ...................................................................................................................... 4-10

Select and Start Push-button ......................................................................................... 4-12

Customer Interface DSX1 monitor jack ....................................................................... 4-14

............ .................. ....................................................................4-1

CHAPTER 5 - Using the Console Port

Overview................................................................................................................................ ............... 5-1

Cabling a Terminal to the Console Port .......... .............................................................. 5-1

Cabling a Modem to the Console Port ........................................................................... 5-2

Using the console port......................................................................................................................... 5-3

Setting up the terminal ..................................................................................................... 5-3

Console menu/command keys ...................................................................................... 5-4

Main Menu ......................................................................................................................... 5-5

Activating and deactivating the console ....................................................................... 5-5

Navigating the menu tree ................................................................................................ 5-6

Service................................................................................................................................ .................... 5-6

Utilities ................................................................................................................................ .................. 5-7

Set Time .............................................................................................................................. 5-7

Set Date ............................................................................................................................... 5-8

Rename Header ................................................................................................................. 5-8

Set Password ...................................................................................................................... 5-8

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CHAPTER 6 - Configuring the C100/C150 Using the Console Port

Navigating the menu tree ................................................................................................ 6-1

Configuration menu .......................... .................................................................................................. 6-2

Overview of using the menu ........................................................................................... 6-2

Programming the Network Interface................................................................................................ 6-4

NI framing ......................................................................................................................... 6-4

NI coding ........................................................................................................................... 6-4

Density ................................................................................................................................ 6-4

AT&T or ANSI .................. .. .. .. .. .. .. .. .................................................................................. 6-4

Line build out .................................................................................................................... 6-5

Timing ................................................................................................................................ 6-5

Remote loop disable ...... .. .. .. .. .. .. .. ................ ..................................................................... 6-5

Programming the customer interface ............................................................................................... 6-6

C150 ................................................................................................................................ .... 6-6

C100/C150 ......................................................................................................................... 6-7

Programming the DS0s (C100 and C150) ......................................................................................... 6-9

C150 DSO assignment ........................... .. .. .. .. ................................................................... 6-9

C100 DSO assignment ........................... .. .. .. .. ................................................................... 6-9

CHAPTER 7 - Configuring the Console Port for SNMP

.......................................................................................7-1

Navigating the menu tree ................................................................................................ 7-1

Configuring for SNMP........................................................................................................................ 7-2

Overview ............................................................................................................................ 7-2

Procedure for setting the IP address .............................................................................. 7-2

Connecting the Network Management Console .......................................................... 7-3

.......................................................................6-1

CHAPTER 8 - Performance Monitoring with the Console Port

Main Menu ......................................................................................................................... 8-1

Navigating the menu tree ................................................................................................ 8-1

Local Registers............................ .................................................................................................... ...... 8-3

Diagnostics and Statistics.................................................................................................................... 8-5

Local NI loop ................ ..................................................................................................... 8-6

Local DSX-1 loop (C150) .................................................................................................. 8-6

Local channel loop ............................................................................................................ 8-6

Local payload loop ........................................................................................................... 8-6

Remote NI loop ....................................... ..........................................................................8-6

Remote channel loop ................ .. .. .. .. .. .. ............................................................................ 8-6

Remote DSX-1 loop (C150) ........................ ...................................................................... 8-7

Test pattern (C100) ............................................................................................................8-7

Test pattern (C150) ............................................................................................................8-7

Test Seconds ...................................................................................................................... 8-8

Secs In Err and Error Free Secs ....................................................................................... 8 -8

Status ................................................................................................................................ .. 8-8

Counters and Statistics ..................................................................................................... 8-9

APPENDIX A - C100 and C150 Specifications

............ .............. ..............................................................A-1

Network Interface (NI) .................................................................................................... A-1

Customer Interface (CI) .................................................................................................. A-1

Network protection .......................... ............................................................................... A-2

Indicators .......................................................................................................................... A-2

Switches ............................................................................................................................. A-3

Loopbacks generated ....................................................................................................... A-4

.............................................................................8-1

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Loopbacks responded to ................................................................................................. A-4

Pattern generator and checker ....................................................................................... A-4

Power input and consumption ...................................................................................... A-4

Physical ............................................................................................................................. A-4

Environmental ..................................................................................................................A-5

APPENDIX B - Sample Applications

............ .. .. .. .. .. .. .. .. .. .. .....................................................................B-1

C100 T-1 Using V.35 Interfaces In Router Application .................................................................. B-2

T-1 C100/C150 CSU/DSU Connecting To A Frame Relay Service.............................................. B-4

C100/C150 T-1 CSU/DSU Connecting Two Routers in LDM mode........................................... B-6

C150 T-1 CSU/DSU connecting two PBXs and converting D4 To ESF ....................................... B-8

C150 T-1 CSU/DSU connecting two PBXs and two routers ....................................................... B-10

APPENDIX C - Interfaces and Cables

................................................................................................... C-1

Network Interface (NI)....................................................................................................................... C-1

CCITT V.35 Channel Interface ....................................................................................... C-2

RS232/RS530/RS422 channel interfaces ...................................................................... C-3

Console IN Interface ........................................................................................................ C-5

Console OUT Interface .................................................................................................... C-5

Cables................................................................................................................................ .................... C-6

Part Number CB8S0003 ................................................................................................... C-6

Part Number CBMS0001 ................................................................................................. C-7

Part Number CH2S0001RS232 Hood ............................................................................ C-7

Part Number CH2R0001–RS232 Hood ......................................................................... C-8

Part Number CB4A0002 .................................................................................................. C-9

APPENDIX D - C100 and C150 SNMP MIB

............................................................................................. D-1

Overview................................................................................................................................ .............. D-1

Transmission group............................................................................................................................ D-2

Object ID prefix for the MIB ........................................................................................... D-2

DS1 Near End Group ...................................................................................................... D-3

DS1 Configuration Table (x = 6) .................................................................................... D-3

DS1 Current Table (x = 7) ............................................................................................... D-7

DS1 Interval Table (x = 8) ............................................................................................... D-8

DS1 Total Table

(x = 9) ............................................................................................................................... D-10

DS1 Far End Group ....................................................................................................... D-11

DS1 Fractional Group (x = 13) ...................................................................................... D-11

Private Enterprise - Verilink Proprietary CSU-1-MIB ................................................................. D-14

System Configuration Group

(sysConfig x=1) .............................................................................................................. D-15

Channel Configuration Group

(chnConfig x=2) .............................................................................................................. D-16

DSX1 Configuration Group (dsx1Config x= 3)

—C150 only— .................... ............................................................................................. D-17

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List of Figures

Figure 1-1 C100 front panel .............................................................................................................................. 1-3

Figure 1-2 C100 rear panel ................................................................................................................................ 1-4

Figure 1-3 C150 front panel .............................................................................................................................. 1-4

Figure 1-4 C150 rear panel ................................................................................................................................ 1-5

Figure 1-5 C100 or C150 T-1 CSU/DSU connecting two LANS over a T-1 service .................................. 1-6

Figure 1-6 C10 0 or C150 T-1 CSU/DSU connecting to a frame relay service ........................................... 1-6

Figure 1-7 C100 or C150s connecting two sites over customer-owned four-wire facility ....................... 1-7

Figure 1-8 Two C150s connecting PBXs together over T1 .......................... ................................................. 1-7

Figure 1-9 C150s connecting two sites over T1 ............................ .................................................................. 1-8

Figure 1-10 C150s connecting two sites with PBXs over a customer-owned four-wire facility ............... 1-8

Figure 1-11 C150s connect two sites over T1 with the PBX many floors from the remote site ................ 1-9

Figure 3-1 Block diagram of Carrier (Receive Line Signal Detect) Control ............................................. 3-13

Figure 4-1 C100 Front Panel LEDs ................................................................................................................... 4-1

Figure 4-2 C150 front panel LEDs .................................................................................................................... 4-1

Figure 4-3 C100 T-1 CSU/DSU in Local NI Loopback .................................................................................4-5

Figure 4-4 C150 T-1 CSU/DSU in Local NI Loopback .................................................................................4-6

Figure 4-5 C150 T-1 CSU/DSU in Local NI Loopback .................................................................................4-6

Figure 4-6 C150 DSX-1 CSU/DSU in Local Channel Loopback ................................................................. 4-7

Figure 4-7 C100 T-1 CSU/DSU in Local CI Channel Loopback .................................................................. 4-7

Figure 4-8 C150 T-1 CSU/DSU in Local CI Channel Loopback .................................................................. 4-7

Figure 4-9 C10 0T-1 CSU/DSU in Local Payload Loopback ........................ ................................................ 4-8

Figure 4-10 C150 T-1 CSU/DSU in Local Payload Loopback ....................................................................... 4-8

Figure 4-11 Remote C100T-1 CSU/DSU in Remote Network Interface Loopback .................................... 4-9

Figure 4-12 Remote C150T-1 CSU/DSU in Remote Network Interface Loopback .................................... 4-9

Figure 4-13 Remote C150 CSU/DSU in remote DSX-1 channel loopback ................ .................................. 4-9

Figure 4-14 Remote C100 T-1 CSU/DSU in Remote Channel Loopback .... .. ............................................ 4-10

Figure 4-15 Remote C150 T-1 CSU/DSU in Remote Channel Loopback .... .. ............................................ 4-10

Figure 4-16 Local C100 sending pattern to network with remote T-1 CSU in NI loopback ................... 4-11

Figure 4-17 Local C100 CSU/DSU sending 2047 pattern to channel in local loopback .......................... 4-11

Figure 4-18 Local C150 sending pattern to network with remote T-1 CSU in NI loopback ................... 4-11

Figure 4-19 Local T-1 C150 CSU/DSU Sending 2047 Pattern to Channel in Local Loopback ............... 4-12

Figure 4-20 C150 T-1 CSU/DSU wiring diagram of DSX1 Monitor Jack .................................................. 4-14

Figure 5-1 Screen hierarchy T-1 CSU/DSU ............ ........................................................................................ 5-3

Figure 5-2 Main Menu with Console Deactivated ........................................................................................ 5-5

Figure 5-3 Main Menu with Console Activated ............................................................................................ 5-6

Figure 5-4 Service screen (Not currently implemented) ............ .. ................................................................ 5-6

Figure 5-5 Utilities screen ................................................................................................................................ .5-7

Figure 6-1 Main Menu with Console Activated ............................................................................................ 6-1

Figure 6-2 Configuration–Console menu ....................................................................................................... 6-2

Figure 7-1 Main Menu with Console Activated ............................................................................................ 7-1

Figure 7-2 Configuration–Console example menu showing IP address field .......................................... 7-2

Figure 8-1 Main Menu with Console Deactivated ........................................................................................ 8-1

Figure 8-2 Main Menu with Console Activated ............................................................................................ 8-2

Figure 8-3 Local Registers Page 1 .................................................................................................................... 8-3

Figure 8-4 Local Registers Page 2 .................................................................................................................... 8-4

Figure 8-5 Diagnostics and Statistics Screen ............................ ...................................................................... 8-5

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Figure B-1 Example: C100/C150 T1 CSU/DSUs connecting two LANs together over T1/F-T1 ...........B-2

Figure B-2 Using the C100 T-1 CSU/DSU to connect to a Frame Relay service .......................................B-4

Figure B-3 Using the T-1 C100/C150 CSU/DSUs connecting two routers in LDM mode ......................B-6

Figure B-4 C150 T-1 CSU/DSUs connecting two PBXs over T-1 and converting D4 to ESF ..................B-8

Figure B-5 C150 CSU/DSUs connecting two PBXs and two routers over a T-1 facility ........................B-10

Figure C-1 RJ48C 8-pin modular to modular straight-through 6-foot Network Cable ........................... C-6

Figure C-2 RJ11C 6-Pin Modular to Modular Straight-through Cable–Console IN to RS232 ................ C-7

Figure C-3 Console IN Port to a Terminal ...................................................................................................... C-7

Figure C-4 T-1 CSU/DSU Console IN Port to a Modem .......................... ................................................... C-8

Figure C-5 Optional DB25 (RS530) to DB37 (RS422) Adapter 6-foot Cable .............................................. C-9

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List of Tables

Table 3-1 C100/C150 Switch pack 1—Unit Configuration ........................................................................... 3-3

Table 3-2 C100 and C150 Switch-2: Network Interface ................................................................................. 3-5

Table 3-3 SWITCH Pack 3 - DSX1 interface (C150 only) ............................................................................... 3-8

Table 3-4 Switch pack-4–C100 and C150 custome r interface ..................................................................... 3-10

Table 3-5 Number of 56000 or 64000 DS0s selected ..................................................................................... 3-11

Table 3-6 Switch pack-5: C100/C150 DS0-01 through DS0-08 and C150 DSX1-01 through DSX1-08 . 3-15
Table 3-7 Switch pack-6: C100/C150 DS0-09 through DS0-16 and C150 DSX1-09 through DSX1-16 . 3-16
Table 3-8 Switch pack-7: C100/C150 DS0-17 through DS0-24 and C150 DSX1-17 through DSX1-24 . 3-16

Table B-1 Switches: C100/C150 CSU/DSUs connecting two LANs o ver T1/F-T1 ..................................B-3

Table B-2 Switches: C100/150 T-1 CSU/DSU to Connect to a Frame Relay Service ................................B-5

Table B-3 Switches: C100/150 T-1 CSU/DSUs Connecting Two Routers in LDM Mode ........................B-7

Table B-4 Switches: C150 CSU/DSUs connecting PBXs over T-1 and converting D4 to ESF ..................B-9

Table B-5 Switches: C150 CSU/DSUs connecting PBXs and routers over a T-1 facility ........................B-11

Table C-1 RJ48C 8 position mo dular conn ector on rear of un it labeled NI ............................................... C -1

Table C-2 The V.35 Interface 34-pin Female Connector Wiring on Rear of Unit: V.35 Selected ............. C-2

Table C-3 DB25 Pin Female Connector Wiring on Rear of Unit When RS23 2 Is Sel ected ....................... C-3

Table C-4 DB25-Pin Female Connector Wiring on Rear of Unit When RS530 Is Select ed ....................... C-4

Table C-5 6-Position Modular Console IN Connector on Rear of Unit ...................................................... C-5

Table C-6 6-Position Modular Console OUT Connector on Rear of Unit .................................................. C-5

Table C-7 Pinout: RJ48C 8-pin Modular to Modular Straight-Through 6-foot Cable to Network ......... C-6

Table C-8 Pinout: RJ11C 6-Pin Modular to Modular Straight-through–Console IN t o RS232 ................ C-7

Table C-9 Pinout: Console IN Port to a Terminal ............. .. .... .. .... .... .. ........................................................... C-7

Table C-10 Pinout: T-1 CSU/DSU Console IN Port to a Modem .................................................................. C-8

Table C-11 Pinout: Optional DB25 (RS530) to DB37 (RS422) Adapter 6-foot Cable ................................... C-9

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Chapter

1

Overview

Introduction

This manual is the operating and refe rence manual for the Verilink “C”
Series products: the C100 T1/FT1 CSU/DSU and the C150 T1/FT1
CSU/DSU with Drop and Insert. These standalone devices are T1 and
fractional T1 Channel Service Units/Data Service Units. The C150 has
the additi onal func tionality of Drop - a nd-insert.

This manual assumes you are already familiar with T1 industry
standards and terminology.

The C100 and C1 50 T-1 CSU/DSUs connect the following T-1 customer
equipment to T-1 carrier services:

■ T-1 multiplexers

■ routers

■ bridges

■ switches

■ PBXs (C150 only)

The C150 comes equipped additionally with a DSX-1 (T1) drop­and-insert channel.

They can be used single-ended in a T-1/fractional T-1 application, i
pairs on a T-1 carrier provided service, or in pairs when used as
Limited Distance Modems (LDMs) using a customer provided four­wire facility.

The C100 comes standard with a Network Interface (T-1) and a
synchronous channel which supports any multiple of 56K and 64K bps
of serial data. The synchronous channel includes three built-in
interfaces: V.35, RS530/RS422 and the RS232 standard.

All DS-0s can be allocated to either channel or split between them and
can be contiguous or non-contiguous for full or fractional T-1
applications.

The C100/150 supports D4 or ESF Framing with AMI or B8ZS coding.

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Verilink C100 and C150 T1/FT1 CSU/DSU

1-1

Introduction

Standards compliance

Configuration and management options

Timing options

The C100/C150 is compliant with the following telecommunication
and Federal standards:

■ AT&T Technical Reference ESF 54016

■

AT&T Technical Reference 62411

■ ANSI T1.403 specification

■ FCC Part 15 and Part 68

■

Various SNMP standards (See Appendix D,

MIB

.)

C100 and C150 SNMP

The C100/C150 provides an embedded SNMP agent for management
and unit configuration. Other methods of configuration and
management are front panel LEDs and DIP switches and an ASCII
terminal console interface.

The C100 has three timing choices, Network, Internal and Channel,
enabling the unit to be used in a variety of network applications.

Physical configuration

The C150, additionally, has a DSX-1 timing option.

The unit is packaged in a rugged extruded aluminum case which ca
be used as a tabletop model or mounted in groups of eight in an
optional rackmount unit. It comes with a Network interface cable, an
ASCII console cable and a 110 VAC-to-12 VDC adapter.

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Verilink C100 and C150 T1/FT1 CSU/DSU

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Controls, indicators, user interfaces, and ports

This sections describes the C100/150 user interfaces, controls and
indicator s , and data and netwo rk po r ts.

Introduction

DIP-switch and console interfaces

C100 front and rear panels

Figure 1-1 C100 front panel

The C100/C150 T-1 CSU/DSU is configured with simple to use DIP
switches. As illustrated in Figure 1-1, color-coded LED indicators
display status and loopbacks simultaneously.

The C100 T-1 CSU/DSU also includes a user-friendly ASCII console
that can be used instead of the DIP switches. Two console connectors
on the rear of the unit permit up to eight units to be multi-drop polled
and controlled by a single console connected either locally or remotely.

The console port supports VT100s and PC terminal emulation mode,
with either a direct or dial-up modem connection.

06/17/97

Push-button switches

Two push-b utton switches on the front panel are used to test all local
and remote units.

C100 and C150 T1/FT1 CSU/DSU

1-3

Introduction

C100 rear panel

Figure 1-2 C100 rear panel

NI CONSOLE

CONSOLE

IN OUT

C150 front and rear panels

The C100 has no DSX-1 connector on its rear panel.

RS-530/RS-422/RS-232

The C100 T-1 CSU/DSU can generate and detect five local and remote
loopbacks. (The C150 has seven.) A built-in 2047 pattern generator and
checker is used to self-test the unit as well as test the facility and
remote unit. On the C150, a DSX monitor jack on the Customer
Interface (CI) side provides access for external test equipment.

Figure 1-3 C150 front panel

CI-CUSTOMER INTERFACES DC

V.35

IN

DSX-1 bantam signal access jacks

1-4

The C150 has DSX-1 and channel LEDs on the front panel. The
Customer interface signals are different from the C100 front panel.
They are labeled DSX-1 and Channel instead of Data and Control. The
individual LEDs are: LCK, TX, and RX instead if RTS, CTS, and DSR.
The Diagnostics LEDs are also labeled differently from the C100
Loopback and Test LEDs.

Verilink C100 and C150 T1/FT1 CSU/DSU

06/12/97

Introduction

C150 rear panel

The C150 has a DSX-1 connector on the rear panel.

Figure 1-4 C150 rear panel

NI CONSOLE

CONSOLE

IN OUT

RS-530/RS-422/RS-232

CI-CUSTOMER INTERFACES DC

DSX-1V.35

IN

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C100 and C150 T1/FT1 CSU/DSU

1-5

Introduction

N

N

Applications

The C150 T-1 CSU/DSU can be used in all C100 applications plus
drop-and-insert applications. The C100 and C150 synchronous channel
includes an RS232, RS422/RS530 and a V.35 interface.

The C150 includes both the DSX-1 port an d synchronou s data channel
as standard. The DSX-1 port can drive up to 6000 feet.

The following subsection give some typical applications where the
C100 and C150 T-1 CSU/DSUs can be used.

C100 or C150 applications

Figure 1-5 shows the T-1 CSU/DSU connecting two sites over a T-1

facility in the first of two very basic applications. The Network
Interface (NI) side of each unit connects to the T-1 facility and the
Customer Interface (CI) synchr onous interfac e of each unit connects to
the customer LAN Routers.

The synchronous channel interfaces can be RS232, RS530/RS422 or
V.35. They can be changed by toggling a switch since they are built-in,
and they can be different at each end.

The speed of the synchronous channel can be any multiple of 56000 or
64000 bps up to 1536000 bps.

Figure 1-5 C100 or C150 T-1 CSU/DSU connecting two LANS over a T-1 service

Local Site

C100/150

LAN LAN

ROUTER

CI Sync

TEL-LINK

................

T-1 CSU/DSU

NI

NETWORK

Remote Site

TEL-LINK

I

................

T-1 CSU/DSU

C100/150

CI Sync

ROUTER

Figure 1-6 shows the T-1 CSU/DSU in a single-ended application

connected to a Frame Relay Service. The Network Interface (NI) side of
the unit connects to the T-1 facility and the Customer Interface (CI)
synchronous channel of the unit connects to the customer LAN Router.

Figure 1-6 C100 or C150 T-1 CSU/DSU connecting to a frame relay service

Local Site

LAN

ROUTER

1-6

CI Sync

Verilink C100 and C150 T1/FT1 CSU/DSU

TEL-LINK

C100/150

................

T-1 CSU/DSU

I

FRAME
RELAY
SERVICE

06/12/97

Figure 1-7 shows a typical application for the CSU/DSU connecting

N

two sites and using both channels over a T-1 facility. The Network
Interface (NI) side of each unit connects to a customer owned four­wire facility and the Customer Interface (CI) s ide of e ach unit connects
to the customer equipment. In this application, the T-1 CSU/DSUs ca
be as far as 6000 feet apart.

Figure 1-7 C100 or C150s connecting two sites over customer-owned four-wire facility

Introduction

Local Site

Customer
Four-wire
Facilit

ROUTER

C150 only applications

C100/150

CI Sync

TEL-LINK

................

T-1 CSU/DSU

NI

C150 applications can make use of drop-and-insert . Figure 1-8 shows
the C150 T-1 CSU/DSU connecting two sites over a T-1 facility in the
second of two very basic applications. The Network Interface (NI) side
of each unit connects to the T-1 service and the Customer Interface (CI)
DSX-1 interface of each unit connects to the customer PBX.

Figure 1-8 Two C150s connecting PBXs together over T1

Local Site

C150

PBX

CI DSX1

TEL-LINK

................

T-1 CSU/DSU

NI

NETWORK

Remote Site

C100/150

TEL-LINK

I

................

T-1 CSU/DSU

NI

CI Sync

Remote Site

C150

TEL-LINK

................

T-1 CSU/DSU

ROUTER

CI DSX1

PBX

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C100 and C150 T1/FT1 CSU/DSU

1-7

Introduction

N

N

Figure 1-9 shows a typical application for the C150 CSU/DSU

connecting two sites and using both Customer Interfaces connections
over a T-1 facility. The Network Interface (NI) side of each unit
connects to the T-1 facility and the Custom er Interface sid e of each unit
connects to the customer equipment. In this basic application, the user
is using 224 Kbps (4 DS-0s) for the router to router communication
and the remaining 1120K bps (20 DS-0s) for PBX to PBX voice
communications.

Figure 1-9 C150s connecting two sites over T1

Remote Site

C150

TEL-LINK

NI

................

T-1 CSU/DSU

CI DSX

CI Sync

PBX

ROUTER

Local Site

CI DSX

CI Sync

Local Site

C150

TEL-LINK

................

T-1 CSU/DSU

NI

NETWORK

Figure 1-10 is similar to the application described in Figure 1-8 sites

and uses both channels over a T-1 facility. The Network Interface (NI)
side of each unit connects to a customer owned four-wire facility and
the Customer Interface (CI) side of each unit connects to the customer
equipment. In this application, the T-1 CSU/DSUs can be as far as 6000
feet apart.

Figure 1-10 C150s connecting two sites with PBXs over a customer-own ed four-wire facility

Remote Site

C150

TEL-LINK

I

................

T-1 CSU/DSU

CI DSX

CI Sync

PBX

ROUTER

Local Site

CI DSX

CI Sync

C150

TEL-LINK

................

T-1 CSU/DSU

Customer
Four-wire

I

Facilit

PBX

ROUTER

PBX

ROUTER

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Verilink C100 and C150 T1/FT1 CSU/DSU

06/12/97

Figure 1-11 shows a typical application for the CSU/DSU connecting

two sites over a T-1 facil ity. In this application, the user is using 224K
bps (4 DS-0s) for the router-to router communications and the
remaining 1 120K bps (20 DS-0s) for PBX to PBX voice communications.
The PBX in this application happens to be over 100 floors away . Since
the C150 T-1 CSU/DSU has a long haul T-1 CSU on the DSX-1
interface, only one additional CSU, instead of two, is needed to
connect to the 104th floor.

Figure 1-11 C150s connect two sites over T1 with the PBX many floors from the remote site

Remote Site
104 th Floor

104th

C150

TEL-LINK

NI

................

T-1 CSU/DSU

Introduction

CI DSX1

PBX

PBX

ROUTER

Local Sit

CI DSX1

CI Sync

C150

TEL-LINK

................

T-1 CSU/DSU

Remote Site
Basement

C150

TEL-LINK

NI

NETWORK

NI

................

T-1 CSU/DSU

CI DSX1

CI Sync

ROUTER

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C100 and C150 T1/FT1 CSU/DSU

1-9

Introduction

1-10

Verilink C100 and C150 T1/FT1 CSU/DSU

06/12/97

Chapter

2

Unpacking and Inspection

Power On and Self­Test

Installation

All C100/C150 T-1 CSU/DSU's are shipped in cardboar d cartons with
foam inserts to protect the units from shock and vibration experienced
during shipment. Upon arrival of the equipment, inspect the condition
of the received cartons and compare all items to the packing list
attached to the upper right corner of the carton. Be sure to remove the
two cables from the cable storage compartment beneath the T-1
CSU/DSU. Notify both the carrier and the distributor immediately if
there are any damages. Notify the distributor immediately if there are
any shortages.

Before connecting any cables to the T-1 CSU/DSU, remove the
wallmount power supply from the shipping carton, plug one end into
the unit, and then plug the other end into an AC outlet. The T-1
CSU/DSU has built - in autom a tic sel f - test feature s an d when powered
on, will check the hardware in the unit. When power is first applied,
all twenty-one LEDS will light for four seconds and then three green
LEDS will be on for two seconds. If any of the LEDS do not light
during the sequencing test, a hardware problem may exist and
C100/C150 and/or the distributor should be notified immediately.

Installation

6/15/99

At this po int, the units are ready to b e programm ed. Pull d own the
front panel and program the units according to the instructions in
Section 3 of this document. Ensure the Network Interface framing and
coding are configured the same as the provisioning of the T-1 facility
Check with the T-1 carrier provider to ensure the T-1 line has been
tested and ready for use.

The following installation procedures are for a point-to-point T-1
facility. The basic strategy when installing the T-1 CSU/DSUs is to
install both units without any channel cables connected. After the
units are communicating with each other across the T-1 Network
successfully, then the channels will be connected and tested.

Verilink C100 and C150 T1/FT1 CSU/DSU

2-1

Installation

When installing a system with a DSX1 channel, keep it disabled
through the initial installation and testing until both units are
communicating with each other across the Network. Then the DSX1
channel should be enabled and tested.

After the unit passes the power-on self-test and has been programmed,
connect the T-1 Network Interface cable Part # CB8S0002 or CB8S0003
to the RJ48C on the rear of the unit labeled NI for Network Interface.

Plug the other end of the cable into the smart jack provided by the T-1
carrier.

Look at the LEDs on the front panel. All the LEDS on the front panel
should be off except for the NI Line LEDs. The NI Line TX (data) and
RX (data) LEDs may be on, off or blinking. The NI Line LED labeled
LCK (Frame Lock) should be solid green. If it is, the unit is now
communicating with the T-1 line. Perform this procedure at both ends
of the T-1 facility. Before connecting any channels at either end, both
units must have the NI Line LCK LED solid green.

When connecting channel cables, always secure them with the
provided screws. This will help avoid future intermitt ent problems.
Connect the appropriate channel cables at both ends and the system
should now be operational.

If a DSX1 channel is being used now is the time t o reprogram the units
to enable them at both ends. Connect the proper DSX1 cables at both
ends and check out PBX to PBX operation.

If any questions arise prior to installation or if any problems occur
during installation, call Verilink Customer Service for assistance.

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Verilink C100 and C150 T1/FT1 CSU/DSU

06/12/97

Chapter

3

Overview

Configuration Using the DIP Switches

This chapter describes configuring the C100 and C150 using the front
panel DIP switches.

The Console and SNMP are the other methods of configuring the
units. See the appropriate Console or SNMP chapter for these
methods.

The C100/C150 T-1 CSU/DSU is easy to program and can be
configured to meet a variety of user applications. The unit can be
programmed with DIP switches or through the async console port
which is described in Chapter 5,
This Section describes configuring the unit with DIP switches. There
are seven programming option switch packs S1 through S7 located
directly behind the front panel. Each switch pack contains eight
switches.

Using the Console Port

of this manual.

Accessing DIP switches

Specific applications with programming charts and cable descriptions
are in Appendix B,

Factory default settings are also described. The switch settings can be
shipped from the factory set for a specific customer application direct
to remote sites. This permits non-technical users at those sites to easily
install the units.

To access the DIP switch packs, grasp the knob located on the top
center of the front panel and pull outward and down. Located on the
back of the front panel is a condensed programming chart that can be
used to set the DIP switches in most applications without a manual.
Rocker-type DIP switches are used so t hey may be easily pro grammed
using a paper clip, small screwdriver, fingernail, etc. When the manual
refers to a DIP switch in the Off position, it means the rocker arm of the
switch is in its lowest position (down) on the side of the switch closest
to the front panel. When the manual refers to a DIP switch in the On
position, the rocker arm of the switch is in its lowest position on the
side of the switch towards the rear of the unit.

Sample Applications

.

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Verilink C100 and C150 T1/FT1 CSU/DSU

3-1

Configuration Using the DIP Switches

IMPORTANT

!

After setting the DIP switches, power-on/off the unit to get it to read the new
switch settings. Once the un it is configured and operating, powering-on/off
resets the performance and diagnostic register s.

A detailed description of the programming options as well as the
factory default settings follows.

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Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuration Using the DIP Switches

Programming the unit configuration (C100 and C150)

Switch pack 1 is used to program the Unit Configuration, including
selection of one of the three methods of configuring the unit. The
following table and subsections describe the Unit Configuration
settings:

Table 3-1 C100/C150 Switch pack 1—Unit Configuration

12345678 Setting

OffOffOff—————Unit Address 1
OnOffOff—————Unit Address 2
OffOnOff—————Unit Address 3
OnOnOff—————Unit Address 4
OffOffOn—————Unit Address 5
OnOffOn—————Unit Address 6
OffOnOn—————Unit Address 7
OnOnOn—————Unit Address 8
—————OffOff—Switches enabled
—————OnOff—Console enabled (activated)
—————OffOn—SNMP activated
———————OffEnable Channel Remote Loops
———————OnDisable Channel Remote Loops
Off Off Off Off Off Off Off Off Factory default setting

Unit address

Switches, console, or SNMP activated

06/17/97

Switch pack 1 positions 1,2 and 3 determine the Unit address. Setting
these switches is only necessary when using a single console to control
up to eight units. When controlling eight units (described in Chapter 5,

Using the Console Port

. Console Port) from a single console, each of the
eight units must be programmed with a different Unit address so the
console can communicate with them. If any two units are programmed
with the same address when connected together, the console will not
be able to operate properly with those two units.

Switch pack 1 positions 6 and 7 are used to select the method of
programming the C100/C150 T-1 CSU/DSU: switches, console, or
SNMP

With positions 6 and 7 Off, the DIP switches are enabled to configure
the unit. The configuration screen on the console is disabled (it still
may be viewed but no configuration changes are permitted).

C100 and C150 T1/FT1 CSU/DSU

3-3

Configuration Using the DIP Switches

When position 6 is set to On and 7 off, only the console port ca
perform configuration. The only switches that can be programmed are
the unit address switches discussed in a previous subsection.

In either switch position, loops and test pattern diagnostics, on both
the console, and front panel operate.

Console or SNMP

SNMP must be set starting in the Console mode and the Console is
used to enter the IP address, afte r which the switches are reset to
SNMP mode. Switch 7 is set to On to acti vate SNMP. For full details
and procedures, see Chapter 7,

Configuring the Console Port for SNMP

.

Remote loop disable

Switch pack 1 position 8 is used to enable/disable the unit from
recognizing most remote loop commands. With position 8 On, the unit
is disabled and does not respond to Remote Channel Loop. It will still
respond to the Network Interface Remote Loop commands (Loop
Up/Loop Down) and Payload Loop as required in Technical Reference
6241 1 and ANSI T1.403.

In the Off position, all remote loops are enabled and remote loops can
be set by remote co mmands.

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Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Programming the network interface

Switch pack 2 is used to program the Network Interface (NI). The
following is a description of the Network Interface settings:

Configuration Using the DIP Switches

Table 3-2 C100 and C150 Switch-2: Network Interface

12345678 Setting

Off-------ESF Framing
On-------D4 Framing

Off------B8ZS Coding
On------AMI Coding

Off-----Enforce Density
On-----Clear Channel

Off Off On Off Off Off Off Off Factory default setting

Off----AT&T 54016
On----ANSI T1.403

Off Off 0 dB Line Build Out
On On -7.5 dB Line Build Out
On Off -15 dB Line Build O ut
Off On -22.5 dB Line Build Out

Off Off Network supplies Timing
Off On Internal Timing
On Off DSX-1 supplies Timing
On On Channel supplies Timing

a

NI Framing

NI Coding

a. C150 only

Switch pack 2 position 1 determines the type framing. With position 1
Off, the unit will generate and expect ESF framing to and from the
Network Interface. With position 1 On, the unit will generate and
expect D4 framing. The framing selected in the unit must match the
framing option provided by the T-1 Carrier

Switch pack 2 position 2 selects the type of coding the unit will
generate. Position 2 Off, makes the unit generate B8ZS encoding and in
the On position causes the unit to generate AMI (Alternate Mark
Inversion) encoding. This coding selection, similar to the framing,
must match the provisioning provided by the T-1 Carrier supplier
otherwise intermittent errors may occur.

06/17/97

C100 and C150 T1/FT1 CSU/DSU

3-5

Configuration Using the DIP Switches

Density

54016 or T1.403

Switch pack 2 position 3 determines whether the unit will enforce
density to the Network or be Clear Channel. Position 3 in Off will
configure the unit to enforce density. This means that data from the
Channel being transmitted to the Network must meet the ones density
requirements specified in 62411 and T1.403 (approximately 1 in every 8
bits must be a one and no more than 15 consecutive zeros). If the data
from the channels violate density, the C100/C150 T-1 CSU/DSU wit
this option selected will put ones in the output data to guarantee
density compliance and in the process will put errors in the customer
data.

W ith position 3 On, the unit will let data f rom the Customer pass to the
Network transparently. If the facility provided by the T-1 Carrier is not
Clear Channel and this Clear Channel option is selected, the Customer
will experience data errors.

Switch pack 2 position 4 selects whether the unit is compatible with
the Technical Reference 54016 or ANSI T1.403 ESF Data L ink messages.
Switch pack 2 position 4 Off programs the unit to be compatible with
the 54016 specification. With this position On, the unit will be
compatible with the T1.403 specification. As with the preceding
selections, this option must match the requirements of the T-1 Carrier
provider.

Line build out

Timing

Switch pack 2 positions 5 and 6 program the Line Build Out. In most
cases, this selection will be set to 0 dB which is positions 5 and 6 Off.

Switch pack 2 positions 7 and 8 select the Timing option the unit will
use. Position 7 Off and 8 Off is Network supplies timing. This optio
must be selected when connecting to a public T-1 Network where data
will be going through a switch or DACS (MEGACOM, SUPERTRUNK,
etc.). W i th this option the C100/C1 50 T-1 CSU/DSU will lock its
timing on to the T-1 facility receive data and frequency lock its
transmit data to the receive data so the Network receives its own
timing back. If any of the other settings are used when connected to a
public T-1 facility, with switched services and the transmit path to the
Network is not frequency locked to the Network, timing slips will
occur. A typical indication of timing slips is frame losses occurring at a
fixed rate.

3-6

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuration Using the DIP Switches

Another common timing option is Internal. Many T-1 facilities
provided to the user such as T-SPAN do not go through switched
services. In these applications, the T-1 CSU/DSU must supply timing
at one end. Therefore, the CSU/DSU at one end must be programmed
for Internal. W ith Internal Timing selected, position 7 Off and 8 On, the
unit’s internal oscillator will be the timing source. When using this
mode, the remote unit at the other end must be programmed for
Network supplies Timing. This mode is also selected when using the
unit as a Limited Distance Modem (LDM) over Customer-owned
wiring.

Channel or DSX-1 timi n g

The other selections, Channel or DSX-1 supplies Timing is used when
the timing on the DSX-1 or Channel is derived from a Public Network
or an extremely accurate timing source.

DSX-1 timing is set if timing is provided by CPE equipment such as a
PBX or Channel Bank.

Channel timing is set when customer DTE is supplying timing (very
rare). It is most commonly used in tail circuit timing.

06/17/97

C100 and C150 T1/FT1 CSU/DSU

3-7

Configuration Using the DIP Switches

Programming the DSX1 Interface (C150 only)

Switch pack 3 is used to program the DSX1 Interface. The following is
a description of the DSX1 Interface settings:

Table 3-3 SWITCH Pack 3 - DSX1 interface (C150 only)

12345678 Setting

Off - DSX1 enabled
On DSX1 disabled

Off ESF Framing
On D4 Framing

Off B8ZS Coding
On AMI Coding

Off Off Off 133 feet or 0 dB Line Build Out
On Off Off 266 feet
Off On Off 399 feet
On On Off 533 feet
On On On 655 feet
Off Off On -7.5 dB Line Build Out
On Off On -15 dB Line Build Out
Off On On -22.5 dB Line Build Out

Off Off Off Off Off Off Off Off Factory default setting

Off Idle
On Busy

DSX1 in or out

DSX1 framing

3-8

Switch 3 position 1 is used to enable or disable the DSX1 interface. In
the On position, the DSX1 interface is completely disabled and all
three LEDS (TX, RX and LOCK) associated with the DSX1 interface
will not light. When the DSX1 is not used, the DSX1 s hould be disabled
for proper operation of the unit. When a DSX1 input is used, position 1
must be Off.

Switch 3 position 2 determines the type framing. With position 2 Off,
the unit will generate and expect ESF framing to and from the DSX1
interface. With position 2 On, the unit will generate and expect D4
framing. The framing selected on the DSX1 interface does not have to
match the framing on the Network Interface. The T-1 CSU/DSU can be
used to connect an ESF T-1 facility to a PBX which only supports D4.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuration Using the DIP Switches

DSX1 coding

DSX1 line length/build out

Idle or busy character

Switch 3 position 3 selects the type of coding the unit will generate.
Position 3 Off, makes the unit generate B8ZS encoding (clear channel)
and in the On position causes the unit to generate AMI (Alternate
Mark Inversion) encoding. This coding selection, must match the
Customer Equipment connected to the DSX1 interface otherwise
intermittent errors may occur.

Switch 3 positions 4, 5 and 6 control the output power of the T-1 driver
on the DSX1 interface. The driver on the DSX1 interface can support
both short haul (PBXs up to 655 feet) and long haul (other T-1 CSUs up
to 6000 feet) applications. When the DSX1 interface is connected to
customer equipment with short haul interfaces, the settings that
should be used are 133, 266, 399, 533 or 655. When the DSX1 interface
is connected to another T-1 CSU/ DSU up to 6000 feet away, the
settings that should be used are the standard 0, -7.5, -15 or -22.5. The
typical setting is 0 dB/133 feet.

Switch 3 position 7 selects either an Idle or a Busy character for
insertion into the DSX1 output in all DS0s used by the Synchronous
Channel. With position 7 Off, an Idle character is inserted into all the
unused DS0s on the DSX1 interface. With position 7 On, a Busy
character is inserted into all the unused DS0s. Typically the Idle
character is the insertion character. On a fe w o lder PBXs, the Busy
character is required.

06/17/97

C100 and C150 T1/FT1 CSU/DSU

3-9

Configuration Using the DIP Switches

Programming the Synchronous Channel Interface (C100 and C150)

Switch pack 4 is used to program the Synchronous Channel Interface
(CI). The following is a description of the settings:

Table 3-4 Switch pack-4–C100 and C150 cust omer interf ace

12345678 Setting

Off------ reserved
On------ reserved

OffOff-----RS530 / RS422
OffOn-----V.35
OnOff -----RS232

---Off----56000

---On----64000

----Off---Carrier On

----On---Switched Carrier

-----Off--Channel TX Data - Normal

-----On--Channel TX Data - Invert

------Off-Channel Clock - Normal

------On-Channel Clock - Invert

-------OffInternal TX Clock

-------OnExternal TX Clock
Off Off Off Off Off Off Off Off Factory default setting

Synchronous Channel Interface

3-10

Switch pack 4 positions 2 and 3 are used to select the interface on the
Synchronous Channel. With both positions 2 and 3 Off, the interface
selected will be RS422/RS530 and all the interface signals will be on
the DB 25-pin female connector on the rear of the unit.

With position 2 Off and position 3 On, the interface selected will be
CCITT V.35 and all the interface signals will be on the 34-pin female
Winchester connector on the rear of the unit.

With position 2 On and position 3 Off the interface selected will be
RS232 and all the interface signals will be on the DB 25-pin female
connector on the rear of the unit.

The 34 pin and 25-pin interface cables may not be connected at the
same time.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuration Using the DIP Switches

56000 or 64000

Switch pack 4 position 4 determines whether the bandwidth of all DS­0s to the Synchronous Channel is 56000 or 64000 bps. With position 4
Off all DS-0s to the Synchronous Channel are 56000 bps. To calculate
the Channel speed, multiply 56000 times the number of DS0s going to
the Channel. If 4 DS-0s were selected to go to the Synchronous
Channel, the Channel sp e e d would be 224000 bps.

Setting position 4 to On gives 64000 bps to all the selected DS0s going
to the Channel. The same calculation applies when using 64000 bps.
Multiply 64000 times the selected DS-0s to calculate Channel speed.

The following chart lists all the multiples of 56000 and 64000 bps
available with the C100/C150 T-1 CSU/DSU. This option must be set
the same in both units.

Table 3-5 Number of 56000 or 64000 DS0s selected

Numbers of Multiplied Multiplied
DS0's selected by 56000 by 64000

1 56000 64000
2 112000 128000
3 168000 192000
4 224000 256000
5 280000 320000
6 336000 384000
7 392000 448000
8 448000 512000

9 504000 576000
10 560000 640000
11 616000 704000
12 672000 768000
13 728000 832000
14 784000 896000
15 840000 960000
16 896000 1024000
17 952000 1088000
18 1008000 1152000
19 1064000 1216000
20 1120000 1280000
21 1176000 1344000
22 1232000 1408000
23 1288000 1472000
24 1344000 1536000

06/17/97

C100 and C150 T1/FT1 CSU/DSU

3-11

Configuration Using the DIP Switches

Continuous or switched carrier (Receive Line Signal Detect) control

Switch pack 4 position 5 selects Switched or Continuous Carrier
Control. This option works in conjunction with the Request-To-Send
(RTS) control signal, the Carrier Detect (CD or RLSD) control signal
and the 56000/64000 (Switch pack 4 position 4 ) D S-0 bandwi dth
selection.

If the Synchronous Channel DS-0 selection switch is 64000 (no extra
bandwidth available), both th e local and remote units output Carrier is
high to the Synchronous Channel. The Switched/Continuous selectio
is then ignored.

If the Synchronous Channel DS-0 selection is 56000, the difference
between 64000 and 56000 bps of 8000 bps (or multiples) is used to pass
Request-To-Send from the local unit to the remote unit and outputted
by the remote Synchronous Channel as Carrier Detect. In this mode if
Switch pack 4 position 5 is Off (Continuous), a high is transmitted to
the remote unit and Carrier Detect will be high on the remote
Synchronous Channel. If Switch pack 4 position 5 is On (Switched), the
RTS signal at the local Synchronous Channel will be sent across the T-1
line to the Synchronous Channel at remote unit and outputted as
Carrier Detect.

If the speed of the Synchronous Channel is 224000 bps or a lower
multiple of 56000, the Carrier control signal will be aligned with data.
If the speed is above 224000 bps and multiples of 56000, t he Carrier
control signa l w il l still be t ransparent b u t may not be aligned wit h
data.

3-12

NOTE

CAUTION

If RTS is not supporte d by the local te rminal equi pment, Swi tch p ack 4 pos ition 5
should be Off (Continuous) to insure that ones density will be maintained over the T-1
link.

Carrier Detect and Data Set Ready will drop if the Network Interface is Out
Of Frame.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuration Using the DIP Switches

Figure 3-1 is a block diagram which shows the end-to-end interaction

of Request-To-Send, Carrier Detect and the DS-0 selection.

Figure 3-1 Block diagram of Carrier (Receive Line Signal Detect) Control

RTS
CTS

+V (On)

CD

Synchronous Channel Invert Data

Local T-1 CSU/DSU

Switched

Continuous

+V (On)

64000
56000

Remote T-1 CSU/DSU

56000
64000

+V (On)

+V (On)

Continuous

Switched

Switch pack 4 position 6 determines whether data to and from the
Synchronous Channel is normal or inverted. Wi th position 6 Off, data
on the Synchronous Channel passes normally. With position 6 On, both
the transmit and receive data signals at the local Synch ronous Channel
are inverted. By inverting the data, this feature permits certain
protocols such as HDLC, SDLC, etc. to pass over the T-1 facility at
multiples of 64000 bps and meet ones density requirements of the
Network. When using this mode, both the local and remote units must
have this option selected.

CD

CTS
RTS

Synchronous
Channel I nvert
External Transmit
Cloc

Synchronous
Channel Internal Or
External Transmit
Cloc

06/17/97

Switch pack 4 position 7 determines whether External Transmit Clock
from the Synchronous Channel is normal or inverted. With position 6
Off, the External Transmit Clock on the Synchronous Channel passes
normally. With position 7 On, External Transmit Clock from the local
Synchronous Channel is inverted. This feature is used when the round
trip delay of the Transmit Clock exceeds one half bit time (due to cable
length and higher frequencies). This feature should be tried if sporadic
errors are noticed on the Synchronous Channel.

Switch pack 4 position 8 determines whether Internal Clock or
External Transmit Clock is used. With position 8 Off, Internal Transmit
Clock from the T-1 CSU/DSU is provided to the Synchronous
Channel. With position 8 On, External Transmit Clock from the
terminal equipment to the Synchronous Channel. When using this
mode, External Transmit Clock coming from the terminal equipmen

C100 and C150 T1/FT1 CSU/DSU

3-13

Configuration Using the DIP Switches

must be frequency-locked to the Receive Clock provided by the
C100/C150 T-1 CSU/DSU or DI P Switch pack 2 pos itio ns 7 and 8 mus t
be On.

3-14

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuration Using the DIP Switches

Programming the DS-0s and DSX-1s (C100 and C150)

Switch packs 5, 6, and 7 setti ngs are required for bo th t he C100 and
C150.

DS-O assignment

Switch packs 5, 6 and 7 are used to determine whether a DS-0 is give
to the Synchronous Channel or the DSX-1. Ther e a re twenty-four DS-0s
in a T -1 frame an d these DS-0s may be assigned to the Channel or DSX­1 on a contiguous or non-contiguous basis.

If the switch position is Off (rocker arm down towards the front panel),
the DS-0 is not used or assigned to the DSX-1, depending on whether
the unit is a C100 or C 150.

If the switch position is On, the DS-0 is assigned to the Synchronous
Channel. Even when the DSX1 interface is disabled, this selection must
be made in order to determine how many DS-0s go t o the Synchronous
Channel

The programming of the DS-0s must match the DS-0 selection in the
remote unit when they are used on a point-to-point connection or they
must match the DS-0 selection on the Fractional T-1 facility provided
by the T-1 Carrier supplier.

Table 3-6 Switch pack-5: C100/C150 DS0-01 through DS0-08 and C150 DSX1-01 through DSX1-08

12345678 C100 Setting C150 Setting

Off-------DS0-01 not usedDSX1-1
On------- DS0-01 to Channel

Off -----DS0-02 not usedDSX1-2
On ----- DS0-02 to Channel

-Off ----DS0-03 not usedDSX1-3

-On ---- DS0-03 to Channel

--Off ---DS0-04 not usedDSX1-4

- - On - - - DS0-04 to Channel

---Off --DS0-05 not usedDSX1-5

---On -- DS0-05 to Channel

----Off -DS0-06 not usedDSX1-6

----On - DS0-06 to Channel

-----Off DS0-07 not used DSX1-7

-----On DS0-07 to Channel

------OffDS0-08 not used DSX1-8

------On DS0-08 to Channel

Off Off Off Off Off Off Off Off Factory default setting

06/17/97

C100 and C150 T1/FT1 CSU/DSU

3-15

Configuration Using the DIP Switches

Table 3-7 Switch pack-6: C100/C150 DS0-09 through DS0-16 and C150 DSX1-09 through DSX1-16

12345678 C100 Setting C150 Setting

Off-------DS0-09 not usedDSX1-09
On------- DS0-09 to Channel

Off -----DS0-10 not usedDSX1-10
On ----- DS0-10 to Channel

-Off ----DS0-11 not usedDSX1-11

-On ---- DS0-11 to Channel

--Off ---DS0-12 not usedDSX1-12

- - On - - - DS0-12 to Channel

---Off --DS0-13 not usedDSX1-13

---On -- DS0-13 to Channel

----Off -DS0-14 not usedDSX1-14

- - - On - DS0-14 to Channel

- - - - Off DS0-15 not used DSX1-15

-----On DS0-15 to Channel

------OffDS0-16 not used DSX1-16

------On DS0-16 to Channel

Off Off Off Off Off Off Off Off Factory default setting

Table 3-8 Switch pack-7: C100/C150 DS0-17 through DS0-24 and C150 DSX1-17 through DSX1-24

12345678 C100 Setting C150 Setting

Off------ DS0-17 not usedDSX1-17
On------ DS0-17 to Channel

-Off------DS0-18 not usedDSX1-18

-On------ DS0-18 to Channel

--Off-----DS0-19 not usedDSX1-19

--On----- DS0-19 to Channel

---Off----DS0-20 not usedDSX1-20

---On---- DS0-20 to Channel

----Off---DS0-21 not usedDSX1-21

----On--- DS0-21 to Channel

-----Off--DS0-22 not usedDSX1-22

-----On-- DS0-22 to Channel

------Off-DS0-23 not used DSX1-23

------On- DS0-23 to Channel

-------OffDS0-24 not used DSX1-24

-------On DS0-24 to Channel
Off Off Off Off Off Off Off Off Factory default setting

3-16

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Chapter

4

LED Indicators and Diagnostics

Overview

The T-1 CSU/DSU is equipped with twenty-one LEDS, seve
loopbacks, a pattern generator/checker and two sets of monitor jacks
to help install and diagnose T-1 problems. The following sections
describe these items:

Figure 4-1 C100 Front Panel LEDs

Figure 4-2 C150 front panel LEDs

6/15/99

Verilink C100 and C150 T1/FT1 CSU/DSU

4-1

LED Indicators and Diagnostics

Channel LED Indicators

On the C150, the first three Customer Interface LEDs are used for
DSX1. The C100 instead has three other Customer Interface LEDs: RTS,
CTS, and DSR, which are not found on the C150.

C150 only

CI Chan TX DATA

CI DSX1 TX DAT

The CI DSX1 TX DATA LED is lit whenever CI DSX1 TX DATA is
spacing. The color of this LED is green.

CI DSX1 RX DAT

The CI DSX1 RX DATA LED is lit whenever CI DSX1 RX DATA is
spacing. The color of this LED is green.

CI DSX1 LOCK

The CI DSX1 LOCK LED is green when the T-1 CSU/DSU is frame
locked to the T-1 stream coming from the customer equipment. This
LED will be red when no framing is detected from the customer
equipment. This LED will be not be lit when the CI DSX1 channel is
disabled with the DIP switches. The color of this LED is red/green.

The CI Channel TX DA TA LED is lit whenever CI Channel TX D ATA to
the customer equipment is spacing. The color of this LED is green.

CI Chan RX DATA

CI Chan RTS

CI Chan CTS

4-2

The CI Channel RX DATA LED is lit whenever CI Channel RX DATA
from the customer equipment is spacing. The color of this LED is
green.

The CI Channel RTS (Request to Send) LED is lit whenever CI Channel
RTS from the customer equipment is spacing. The color of this LED is
green.

The CI Channel CTS (Clear to Send) LED is lit whenever CI Channel
CTS to the customer equipment is spacing. The color of this LED is
green.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

LED Indicators and Diagnostics

CI Chan DSR

CI Chan CD

CI Chan DTR

The CI Channel DSR (Data Set Ready) LED is lit whenever CI Channel
DSR to the customer equipment is spacing. The color of this LED is
green.

The CI Channel CD (Carrier Detect) LED is lit whenever pin 8 on the
CI Channel interfaces to the customer equipment is spacing. The colo
of this LED is green.

The CI Channel DTR (Data Terminal Ready) LED is lit whenever CI
Channel DTR from the customer equipment is spacing. The color of
this LED is green.

6/15/99

C100 and C150 T1/FT1 CSU/DSU

4-3

LED Indicators and Diagnostics

Alarm and Network Interface LEDs

BPV Alarm

Density Alarm

Blue Alarm

Yellow Alarm

The BPV (Bi-Polar Violation) ALARM LED is lit when a bi-polar
violation is detected in the received T-1 data from Network. The BPV
ALARM LED stays on approximately 500 milliseconds and then goes
out. The color of the BPV ALARM LED is red.

The DENSITY ALARM is lit when a Ones Density Alarm is detected in
the received T-1 stream. A Ones Density Alarm occurs when there are
an insufficient number of one bits or more than 15 consecutive zero
bits. The DENSITY ALARM LED stays on approximately 500
milliseconds and then goes out. The color of the DENSITY ALARM
LED is red.

(Appears only on the C150.) This LED is lit when BLUE ALARM
(unframed all 1's) is received from Network. The color of the BLUE
ALARM LED is red.

The YELLOW ALARM LED is lit when either a Yellow Alarm (8 1's
followed by 8 0's) is received in the 4K Data Link message from the
Network in ESF or a Yellow Alarm (bit 2 spacing in every DS0) is
received from the Network in D4 Framing. A Y ellow Alarm f rom the
Network usually means the Network is not receiving framing. Th
color of the YELLOW ALARM LED is red.

NI TX DAT

NI RX Data

NI Lock

4-4

This LED is lit whenever NI TX D ATA is spacing. The color of this LED
is green.

This LED is lit whenever NI RX DATA is spacing. The color of this LED
is green.

The NI LOCK LED is lit g reen when the T-1 CSU/DSU is frame locked
to the Network. When the unit is Out of Frame or not frame-locked,
this LED will be red. The color of this LED is red/green.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Loopbacks and diagnostics LEDs

NIN

Loopbacks are labeled Local and Remote on the C100. On the C150
they are labeled LCL LOOPS and REM LOOPS. The C150 has DSX
loopback LEDs in addition to the C100 loopback LEDs. See the front
panel illustrations below.

LED Indicators and Diagnostics

Local Network Interface (NI) Loopback

The Local Network Interface ( NI) LOOPBACK LED is on so lid when it
is selected by the Select push-button. When the Local NI LOOPBACK
LED blinks at a fast rate, the T-1 CSU/DSU has the Network Interface
looped back onto itself (see circled loop in Figure 4-3a.) and was
activated locally. When the Local NI Loopback LED blinks at a slow
rate the T-1 CSU/DSU has the Network Interface looped back to the
Network (see circled loop i Figure 4-3b.) and was activated by the
carrier provider or the remote unit. The color of this LED is red.

Illustrations of examples of the C150 follow those of the C100. These
example show PBXs connected by a DSX-1 line.

C100 examples

Figure 4-3 C100 T-1 CSU/DSU in Local NI Loopback

Figure 4-2a:

Local T-1 CSU/DSU

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

Bridge

Router

Channel

NETWORK

Remote T-1 CSU/D SU

T-1 CSU

Pattern
Generator

Pattern
Checker

Channel

Bridge

Router

Figure 4-2b. T-1 CSU/DSU in Local NI Loopback (CSU Loopback from the Network):

Local T-1 CSU/DSU

Channel

Router

Bridge

6/15/99

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

NETWORK

C100 and C150 T1/FT1 CSU/DSU

I

Remote T-1 CSU/D SU

T-1 CSU

Pattern
Generator

Pattern
Checker

Channel

Bridge

Router

4-5

LED Indicators and Diagnostics

N

N

C150 examples

Figure 4-4 C150 T-1 CSU/DSU in Local NI Loopback

Local T-1 CSU/DSU

DSX1

PBX

Channel

Bridge

Router Router

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

NETWORK

I

Remote T-1 CSU/DSU

T-1 CSU

Pattern
Generator

Pattern
Checker

Channel

DSX1

Figure 4-5 C150 T-1 CSU/DSU in Local NI Loopback

Local T-1 CSU/DSU

DSX1

PBX

Channel

Bridge

Router Router

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

NETWORK

I

Remote T-1 CSU/DSU

T-1 CSU

Pattern
Generator

Pattern
Checker

DSX1

Channel

PBX

Bridge

PBX

Bridge

Local DSX1 channel loopback

The Local DSX1 Channel LOOPBACK LED is on solid when it is
selected by the Select push-button. When the Local DSX1 Channel
LOOPBACK LED blinks at a fast rate, the T-1 CSU/DSU has the DSX1
(Customer T-1 interface) looped back onto itself (see circled loop in
Figure.) and was activated locally. When the Local DSX1 Channel
Loopback LED blinks at a slow rate the T-1 CSU/DSU has the DSX1
(Customer T-1 interface) looped back onto itself but was activated by
the carrier provider or the r emote unit sending a V.54 command. When
this loopback is activated, data continues to be transmitted to the
customer equipment. The color of this LED is red.

4-6

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Figure 4-6 C150 DSX-1 CSU/DSU in Local Channel Loopback

N

N

N

N

LED Indicators and Diagnostics

Local T-1 CSU/DSU

DSX1

PBX

Channel

Bridge

Router Router

Local Synchronous Channel Loopback

T-1 CSU

NI

I

NETWORK

Pattern
Generator

Pattern
Checker

The Local Synchronous Channel LOOPBACK LED is on solid when it
is selected by the Select push-button. When the Local Synchronous

Remote T-1 CSU/DSU

T-1 CSU

Pattern
Generator

Pattern
Checker

DSX1

Channel

Channel LOOPBACK LED blinks at a fast rate, the T-1 CSU/DSU has
the Channel interface in a bidirectional loopback (see circled loop in

Figure 4-7.) and was activated locally. When the Local Synchronous

Channel Loopback LED blinks at a slow rate th e T-1 CSU/DSU has the
Channel in a bidirection al loopback but was activated by the carrier
provider or the remote unit sending a V.54 command. The color of this
LED is red.

Figure 4-7 C100 T-1 CSU/DSU in Local CI Channel Loopback

PBX

Bridge

Local T-1 CSU/DSU

Bridge

Router

Channel

T-1 CSU

Pattern
Generator

Pattern
Checker

I

NETWORK

Figure 4-8 C150 T-1 CSU/DSU in Local CI Channel Loopback

Local T-1 CSU/DSU

PB

Bridge

Router

Channel

T-1 CSUDSX1

Pattern
Generator

Pattern
Checker

NI

NETWORK

Remote T-1 CSU/DSU

I

I

T-1 CSU

Pattern
Generator

Pattern
Checker

Remote T-1 CSU/DSU

T-1 CSU DSX1

Pattern
Generator

Pattern
Checker

Channel

Channel

Bridge

Router

PB

Bridge

Router

6/15/99

C100 and C150 T1/FT1 CSU/DSU

4-7

LED Indicators and Diagnostics

N

N

Local P ayload Loopback

C100 and C150

The C150 Local Payload LOOPBACK LED is on solid when it is
selected by the Select push-button. When the Local Payload
LOOPBACK LED blinks at a fast rate, the T-1 CSU/DSU is in a
Payload Loopback and was activated locally. (See circled loops in the
illustrat i o n s below.)

When the Local Payload Loopback LED blinks at a slow rate the T-1
CSU/DSU is in a Payload loopback activated by the T1 carrie
provider or the remote end.

This loopback can be used when in both D4 and ESF Framing.
The color of this LE D is red.

Figure 4-9 C100T -1 CSU/DSU in Local Payload Loopback

Local T-1 CSU/DSU

Channel

Bridge

Router Router

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

NETWORK

I

Remote T-1 CSU/DSU

T-1 CSU

Pattern
Generator

Pattern
Checker

Channel

Bridge

Figure 4-10 C150 T-1 CSU/DSU in Local Payload Loopback

Local T-1 CSU/DSU

DSX1

PB

Channel

Bridge

Router

Remote Network Interface (NI) Loopback

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

NETWORK

The Remote Network Interface (NI) LOOPBACK LED is on solid whe
it is selected by the Select push-button. When the Remote NI
LOOPBACK LED blinks at a fast rate, the T-1 CSU/DSU has sent a
LOOP UP (Remote NI loop) command to the T-1 CSU/DSU (see
circled loop i Figure 4-11 for the C100) at the other end of the
Network. Since this loopback latches the unit at the other end, care

Remote T-1 CSU/D SU

I

T-1 CSU

Pattern
Generator

Pattern
Checker

DSX1

Channel

PB

Bridge

Router

4-8

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

must be taken to ensure that a LOOP DOWN command is sent

N

N

N

(pushing th e Start pu sh-bu tto n agai n) whe n fini shed test ing. The colo r
of this LED is red.

Figure 4-11 Remote C100T-1 CSU/DSU in Remote Network Interface Loopback

LED Indicators and Diagnostics

Remote T-1 CSU/DS

T-1 CSU

Pattern
Generator

Pattern
Checker

Channel

Router

Router

Bridge

Local T-1 CSU/DSU

T-1 CSUChannel

Pattern
Generator

Pattern
Checker

NI

NETWORK

I

Figure 4-12 Remote C150T-1 CSU/DSU in Remote Network Interface Loopback

Local T-1 CSU/DSU

DSX1

PBX

Channel

Router Router

Bridge

Remote DSX1 channel loopback

T-1 CSU

NI

I

NETWORK

Pattern
Generator

Pattern
Checker

The Remote DSX1 Channel LOOPBACK LED is on solid when it is
selected by the Select push-button. When the Remote DSX1 Channel

Remote T-1 CSU/DSU

T-1 CSU

Pattern
Generator

Pattern
Checker

Channel

DSX1

LED blinks at a fast rate, the T-1 CSU/DSU has sent a V.54 LOOP ON
command to the DSX1 Channel interface (see circled loop in the
Figure) at the other end. Since this loopback latches the CI DSX1
interface in the unit at the other end, care must be taken to ensure that
a V.54 LOOP OFF command is sent (pushing the Start push-button
again) when finished testing. The color of this LED is red.

Bridge

PBX

Bridge

Figure 4-13 Remote C150 CSU/DSU in remote DSX-1 channel loopback

Local T-1 CSU/DSU

DSX1

PBX

Channel

Router

Bridge

6/15/99

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

I

NETWORK

C100 and C150 T1/FT1 CSU/DSU

Remote T-1 CSU/DSU

T-1 CSU

Pattern
Generator

Pattern
Checker

Channel

DSX1

PBX

Router

Bridge

4-9

LED Indicators and Diagnostics

N

N

Remote Synchronous Channel Loopback

The Remote Synchronous Channel LOOPBACK LED is on solid when
it is selected by the Select push-button. When the Remote Synchronous
Channel LED blinks at a fast rate, the T-1 CSU/DSU has sent a V.54
LOOP ON command to the Synchronous Channel interface (see circled
loop in Figure 4-14 for C100.) at the other end. Since this loopback
latches the Synchronous Channel interface in the unit at the other end,
care must be taken to ensure that a V.54 LOOP OFF command is sent
(pushing th e Start pu sh-bu tto n agai n) whe n fini shed test ing. The colo r
of this LED is red.

Figure 4-14 Remote C100 T-1 CSU/DSU in Remote Channel Loopback

Local T-1 CSU/DSU

Channel

Router Router

Bridge

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

NETWORK

I

Figure 4-15 Remote C150 T-1 CSU/DSU in Remote Channel Loopback

Local T-1 CSU/DSU

T-1 CSUDSX1

PBX

Pattern

Channel

Bridge

Router Router

Generator

Pattern
Checker

NI

NETWORK

I

Remote T-1 CSU/DS

T-1 CSU

Pattern
Generator

Pattern
Checker

Remote T-1 CSU/DSU

T-1 CSU DSX1

Pattern
Generator

Pattern
Checker

Channel

Channel

Bridge

PBX

Bridge

Test Pattern

C100

The Test Pattern LED is solid red when it is selected by the Select push­button. Pushing the Start push-button when this LED is lit, will cause a
2047 test pattern to be sent and the Test Pattern LED to blink red at a
fast rate. The 2047 pattern will always be sent from the T-1 CSU/DS
to the Network (see circled a rea in example i Figure 4-16 for the C100)
unless a Local CI Channel Loopback (see circled area in example in

Figure 4-17 for the C100) has been activated.

The 2047 pattern checker will look for a 2047 pattern from the
Network, and if detected, will light the Test Pattern LED green. If a
Local CI Channel Loopback has been activated, the 2047 test pattern
will be sent to the Channel and the 2047 pattern checker will look fo
the pattern from the Channel. The Test Pattern LED is a dual colo
red/green LED.

4-10

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

LED Indicators and Diagnostics

N

N

N

Figure 4-16 Local C100 sending pattern to network with remote T-1 CSU in NI loopback

Remote T-1 CSU/DS

T-1 CSU

Pattern
Generator

Pattern
Checker

Bridge

Router

Local T-1 CSU/DSU

Channel

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

NETWORK

I

Figure 4-17 Local C100 CSU/DSU sending 2047 pattern to channel in local loopback

Remote T-1 CSU/DS

T-1 CSU

Pattern
Generator

Pattern
Checker

Bridge

Router

Local T-1 CSU/DSU

Channel

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

NETWORK

I

C150 Test Pattern

The Test Pattern LED is solid red when it is selected by the Select push­button. Pushing the Start push-button when this LED is lit, will cause a
2047 test pattern to be sent and the Test Pattern LED to blink red at a
fast rate. The 2047 pattern will always be sent from the T-1 CSU/DS
to the Network (see circled area in example in Figure 6.8.) unless a
Local CI DSX1 or a Local CI Channel Loopback (see circled area i
example in the Figure) has been selected. The 2047 pattern checker will
look for a 2047 pattern from the Network, and if detected, will light the
Test Pattern LED green. If a Local CI DSX1 or Channel Loopback has
been activated, the 2047 test pattern will be sent to the DSX1 or
Channel and the 2047 pattern checker will look for the pattern from
either the DSX1 or Channel depending on the selected loopback. The
Test Pattern LED is a dual color red/green LED.

Channel

Channel

Bridge

Router

Bridge

Router

Figure 4-18 Local C150 sending pattern to network with remote T-1 CSU in NI loopback

Local T-1 CSU/DSU

DSX1

PB

Channel

Router

Bridge

6/15/99

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

I

NETWORK

C100 and C150 T1/FT1 CSU/DSU

Remote T-1 CSU/DSU

T-1 CSU

Pattern
Generator

Pattern
Checker

Channel

DSX1

PB

Router

Bridge

4-11

LED Indicators and Diagnostics

N

Figure 4-19 Local T-1 C150 CSU/DSU Sending 2047 Pattern to Channel in Local Loopback

Local T-1 CSU/DSU

DSX1

PB

Channel

Router Router

Bridge

Select and Start Push-button

T-1 CSU

Pattern
Generator

Pattern
Checker

NI

NETWORK

I

Separate subsections are given for the C100 and C150 because the C150
provides a DSX-1 line with a LED indicator. However push-butto n for

Remote T-1 CSU/DSU

T-1 CSU

Pattern
Generator

Pattern
Checker

Channel

DSX1

both units operate nearly identically.

C100

The eight Loopback/Pattern LEDS work in conjunction with the Select
and Start push-button. During normal operation all of the eight LEDs
are off. To activate the switches, hold the Select push-button in for 3
seconds (this helps prevent unauthorized tampering).

Pushing the Select push-button once will light the Local NI Loopback
LED. Pushing the Select push-button again, will turn off the Local NI
Loopback LED and light the Local Channel Loopback LED. Each time
the Select push-button is depressed, the LED that is on will go out and
the LED to t he r i gh t w il l g o on select i ng a n e w function . Whe n t h e Test
Pattern LED is on, pushing the Select push-button will cause the Test
Pattern LED to go out and the Local NI Loopback LED to go on. Push
the Select push-button until the desired function is lit. Pushing the
Start push-button will cause that function to b e activated and that LED
will blink at a fast rate (approximately 200 milliseconds). Pushing the
Start push-button again will cause the function to be deactivated.

PB

Bridge

Only one loopback at a time may be selected. The last loop command
received will override all other loopbacks. An existing loopback must
be turned off before a new loopback may be turned on.

When neither switch is depressed for two minutes, both switches will
be deactivated. To re-activate the Select switch will have to be held i
for 3 seconds again.

Example: Setting a Remote Channel Loopback.
Hold the Select push-button until the Local NI Loopback indicato

lights (approximately 3 seconds). Push the Select push-button 4 times
to advance to the Remote Channel Loopback LED which should be lit.
Now push the Start push-button and the Remote Channel Loopback

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LED Indicators and Diagnostics

LED should blink at a fast rate. This means a V.54 loop On command
has been sent to the channel in the remote unit. The remote unit’s Local
Channel Loopback LED should be blinking at a slow rate and the
remote unit should be in a loopback. Pushing the Start push-button
again will send a V.54 loop Off command to the remote unit removing
the loop. All loopback LEDs at the remote unit will go off and the local
unit’s Remote Channel Loopback LED will stop blinking fast and be
on solid.

C150 Select and Start Push-button

The eight Loopback/Pattern LEDS work in conjunction with the Select
and Start push-button. During normal operation all of the eight LEDs
are off. To activate the switches, hold the Select push-button in for 3
seconds (this helps prevent unauthorized tampering). Pushing the
Select push-button once will light the Local NI Loopback LED.
Pushing the Select push-button again, will turn off the Local NI
Loopback LED and light the Local DSX1 Loopback LED. Each time the
Select push-button is depressed, the LED that is on will go out and the
LED to the right will go on selecting a new function. When the Test
Pattern LED is on, pushing the Select push-button will cause the Test
Pattern LED to go out and the Local NI Loopback LED to go on. Push
the Select push-button until the desired function is lit. Pushing the
Start push-button will cause that function to b e activated and that LED
will blink at a fast rate (approximately 200 milliseconds). Pushing the
Start push-button again will cause the function to be deactivated.

Only one loopback at a time may be selected. The last loop command
received will override all other loopbacks. An existing loopback must
be turned off before a new loopback may be turned on.

When neither switch is depressed for two minutes, both switches will
be deactivated. To re-activate the Select switch will have to be held i
for 3 seconds again.

Example: Setting a Remote DSX1 Channel Interface Loopback.
Hold the Select push-button until the Local NI Loopback indicato

lights (approximately 3 seconds). Push the Select push-button 5 times
to advance to the Remote DSX1 Loopback LED which should be lit.
Now push the Start push-button and the Remote DSX1 Loopback LED
should blink at a fast rate. This means a V.54 loop On command has
been sent to the DSX1 channel in the remote unit. The remote unit’s
Local DSX1 Loopback LED should be blinking at a slow rate and the
remote unit should be in a DSX1 loopback. Pushing the Start push­button again will send a V.54 loop Off command to the remote unit
removing the loop. All loopback LEDs at the remote unit will go off
and the local unit’s Remote DSX1 Loopback LED will stop blinking
fast and be on solid.

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C100 and C150 T1/FT1 CSU/DSU

4-13

LED Indicators and Diagnostics

C

Customer Interface DSX1 monitor jack

The CI DSX1 Monitor Jack located on left side of unit permits an
external T-1 tester to monitor either or both the TX and RX pairs
connecting the DSX1 port to the Customer Interface equipment (see
the Figure). When using these jacks the TX and RX pairs are isolated
by a 500 ohm resistors to protect the T-1 signals. These jacks are for
monitor only.

Figure 4-20 C150 T-1 CSU/DSU wiring diagram of DSX1 Monitor Jack

I T-1 CSU/DSU
Customer
Interface
Equipment

To

From

TX RX

500 Ohms

4-14

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Chapter

5

Overview

Using the Console Port

The console port is the menu-driven ASCII terminal user interface for
the C100 an d C150.

This chapter provides general informa tion on using the console port. It
also describes using the Utilities menu. Subsequent chapters describe
using the major menus and functions of the console port:

■

Chapter 6,

■ Chapter 7,

■ Chapter 8,

The T-1 CSU/DSU console port supports VT-terminal emulation with
either a direct or modem dial-up connection. The speed of the console
port is 9600 bps. Up to eight units can be daisy-chained together and
controlled by a single console or a single modem. If all eight units are
connected together, the unit address switches on each unit, must be
programmed for a different address as described in Chapte r 3,

Configuration Using the DIP Switches

address 1 comes up with its console on and all other units are turned
off. Each unit can then be polled individually by typing the letter “u”
followed by a terminal address (1 through 8).

Configuring the C100/C150 Using the Console Port
Configuring the Console Port for SNMP
Performance Monitoring with the Console Port

. On power up, the unit with

Cabling a Terminal to the Console Port

6/15/99

Each unit comes with a six conductor straight through RJ11 modular
cable and an RJ11 modular to DB25 pin male hood as desc ribed in the
Cable section of this manual. One end of the RJ11 cable is inserted into
the connector on the rear of the unit labelled CONSOLE IN and the
other end into the modular connector in the hood. Plug the hood into
the DB25 pin connector on the VT100 terminal.

If more than one unit is to be controlled by the ASCII console, use the
RJ11 cable provided with the second unit to daisy-chain it to the first
unit. Plug one end of the second unit’s cable into the modular
connector on the rear of the first unit labelled CONSOLE OUT. Insert
the other end of the RJ11 into the modular connector labelled
CONSOLE IN on the rear of the second unit. The hood provided with

Verilink C100 and C150 T1/FT1 CSU/DSU

5-1

Using the Console Port

the second unit is not used and can be stored in the shipping carton.
Connect additional units in a similar fashion, using the RJ11 cable
provided with them and storing the hoods.

Cabling a Modem to the Console Port

To cable a modem to the Console Port, an optional hood is required.
The hood can be supplied by Verilink or can be provided by the user.
The hood is a modular RJ11 to 25 pin male Part Number CH2R0001
and a wiring diagram can be found in Appendix C,

Cables

. The same cable pr ovided with the unit is used wit h this hood to

Interfaces and

connect t h e Console Port to the modem. If more than on e unit is to b e
controlled by the modem, use the RJ11 cable provide d with the sec ond
unit to daisy-chain it to the first unit. Plug one end of the second unit’s
cable into the modular connector on the rear of the first unit labeled
CONSOLE OUT. Insert the other end of the RJ11 into the modular
connect o r la beled CONSOLE IN on the rear of the second uni t . Th e
hood provided with the second unit is not used and can be stored i
the shipping carton. Connect additional units in a similar fashion,
using the RJ11 cable provided with them.

5-2

Verilink C100 and C150 T1/FT1 CSU/DSU

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Using th e console port

The console is also easy to use because the screen hierarchy is very flat.
In most cases there is only one screen displayed from the Main Menu.
The screen hierarchy is shown in the following illustration.

Figure 5-1 Screen hierarchy T-1 CSU/DSU

Using the Console Port

Main Menu

Configuration

Setting up the terminal

Local Registers

Register

Diagnostics
& Statistics

Service

Utilities

The console port and the ASCII terminal or modem must be
programmed for the same speed to use the console feature. The
settings of the console port on the T-1 CSU/DSU is 9600 bps, 8 data
bits, 1 stop bit and no parity.

After the T-1 CSU/DSU and the VT100 terminal connections have
been cabled, powered up and communicating, the Main Menu show
in Figure 5-2 is be displayed.

When using a single console for multiple units, each unit must be
selected by typing U or u followed by a unit address number of 1
through 8.

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C100 and C150 T1/FT1 CSU/DSU

5-3

Using the Console Port

Console menu/command keys

The console is user-friendly and very simple to operate since only a
few keys are needed. Except for the two control keys, all keys are
descri b ed on the b o ttom line s of t he screens where they are used.
description of these keys follows:

SPACE BAR Pressing the space bar on all screens advances the

blinking cursor to the next field.

Letter B/b Pressing the letter B or b (case-insensitive) moves

the blinking cursor to the previous field.

ENTER Typing Enter causes 1 of 2 things to occur

depending on the screen displayed. On the Mai
Menu it selects the next screen to display. On the
other screens ENTER displays the next choice in
the field.

BACKSP ACE Pressing the Backspace key on a field displays the

previous choice in the field.

ESC Pressing the Escape key on all screens displays

the Main Menu or exits Utility fields.

R/r Resest. Typing the letter R or r (case-insensitive)

on the Diagnostics & Statistics screen (Figure 8-5,

Diagnostics and Statistics Screen) resets the

following counters on the sc reen:

• NI Alarms: CRC-6, BVP, Blue Alarm

•All CI Alarms

• All Test counters.
The remaining counter s are Telco controlled

registers and cannot be reset by the end-user.

Control D Holding the Control key down and then pressing

the letter D or d disconnects the modem.

Control R Holding the Control key down and then pressing

the letter R or r refreshes the screen.

5-4

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Using the Console Port

Main Menu

Figure 5-2 Main Menu with Console Deactivated

29 APR 1997 VERILINK CORPORATION 14:46:48
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Main Menu
Configuration
Local Registers
Diagnostics & Statistics
Service
Utilities
Password:
Software: REV 3.01
CONSOLE DEACTIVATED
CURSOR FORWARD = [SPACE] SELECT = [ENTER] CURSOR BACK = [B]

Activating and deactivating the console

The Main Menu is the first sc ree n dis p l a yed (see Figure 5-2).

When first entering the Main Menu, the console is deactivated. *** TO

ACTIVATE THE CONSOLE, A PASSWORD MUST BE ENTERED
***.

To deactivate the console, advance the cursor with the SPACE bar to
the Deactivate Console and press ENTER. The console is deactivated
and the password is required to activate the console again.

The blink ing cursor is positioned on the Configuration selection.
Advance the blinking cursor to the Password selection by pressing the
SPACE key until the cursor is positioned on the password select ion. To
enter the password mode press ENTER. The blinking cursor moves to
the right of the word Password and wait for the password to be typed.

The default password when shipped from the factory is just the
ENTER key.

Pressing Enter activates the console, as shown in Figure 5-3. (the
password can be changed later, in the Utilities section). With the
console activated, the console works in conjunction with DIP switch 1.
If DIP Switch 1 position 6 is OFF, the console is able to view only all
screens and operate the diagnostics on the Diagnostics & Statistics
screen. If DIP switch 1 position 6 is ON, the console is ab le to configu re
the T-1 CSU/DSU and the DIP switches is ignored except for Unit
Address which can only be changed by DIP switches.

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C100 and C150 T1/FT1 CSU/DSU

5-5

Using the Console Port

Navigating the menu tree

To display any of the five screens listed in the Main Menu, advance the
blinking cursor to the left of the selection wanted and p res s the ENTE
key.

Figure 5-3 Main Menu with Console Activated

29 APR 1997 VERILINK CORPORATION 15:17:55
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Main Menu
Configuration
Local Registers
Diagnostics & Statistics
Service
Utilities
Deactivate Console
Software: REV 3.01
CONSOLE ACTIVATED
CURSOR FORWARD = [SPACE] SELECT = [ENTER] CURSOR BACK = [B]

Service

For Tech nical Support notices, see page 2 of this manual (after the
cover).

Figure 5-4 Service screen (Not currentl y imple mented)

29 APR 1997 VERILINK CORPORATION 14:52:39
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Service

MAIN MENU = [ESC]

5-6

To return to the Main Menu, press ESCAPE.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Utilities

Figure 5-5 Utilities screen

29 APR 1997 VERILINK CORPORATION 14:53:38
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Utilities

Set Time
Set Date
Rename Header
Set Password:

Using the Console Port

The Utilities menu provides menus and commands to set the time and
date, rename the header, and set the password.

Set Time

CURSOR FORWARD = [SPACE] CURSOR BACK = [B]
SELECT = [ENTER] SELECT BACK = [BACKSPACE] MAIN MENU = [ESC]

When the Utilities screen is entered, the blinking cursor is located to
the left of the Set Time selection, As with all the other screens, pressing
the SPACE bar advances the cursor and pressing “b” moves the cursor
in the opposite direction. And again, these selections can only be
changed when the console is enabled and the password activated.

A description of all the fields that can be changed follows:

Pressing the ENTER key when on Set Time selection moves the
blinking cursor to the low order hour digit at the top right of the
screen. To change the hour press ENTER until the desired hour is
displayed. The BACKSPACE key also changes the hour but it causes it
to go backwards instead of forward to save time. To advance the
blinking cursor to the low order minutes selection, press the SPACE
bar. To change the minutes, use the ENTER and BACKSPACE keys
until the desired minutes are displayed. To change the seconds,
advance the cursor with the SPACE bar and use ENTER and
BACKSPACE as in the previous steps. Pressing the SPACE bar agai
moves the blinking cursor to the Set Time position.

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C100 and C150 T1/FT1 CSU/DSU

5-7

Using the Console Port

Set Date

Rename Header

Pressing the ENTER key when on Set Date selection moves the
blinking cursor to the low order day digit at the top left of the screen.
To change the day press ENTER until the desired day is displayed. The
BACKSPACE key also changes the day but it causes it to go backwards
instead of forward. To advance the blinking cursor to the right hand
letter of the month selection, press the SPACE bar. To change the
month, use the ENTER and BACKSPACE keys until the desired month
is displayed. To change the century and year, repeat previous steps.
Pressing the SPACE bar again moves the blinking cursor back to the
Set Date position.

Pressing the ENTER key when on the Rename Header moves the
blinking cursor to the middle of the header field and erases the current
header. Any new header can be typed in at this point. The heade
characters allowable are the alphabet (both upper and lower case) and
the numbers 0 through 9. After the new header is typed in, press
ENTER to save the header and return to the blinking cursor to the left
of Rename Header selection. Pressing ESCAPE while typing in the
new header returns to the Main Menu leave the current header intact.
Once the ENTER is press while typing in a new header, the current
header is permanently erased and has to be retyped again.

Set Passwor d

Pressing ENTER while on the Set Password selection moves the cursor
to the beginning of the password field to the right of Set Password. A
new password can be entered at this point. The password characters
allowable are the alphabet (both upper and lower case) and the
numbers 0 through 9. After typing in the new password press the
ENTER key. The console requests Password Verification. Type in the
exact password again and the new password is saved. If the second
password does not match the first password, the message Invalid
Verification is printed on the screen and the blinking cursor is r eturned
to the left of Set Password. Pressing ESCAPE while typing in a new
passw ord or verifyi ng a password returns to the Main Menu and
leaves the old password intact. Pressing SPACE bar when on the Set
Password selection advances the cursor back to Set Time.

To return to the Main Menu, press ESCAPE.

5-8

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Chapter

6

Configuring the C100/C150 Using the Console Port

This chapter describes using the Configuration menu of the console
port. Configuring can also be done via the DIP switches. See Chapter

Configuration Using the DIP Switches

3,

For general information on the console port, see Chapter 5,

Console Port

Navigating the menu tree

Figure 6-1 Main Menu with Console Activated

29 APR 1997 VERILINK CORPORATION 15:17:55
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Main Menu
Configuration
Local Registers
Diagnostics & Statistics
Service
Utilities
Deactivate Console
Software: REV 3.01
CONSOLE ACTIVATED
CURSOR FORWARD = [SPACE] SELECT = [ENTER] CURSOR BACK = [B]

To display any of the five screens listed in the Main Menu, advance the
blinking cursor to the left of the selection wanted and p res s the ENTE
key.

.

.

Using the

6/15/99

Verilink C100 and C150 T1/FT1 CSU/DSU

6-1

Configuring the C10 0/C150 Using the Console Port

Configuration menu

The following illustration is a display of the initial Console Interface
menu.

Figure 6-2 Configuration–Console menu

29 APR 1997 VERILINK CORPORATION 14:31:45
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Configuration - Console
IP Address: 000.000.000.000
NETWORK INTERFACE CUSTOMER INTERFACES
Framing: ESF DSX1: Enable SYNC Channel
Coding: B8ZS Framing: ESF Interface: V.35
Density: Disable Coding: B8ZS Bandwidth: 56000
Mode: 62411 Line Length: 133 ft/0 dB Carrier: On
Line Build Out: 0 dB Fill Char: Idle Invert Data Disable
Timing: Network Invert Clk: Disable
Remote Loop: Enable Transmit Clk: Internal

DS01 DSX1 DS05 DSX1 DS09 DSX1 DS13 DSX1 DS17 DSX1 DS21 DSX1
DS02 DSX1 DS06 DSX1 DS10 DSX1 DS14 DSX1 DS18 DSX1 DS22 DSX1
DS03 DSX1 DS07 DSX1 DS11 DSX1 DS15 DSX1 DS19 DSX1 DS23 DSX1
DS04 DSX1 DS08 DSX1 DS12 DSX1 DS16 DSX1 DS20 DSX1 DS24 DSX1
CURSOR FORWARD = [SPACE] CURSOR BACK = [B]
SELECT = [ENTER] MAIN MENU = [ESC]

Overview of using the menu

When you enter the Configuration screen, the blinking cursor is
positioned to the left of the Network Interface Framing selection. As in
the Main Menu, pressing the SPACE bar advances the cursor to the
next selection. If the selection wanted is passed accidentally, pressing
the B-key moves the cursor in the reverse direction.

As mentio ned previou sly, to change any of the s election s on this
screen, DIP switch 1 position 6 must be set to the console selection to
enable the console function. (See Table 3-1, C 100/C150 Switch pack

1—Unit Configuration.)

If the console function is enabled, the word Console i s displayed to the
right of the word Configuration at the top of the screen, and the
console controls the configuration of the unit. If DIP Switches is Off
(Switch pack 1, switc h 6), the wor Switches is displayed to the right
of the word Configuration at the top of the screen display, and the
Console is not able to change the settings of the DIP switches.

6-2

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuring the C100/C150 Using the Console Port

The Unit Address displays the settings of the Unit Address
programmed in the DIP switches. The Unit Address cannot be
changed from the console.

The changes entered on the Configuration screen occur as the field is
changed. A description of all the fields that can be changed by the
console when it is enabled follows:

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C100 and C150 T1/FT1 CSU/DSU

6-3

Configuring the C10 0/C150 Using the Console Port

Programming the Network Interface

NI framing

NI coding

Density

This selection determines the type framing. Wi th ESF selected, the unit
generates and expects ESF framing to and from the Network Interface.
Pressing Enter displays D4 and the unit generates and expects D4
framing. The framing selected in the unit must match the framing
option provided by the T-1 Carrier.

This field selects the type of coding the unit generates. When B8ZS is
displayed, the unit generates B8ZS encoding. Pressing ENTER sets the
line coding to AMI encoding. This coding selection must match the
provisioning provided by the T-1 Carrier supplier or remote end,
otherwise intermittent errors can occur.

The Density selection determines whether the unit enforces ones
density to the Network or operate in the Clear Channel mode. When
the word Enabled is displayed, the unit enforces density. This means
that data from the Channel and/or DSX-1 port being transmitted to
the Network must meet the ones density requirements specified in
6241 1 and T1.403 (approxim ately 1 in every 8 bits must be a one and no
more than 15 consecutiv e ze ros). If the data from th e chann els viola te
density, the T-1 CSU/DSU, with this field enabled, puts ones in the
output data, inserting logic errors in the customer data

AT&T or ANSI

6-4

With Clear selected, the unit lets data from the Customer pass to the
Network transparently. If the facility provided by the T-1 Carrier is not
Clear Channel and this Clear Channel option is selected, the Customer
experiences data errors.

This field determines whether the unit is compatible with the AT&T
54016 Reference 54016 or ANSI T1.403 ESF Data Link messages. With
62411 displayed, the unit is compatible with the AT&T 54016 ESF
specification.

With AINSI T1.403 displayed, the unit is compatible with the T1.403
specification. As with the preceding selections, this opti on must ma tch
the requirements of the T-1 Carrier provider.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuring the C100/C150 Using the Console Port

Line build out

Timing

This selection programs the Line Build Out. In most cases, this
selection should be set to 0 dB.

This field selects the Timing option the unit uses. With Network
displayed, the Network supplies timing. This option must be selected
when connecting to a public T-1 Network, which provides T-1 timing.
This selection is the most used setting. If any of the other settings are
used when connected to a public T-1 facility and the transmit path to
the Network is not frequency locked to the Network, timing slips
occur. A typical indication of timing slips is frame losses occurring at a
fixed rate.

With Internal Timing selected, the unit’s internal oscillator is the
timing source. This mode is selected when using the unit as a Limited
Distance Modem (LDM) over Customer-owned wiring, or a T1 carrier
service that does not provide timing. When using this mode, the
remote unit at the other end should be programmed for “Network
supplies Timing.” The other selection, “Channel supplies Timing” is
used when the timing on the Channel is derived from a Public T-1
Network, or an extremely accurate timing source and the unit is used
as an LDM.

Remote loop disable

This selection is used to enable/disable the unit from recognizing
several remote loop commands. With this field disabled, the unit does
not respond to Remote Channel Loop. It still responds to the Network
Interface Remote Loop commands (Loop Up/Loop Down) and
Remote Payload Loop as required in Technical Reference 62411 and
ANSI T1.403. If this field is enabled, all remote loops are enabled and
remote loops can be set by remote commands.

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C100 and C150 T1/FT1 CSU/DSU

6-5

Configuring the C10 0/C150 Using the Console Port

Programming the customer inter f ace

C150

DSX-1 IN OR OUT

This choice is used to enable or disable the DSX-1 interface. With
disable selected, the DSX-1 interface is completely disabled and all
three LEDS (TX, RX and LOCK) associated with the DSX-1 interface
will not light. When there is no DSX-1 interface, the DSX-1 must be
disabled for proper operation of the unit. When a DSX-1 input is used,
this selection must be enabled.

DSX-1 FRAMING

The type of DSX-1 framing is determined by this field. With ESF
selected, the unit will generate and expect ESF framing to and from the
DSX-1 interface. W ith D4 selected, the unit will generate and expect D4
framing. The framing selected on the DSX-1 interface does not have to
match the framing on the Network Interface. The T-1 CSU/DSU can be
used to connect an ESF T-1 facility to a PBX which only supports D4.

DSX-1 coding

This field selects the type of coding the unit will generate. The B8ZS
selection makes the unit generate B8ZS encoding and in the AMI
selection causes the unit to generate AMI (Alternate Mark Inversion)
encoding. This coding selection, must match the Customer Equipment
connected to the DSX-1 interface otherwise intermittent errors can
occur.

6-6

DSX-1 line length/build out

This selection controls the output power of the T-1 driver on the DSX-1
interface. The driver on the DSX-1 interface can support both short
haul (PBXs up to 655 feet) and long haul (other T-1 CSUs up to 6000
feet) applications. When the DSX-1 interface is connected to customer
equipment with short haul interfaces, the selections that should be
used are 133, 266, 399, 533 or 655 feet depending on distance. When the
DSX-1 interface is connected to another T-1 CSU/DSU up to 6000 feet
away, the selections that should be used are the standard 0, -7.5, -15 or

-22.5. The typical selection is 133 feet/0 dB.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuring the C100/C150 Using the Console Port

Idle or busy fill character

This field selects the fill character, either an Idle or a Busy for insertion
into the DSX-1 output in all DS0s used by the Synchronous Channel.
With Idle displayed, an Idle character is inserted into all the unused
DS0s on the DSX-1 interface. With Busy selected, a Busy character is
inserted into all the unused DS0s. Typically the Idle character is the
insertion character. On a few older PBXs, the Busy character is
required.

Pressing the SPACE bar when on the Fill Ch aracter field advances the
blinking cursor to the Sync Channel Interface selection.

C100/C150

Synchronous channel interface

This field is used to select the interface on the Synchronous Channel.
With 422/530 selected, the interface selected is RS422/RS530 and all
the interface signals are on the DB 25 pin female connector on the rea
of the unit. With V.35 selected, the interface selected is CCITT V.35 and
all the interface signals are on the 34 pin female Winchester connector
on the rear of the unit. With RS232 selected, the interface selected is
RS232 and all interface signals are on the DB 25 pin female connector
on the r e a r of the unit . B ot h the 34 pin and 25 pin interface cables must
not be connected at the same time.

56000 or 64000

This field determines whether the bandwidth of all DS0s to the
Synchronous Channel is 56000 or 64000 bps. With 56000 selected, all
DS0s to the Synchronous Channel are 56000 bps. To calculate the
Channel speed, multiply 56000 times the number of DS0s going to the
Channel. If 4 DS0s were selected to go to the Synchronous Channel, the
Channel speed would be 224000 bps. Selecting 64000 in this field, gives
64000 bps to all the selected DS0s going to the Channel. The same
calculation applies when using 64000 bps. Multiply 64000 times the
selected DS0s to calculate Channel speed. The following referenced
chart lists all the multiples of 56000 and 64000 bps av ail able with the T­1 CSU/DSU.

06/17/97

Carrier (Receive Line Signal Detect) Control

See Table 3-5, Number of 56000 or 64000 DS0s selected and Figure 3-1,

Block diagram of Carrier (Receive Line Signal Detect) Control.

C100 and C150 T1/FT1 CSU/DSU

6-7

Configuring the C10 0/C150 Using the Console Port

Synchronous channel invert data

This selection determines whether data to and from the Synchronous
Channel is normal or inverted. When Disabled is displayed, data on
the Synchronous Channel passes normally. When Enabled is
displayed, both the transmit and receive data signals at the local
Synchronous Channel are inverted. By inverting the data, this feature
permits certain protocols such as HDLC, SDLC, and so forth, to pass
over the T-1 facility at multiples of 64000 bps and meet ones-density
requirements of the Network. When using this mode, usually both the
local and remote units have this option selected.

Synchronous Channel Invert External Transmit Clock

The External Transmit Clock field determines whether External
Transmit Clock from the Synchronous Channel is normal or in verted.
When Disable is selected, the External Transmit Clock on the
Synchronous Channel passes normally. With Enable selected, External
Tr ansmit Cl ock from the local Synchronous Channel is the inverted
Synchronous Channel signal.

This feature is used when the round trip delay of the Transmit Clock
exceeds one half bit time (due to cable length and higher frequencies).
This feature should be tried if sporadic errors are noticed on the
Synchronous Channel.

Internal or external transmit clock

This field determines whether Internal Clock or External Transmit
Clock is used. With Internal selected, Internal Transmit Clock from the
T-1 CSU/DSU is provided to the Synchronous Channel. With External
selected, External Transmit Clock from the terminal equipment to the
Synchronous Channel. When using this mode, External Transmit
Clock coming from the terminal equipment must be frequency-locked
to the Receive Clock provided by the T-1 CSU/DSU

Press ing th e SPACE bar when on th e Transmit Clock field advan ces th e
blinking cursor to the DS01 selection.

6-8

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuring the C100/C150 Using the Console Port

Programming the DS0s (C100 and C150)

C150 DSO assignment

C100 DSO assignment

These fields are used to determine whether a DS0 is given to the
Synchronous Channel or the DSX-1 interface. There are twenty-four
DS0’s in a T-1 frame and these DS0s can be assigned to the Channel or
DSX-1 on a contiguous or non-contiguous basis. Hitting Enter on any
of the DS0 fields changes the field from DSX-1 to Channel or from
DSX-1 to Channel.

Leaving a setting on DSX-1 assigns that DS0 to the DSX-1 Interface and
leaving it on Channel assigns that DS0 to the Synchronous Channel.
Even when the DSX-1 interface is disabled, these selections must be
made in order to determine how many DS0s go to the Synchronous
Channel. The programming of the DS0s must match the DS0 selection
in the remote unit when they are used on a point-to-point connection
or they must match the DS0 selection on the Fractional T-1 facility
provided by the T-1 Carrier supplier.

Pressing the SPACE bar when on DS24 field advances the blinking
cursor to the Network Interface Framing field.

These fields are used to determine whether a DS0 is given to the
Synchronous Channel. There are twenty-four DS0’s in a T-1 frame
and these DS0s can be assigned to the Channel on a contiguous or non­contiguous basis. Pressing Enter on any of the DS0 fields changes the
field from not used to Channel or from Channel to not used. Leaving a
setting on Channel assigns that DS0 to the Synchronous Channel. The
programming of the DS0s must match the DS0 selection in the remote
unit when they are used on a point-to-point connection or they must
match the DS0 selection on the Fractional T-1 facility provided by the
T-1 Carrier supplier.

06/17/97

Pressing the SPACE bar when on DS24 field advances the blinking
cursor to the Network Interface Framing field.

C100 and C150 T1/FT1 CSU/DSU

6-9

Configuring the C10 0/C150 Using the Console Port

6-10

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Chapter

7

Configuring the Console Port for SNMP

This chapter describes using the Consol and the front panel switches
to enable SNMP and set the IP address for SNMP communication.

Navigating the menu tree

To display any of the five screens listed in the Main Menu, advance the
blinking cursor to the left of the selection wanted and p res s the ENTE
key.

Figure 7-1 Main Menu with Console Activated

29 APR 1997 VERILINK CORPORATION 15:17:55
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Main Menu
Configuration
Local Registers
Diagnostics & Statistics
Service
Utilities
Deactivate Console
Software: REV 3.01
CONSOLE ACTIVATED
CURSOR FORWARD = [SPACE] SELECT = [ENTER] CURSOR BACK = [B]

6/15/99

Verilink C100 and C150 T1/FT1 CSU/DSU

7-1

Configuring the Console Port for SNMP

Configuring for SNMP

This section describes configuring the Console and module for SNMP.

Overview

To use an SN MP network manager, you need to enter the IP address
field in the Console main menu.

Figure 7-2 Configuration–Console example menu showing IP address field

29 APR 1997 VERILINK CORPORATION 14:31:45
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Configuration - Console
IP Address: 000.000.000.000
NETWORK INTERFACE CUSTOMER INTERFACES
Framing: ESF DSX1: Enable SYNC Channel
Coding: B8ZS Framing: ESF Interface: V.35
Density: Disable Coding: B8ZS Bandwidth: 56000
Mode: 62411 Line Length: 133 ft/0 dB Carrier: On
Line Build Out: 0 dB Fill Char: Idle Invert Data Disable
Timing: Network Invert Clk: Disable
Remote Loop: Enable Transmit Clk: Internal
DS01 DSX1 DS05 DSX1 DS09 DSX1 DS13 DSX1 DS17 DSX1 DS21 DSX1
DS02 DSX1 DS06 DSX1 DS10 DSX1 DS14 DSX1 DS18 DSX1 DS22 DSX1
DS03 DSX1 DS07 DSX1 DS11 DSX1 DS15 DSX1 DS19 DSX1 DS23 DSX1
DS04 DSX1 DS08 DSX1 DS12 DSX1 DS16 DSX1 DS20 DSX1 DS24 DSX1
CURSOR FORWARD = [SPACE] CURSOR BACK = [B]
SELECT = [ENTER] MAIN MENU = [ESC]

Procedure for setting the IP address

7-2

In conjunction with this procedure, you need to set the DIP switches in
Switch pack 1. After, you power-on reset the C100/C150 module. Full
procedures are given in this section.

Before hand, you must have r ecompiled your SNMP network softwar e
with the MIB provided on diskette. (For more information, see

Appendix D,

Initializing the console

C100 and C150 SNMP MIB

.)

1. Power up the unit and configure it for Console operation by
setting Switch 1 position 6 OFF and 7 ON.

For more information, see Chapter 3,

Switches

,section: Programming the unit configuration (C100 and

Configuration Using the DIP

C150), subsection: Switches, console, or SNMP activated.

2. Plug the VT100 console into the connector labeled CONSOLE IN.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Configuring the Console Port for SNMP

3. Enter password and activate the console.

Entering the IP address field

1. Make sure you have the unit in Console mode (not the switches
mode).

2. Go to the Configuration Screen and enter the IP address as
described in the following steps. The IP address field is at the to
left of the Configuration menu. Initially it is all set to zeros. There
are four three-digit segments to the number. You need to set each
segment separately.

3. Initially, the cursor is positioned at the beginning of the I
address field. Press

E

NTER

to enter the first segment of the IP

address field.

4. Once you are in the field, you can press the Space Bar to go
forward or the B-key to go backward until you position the cursor
to at the digit you wish to change.

Connecting the Network Management Console

5. Set the first number segment to the correct number by using the
Enter and Backspace keys to increment or decrement each IP
address number segment:

• Increment the number by pressing the Ente -key.

• Decrement the num b er by pressing the Backspace-key.

6. Use the Space key to advance to the next segment, until you have
entered all digits of the IP address.

7. Press the Space Bar to enter the next number segment of the I
address or the B-key to go back to the previous number segment.

Increment or decrement each number segment as necessary, until
you have set the entire IP address. Incrementing and
decrementing are described above.

8. Press the Space Bar again to exit the IP a d d ress fie ld and return to
the Main menu.

1. Once the IP address has been entered, as described above, power­off the unit.

2. Re-program Switch 1 for SNMP operation by setting Switch pack
1, switch position 6 OFF and switch 7 ON. The CONSOLE IN
connecto r now becomes SLIP inter fa c e .

06/17/97

C100 and C150 T1/FT1 CSU/DSU

7-3

Configuring the Console Port for SNMP

3. Remove VT100 console from the CONSOLE IN connector.

4. Power-on the unit.

5. Plug SNMP Manager into CONSOLE IN connector. The unit is
now ready for SNMP Management.

7-4

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Chapter

8

Performance Monitoring with the Console Port

This chapter describes local performance registers monitoring and
diagnostics and statistics using the Console. It also provides
information on interpreting the front panel LEDs in conjunction with
console status and statistical displays of loopbacks and alarms.

Main Menu

Figure 8-1 Main Menu with Console Deactivated

29 APR 1997 VERILINK CORPORATION 14:46:48
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Main Menu
Configuration
Local Registers
Diagnostics & Statistics
Service
Utilities
Password:
Software: REV 3.01
CONSOLE DEACTIVATED
CURSOR FORWARD = [SPACE] SELECT = [ENTER] CURSOR BACK = [B]

The Main Menu is the first sc ree n dis p l a yed (see Figure 8-1).

Navigating the menu tree

6/15/99

To display any of the five screens listed in the Main Menu, advance the
blinking cursor to the left of the selection wanted and p res s the ENTE
key.

Verilink C100 and C150 T1/FT1 CSU/DSU

8-1

Performance Monitoring with the Console Port

Figure 8-2 Main Menu with Console Activated

29 APR 1997 VERILINK CORPORATION 15:17:55
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Main Menu
Configuration
Local Registers
Diagnostics & Statistics
Service
Utilities
Deactivate Console
Software: REV 3.01
CONSOLE ACTIVATED
CURSOR FORWARD = [SPACE] SELECT = [ENTER] CURSOR BACK = [B]

8-2

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Local Registers

Figure 8-3 Local Registers Page 1

29 APR 1997 VERILINK CORPORATION 14:48:37
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Local Registers Page 1

IN ES
01 000 900 000 000 000 000 17 000 900 000 000 000 000 33 000 900 00 0 000 000 000
02 000 900 000 000 000 000 18 000 900 000 000 000 000 34 000 900 00 0 000 000 000
03 000 900 000 000 000 000 19 000 900 000 000 000 000 35 000 900 00 0 000 000 000
04 000 900 000 000 000 000 20 000 900 000 000 000 000 36 000 900 00 0 000 000 000
05 000 900 000 000 000 000 21 000 900 000 000 000 000 37 000 900 00 0 000 000 000
06 000 900 000 000 000 000 22 000 900 000 000 000 000 38 000 900 00 0 000 000 000
07 000 900 000 000 000 000 23 000 900 000 000 000 000 39 000 900 00 0 000 000 000
08 000 900 000 000 000 000 24 000 900 000 000 000 000 40 000 900 00 0 000 000 000
09 000 900 000 000 000 000 25 000 900 000 000 000 000 41 000 900 00 0 000 000 000
10 000 900 000 000 000 000 26 000 900 000 000 000 000 42 000 900 00 0 000 000 000
11 000 900 000 000 000 000 27 000 900 000 000 000 000 43 000 900 00 0 000 000 000
12 000 900 000 000 000 000 28 000 900 000 000 000 000 44 000 900 00 0 000 000 000
13 000 900 000 000 000 000 29 000 900 000 000 000 000 45 000 900 00 0 000 000 000
14 000 900 000 000 000 000 30 000 900 000 000 000 000 46 000 900 00 0 000 000 000
15 000 900 000 000 000 000 31 000 900 000 000 000 000 47 000 900 00 0 000 000 000
16 000 900 000 000 000 000 32 000 900 000 000 000 000 48 000 900 00 0 000 000 000

PAGE 2 = [ENTER] MAIN MENU = [ESC]

UAS SES BES LOF CSS IN ES UAS SES BES LOF CSS IN ES UAS SES BES LOF CSS

Performance Monitoring with the Console Port

The Local Registers Page 1 and Page 2 screens are for viewing only.
They display the registers that Technical Reference 54016 require to be
down loaded via the Facility Data Link in ESF. Local Registers Page 1
is displayed when entering this screen from the Main Menu. Pressing
Enter displays Local Registers Page 2 and pressing Enter again returns
to Local Registers Page 1. Pressing the ESCape key returns to the Main
Menu.

Definitions for the abbreviations at the top of each column are as
follows:

IN Interval - The 96 previous fifteen minute intervals

required to be stored by Tech Ref 54016.

ES Errored Seconds - The number of Errored

Seconds in that occurred in each 15 minute
interval.

An Errored Second is a second that contains a
CRC6 error or an Out Of Frame (OOF) condition.

06/17/97

C100 and C150 T1/FT1 CSU/DSU

8-3

Performance Monitoring with the Console Port

UAS Unavailable Seconds—The number of

BES Bursty Errored Seconds - The number of Bursty

LOF Loss of Frame - The number of times a Loss Of

CSS Controlled Slip Seconds - The number of

Unava ila ble Secon ds th at occurred in ea ch
minute interval.

Unavailable Seconds are the number of one
second intervals during which service is
unavailable.

Errored Seconds that occurred in each 15 minute
interval.

Frame occurs in each 15 minute interval.

Controlled Slip Seconds that occurred in each 15
minute interval. A Controlled Slip Second is any
second in which the occurrence of a replication or
deletion of a DS1 frame by the receiving T-1
CSU/DSU.

For a more detailed description of the abbreviations refer to Tech n ical
Reference 54016.

Figure 8-4 Local Registers Page 2

29 APR 1997 VERILINK CORPORATION 14:49:33
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Local Registers Page 2
IN ES UAS SES BES LOF CSS IN ES UAS SES BES LOF CSS IN ES UAS SES BES LOF CSS

49 000 900 000 000 000 000 65 000 900 000 000 000 000 81 000 900 00 0 000 000 000
50 000 900 000 000 000 000 66 000 900 000 000 000 000 82 000 900 00 0 000 000 000
51 000 900 000 000 000 000 67 000 900 000 000 000 000 83 000 900 00 0 000 000 000
52 000 900 000 000 000 000 68 000 900 000 000 000 000 84 000 900 00 0 000 000 000
53 000 900 000 000 000 000 69 000 900 000 000 000 000 85 000 900 00 0 000 000 000
54 000 900 000 000 000 000 70 000 900 000 000 000 000 86 000 900 00 0 000 000 000
55 000 900 000 000 000 000 71 000 900 000 000 000 000 87 000 900 00 0 000 000 000
56 000 900 000 000 000 000 72 000 900 000 000 000 000 88 000 900 00 0 000 000 000
57 000 900 000 000 000 000 73 000 900 000 000 000 000 89 000 900 00 0 000 000 000
58 000 900 000 000 000 000 74 000 900 000 000 000 000 90 000 900 00 0 000 000 000
59 000 900 000 000 000 000 75 000 900 000 000 000 000 91 000 900 00 0 000 000 000
60 000 900 000 000 000 000 76 000 900 000 000 000 000 92 000 898 00 0 000 001 000
61 000 900 000 000 000 000 77 000 900 000 000 000 000 93 000 000 00 0 000 000 000
62 000 900 000 000 000 000 78 000 900 000 000 000 000 94 000 000 00 0 000 000 000
63 000 900 000 000 000 000 79 000 900 000 000 000 000 95 000 000 00 0 000 000 000
64 000 900 000 000 000 000 80 000 900 000 000 000 000 96 000 000 00 0 000 000 000

PAGE 1 = [ENTER] MAIN MENU = [ESC]

8-4

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Diagnostics and Statistics

Figure 8-5 Diagnostics and Statistics Screen

29 APR 1997 VERILINK CORPORATION 14:50:45
UNIT ADDRESS 1 T-1 CSU/DSU CONSOLE
Diagnostics & Statistics
Local Loops NI Alarms 15m 24 hr CI Alarms Total
NI: Off ESF Err Event: 900 65535 ESF Err Event: 999999
DSX1: Off CRC6 Errors: 000 00000 CRC6 Errors: 000000
Chan: Off Errored Secs: 000 00000 Errored Secs: 000000
Payload: Off Unavail Secs: 236 65535 Unavail Secs: 082224
Remote Loops Sev Errd Secs: 000 00000 Sev Errd Secs: 000000
NI: Off Bur Errd Secs: 000 00000 Bur Errd Secs: 000000
DSX1: Off Loss of Frame: 000 00001 Loss of Frame: 000001
Chan: Off BiPolar Viol: 869 65047 BiPolar Viol: 999999
Test: Off Tx Bit Dens: 000 00000 Tx Bit Dens: 999999
Test Seconds: 000000 Rx Bit Dens: 900 65535 Rx Bit Dens: 999999
Secs in Err: 000000 YEL Alarm Sec: 000 00000 YEL Alarm Sec: 000000
Err Free Sec: 000000 BLU Alarm Sec: 000 00000 BLU Alarm Sec: 000000
Ctl Slip Secs: 000 00000
Status: FU000000 Val Interval: 91 Val Interval: 91
NI LEDS: TX RX * DSX1 LEDS: TX * RX * Chan LEDS: TX RX CD
OOF OOF
CURSOR FORWARD = [SPACE] CURSOR BACK = [B]
SELECT = [ENTER] RESET = [R] MAIN MENU = [ESC]

Performance Monitoring with the Console Port

06/17/97

The blinking cursor is positioned to the left of the Local NI Loop
Selection when entering the Diagnostics and Statistics screen. There
are eight fields that be changed on this screen ; seven loopbacks and the
test pattern. In addition there are a variety of other statistics on this
screen.

All the loops and the test pattern work in conjunction with the front
panel and with remote loops coming from the Network. They are both
switches and indicators. If a loop is activated at the front panel, the
screen changes to show the loopback and conversely if a loop is turned
On with the console, the LED indicators on the front panel displays it.
If a loop field displays On, the loop was activated locally either by the
front panel or console. If the scr een displays On-Rem, this indicates the
loop came from the Network. When using loops and test patterns, care
must be taken to insure there are no conflicts between the console, the
front panel and loops coming from the Network. In general, the last
loop activated takes priority.

The following is a description of the loopbacks, test pattern and
statistics:

C100 and C150 T1/FT1 CSU/DSU

8-5

Performance Monitoring with the Console Port

Local NI loop

Local DSX-1 loop (C150)

Local channel loop

Pressing the ENTER key while on the Local NI Loopback when Off is
displayed causes the display to go to On and the NI transmitter of the
T-1 CSU/DSU to be looped back to its receiver. If the display is On or
On-Rem, pressing the ENTER key resets the loopback and the field
displays to Off.

Hitting the ENTER key while on the Local DSX-1 Loopback when Off
is displayed will cause the display to go to On and the DSX-1
transmitter will be looped back to its receiver. (See Chapter 4,

Indicators and Diagnosti cs

.) If the display is On or On-Rem, pressing the

LED

ENTER key will reset the loopback and the field will display Off

Pressing the ENTER key while on the Local Channel Loopback when
Off is displayed causes the display to go to On and the Channel is pu
into a bi-directional loopback. (See Chapter 4,

Diagnostics

.) If the display is On or On-Rem, pressing the ENTER key

LED Indicato rs and

resets the loopback and the field display Off.

Local payload loop

Remote NI loop

Remote channel loop

Pressing the ENTER key while on the Local Payload Loopback when
Off is displayed causes the display to go to On and the T-1 CSU/DSU
is put into a Payload loopback. (See Chapter 4,

Diagnostics

.) If the display is On or On-Rem, pressing the ENTER key

LED Indica t or s and

resets the loopback and the field displays to Off.

Pressing the ENTER key while on the Remote NI Loopback when Off
is displayed causes the display to go to On and the T-1 CSU/DSU to
send Loop Up command for five seconds to the remote unit. (See

Chapter 4,

LED Indicators and Diagnostics

.) If the display is On, pressing
the ENTER key sends a Loop Down command for five seconds to the
remote unit, resets the loopback and the field display to Off. Since this
loopback latches the unit at the other remote, care must be taken to
ensure that the Loop Down command is sent when finished testing.

Pressing the ENTER key while on the Remote Channel Loopback
when Off is displayed causes the display to go to On and sends a V.54
Loop On command to the Channel interface at the remote. (See

Chapter 4,

LED Indicators and Diagnostics

.) If the display is On, pressing
the ENTER key send s a V.54 Loop Off command t o the rem ote unit a n

8-6

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Performance Monitoring with the Console Port

the field displays Off. Since this loopback latches the unit at the other
remote, care must be taken to ensure that the Loop Off command is
sent when finished testing.

Remote DSX-1 loop (C150)

Test pattern (C100)

Pressing the ENTER key while on the Remote DSX-1 Loopback when
Off is displayed will cause the display to go to On and will send a V.54
Loop On command to the DSX-1 interface at the remote. If the display
is On, pressing the ENTER key will send a V.54 Loop Off command to
the remote unit and the field will display Off. Since this loopback
latches the unit at the other remote, care must be taken to ensure that
the Loop Off command is sent when finished testing.

Pressing ENTER when on the Test Pattern field when Off is displayed
causes the built-in 2047 test pattern to be sent. The 2047 pattern always
is sent from the T-1 CSU/DSU to the Network (see circled area in
example in Figure 4-14) unless a Local CI Channel Loopback (see
circled area in the example in Figure 4-17) has been selected. If no local
loopbacks are present, the 2047 pattern checker looks for the 2047
pattern from the Network. If a Local CI Channel Loopback has been
activated, the 2047 test pattern is sent to the Channel and the 2047
pattern checker looks for the pattern from the Channel. When the Test
Pattern is On, Test Sec onds and Errored or Error Free Seconds is
counting as described in the next paragraph. Pressing the SPACE bar
when on this selection advances the cursor to Local NI Loop.

Test pattern (C150)

06/17/97

Pressing ENTER when on the Test Pattern field when Off is displayed
will cause the built-in 2047 test pattern to be sent . The 20 47 pattern will
always be sent from the T-1 CSU/DSU to the Network unless a Local
CI DSX-1 or a Local CI Channel Loopback has been selected. (See

Chapter 4,

LED Indicators and Diagnostics

.) If no local loopbacks are
present, the 2047 pattern checker will look for the 2047 pattern from
the Network. If a Local CI DSX-1 or Channel Loopback has been
activated, the 2047 test pattern will be sent to the DSX-1 or Channel
and the 2047 pattern checker will look for the pattern from either the
DSX-1 or Channel depending on the selected loopback. When the Test
Pattern is On, Test Sec onds and Errored or Error Free Seconds will be
counting as described in the next paragraph. Hitting the SPACE bar
when on this selection will advance the cursor to Local NI Loop.

C100 and C150 T1/FT1 CSU/DSU

8-7

Performance Monitoring with the Console Port

Test Seconds

Secs In Err and Error Free Secs

Status

When the Test Pattern is On, Test Seconds begins counting in one
second increments. When the Test Pattern is turned Off, Test Seconds
stops counting. Pressing the lette R resets the counter to zero.

When the Test Pattern is On, a comparator looks at the received Test
Pattern and compares it to the transmit Test Pattern. The Seconds In
Error counter is incremented if one or more bits do not compare
during each second. The Seconds In Error counter increments only
once per second, regardless of the amount of bit errors during eac
second. The count in the Error Free Seconds counter is the difference
between the Test Seconds counter less the Seconds In Error counter.
Both the Secs In Err and the Err Free Secs counter in addition to the
Total Seconds co unter are reset to zero by pressing R.

C100 status

The Status byte is required for ESF and displays the current status.
Status consists of the unavailable signal and the Payload LoopBack
status.

!

All statistics and counters are updated once per second. There are two
sets of counters for the Network Interface. The two sets of Network
Interface counters are for the curre nt 15 minute interval and the last 24
hour cumulative count. The Network Interface counters can only be
reset by removing power from the unit. The section below is a
description of the e rror c o u n t ers and statis tics.

Status (C150)

The Status byte is required for ESF and displays the current status.
Status consists of the unavailable signal and the Payload LoopBack
status.

All statistics and counters are updated once per second. There are two
sets of counters for the Network Interface and one set for the Customer
Interface DSX-1 channel. The two sets of Network Interface counters
are for the current 15 minute interval and the last 24 hour cumulative
count.

CAUTION

Once it is configured and operating , do not pow er-on/off res et the unit, because,
currently, may reset the TelCo registers.

8-8

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Performance Monitoring with the Console Port

The Network Interface (TelCo) counters can be reset only by removing
power from the unit.

The DSX-1 Customer Interface counters can be reset by pressing the
letter “r”. The section below is a description of the counters and
statistics.

Counters and Statistics

ESF Err Event

Displays the number of ESF Errored Events. An ESF Error Event is
determined by logical ORing of a CRC6 error and the occurrence of an
OOF (Out Of Frame).

CRC6 Errors

Displays the number of CRC6 Errors. A CRC6 Error occurs when the
CRC6 field calculated on the incoming Network signal does not agree
with the CRC6 field contained in the received signal from the
Network.

Errored Secs

Displays the number of Errored Seconds. An Errored Second is a
second with one or more CRC6 errors or one or more OOFs.

Unavail Secs

Displays the number of Unavailable Seconds. An Unavailable Second
is a second during which service is not available.

06/17/97

Sev Errd Secs

Displays the number of Severe ly E rrored Seconds. A Severely Errored
Second is a second with 320 or more CRC6 errors or one or more
OOFs.

Bur Errd Secs

Displays the number of Bursty Errored Seconds. A Bursty Errored
Second is a second with more than one but less than 320 CRC6 errors.

C100 and C150 T1/FT1 CSU/DSU

8-9

Performance Monitoring with the Console Port

Loss of Frame

Displays the number of Loss Of Frames. A Loss Of Frame starts with

2.5 seconds continuous Loss Of Signal and clears with at least one
second of no Loss Of Signal.

NI Bipolar Viol

Displays the number of BiPolar Violations received from the Network.

DSX-1 BIPOLAR VIOL (C150)

Displays the number of BiPolar Violations received from the DSX-1

NI TX Bit Dens

Displays the number of Bit Density Violations transmitted to the
Network.

NI RX Bit Dens

Displays the number of Bit Density Violations received from the
Network.

DSX-1 TX Bit Dens (C150)

Displays the number of Bit Density Violations transmitted to the DS

1.

DSX-1 RX Bit Dens (C150)

Displays the number of Bit Density Violations received from the DSX-

1.

NI Yel Alarm Sec

Displays the number of seconds which had at least one Yellow Alarm.
Yellow Alarm is a received signal or message which indicates that the
Network is not receiving a T-1 frame from the T-1 CSU/DSU.

8-10

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Performance Monitoring with the Console Port

NI Blu Alarm Sec

Displays the number of seconds which had at least one Blue Alarm.
Blue Alarm or Alarm Indication Signal (AIS) is an unframed all ones
signal that is received from the Network in lieu of a normal signal
upon loss of the originating signal.

DSX-1 Yel Alarm Sec (C150)

Displays the number of seconds which had at least one Yellow Alarm.
DSX-1 Yellow Alarm is a received signal or message which indicates
that the customer equipment connected to the DSX-1 Channel is not
receiving a T-1 frame from the T-1 CSU/DSU.

DSX-1 BLU ALARM SEC (C150)

Displays the number of seconds which had at least one Blue Alarm.
DSX-1 Blue Alarm or Alarm Indication Signal (AIS) is an unframed all
ones signal that is received from the customer equipment in lieu of a
normal signal.

Ctl Slip Secs

Displays the number of seconds which had one or more Controlled
Slips. A Controlled Slip is the occurrence of a replication or deletion of
a frame from the channel interface.

Val Interval

Displays the number of Valid Intervals. Valid intervals are those
intervals si nc e the last r e s e t , if the reset occurred in the last 24 hours.

NI TX and RX LEDs

The two asterisks next to TX and RX represent LEDS which reflect the
status of transmit and receive data on the Network Interface. These
indicators are on when data spacing and off when data is marking.

DSX-1 TX and RX LEDS (C15 0)

The two asterisks next to TX and RX represent LEDS which reflect the
status of transmit and receive data on the DSX-1 Interface. These
indicators are on when data spacing and off when data is marking

06/17/97

C100 and C150 T1/FT1 CSU/DSU

8-11

Performance Monitoring with the Console Port

Chan TX and RX LEDs

The two asterisks next to TX and RX represent LEDS which reflect the
status of transmit and receive data on the Channel Interface. These
indicators are on when data spacing and off when data is marking.

Chan CD LED

The asterisks next to CD represents the status of the Carrier (RLSD)
contr ol si gnal being sent to Sync hro nous Chan nel. Whe n On, Carr ier is
high and when off, Carrier is low.

8-12

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Appendix

A

Network Interface (NI)

C100 and C150 Specifications

This appendix contains technical specifications for the C100 and C150.
Specifications apply to both unless otherwise specified.

Line Rate 1.544 Mbps + or - 50 ppm
Line Format Bipolar AMI or B8ZS
Pulse Characteristics AT&T 62411, T1.403 & Part 68 compliant
Impedan c e 100 ohms, inpu t and output
Line Build Out (LBO) 0, -7.5, -15, or -22.5 dB
Elastic Store 1 frame ± 1 frame
Interface Termination 8-Position RJ48C
Timing Source Network, Internal, CI Channel

Customer Interface (CI)

C150 only: CI DSX-1

LDM Mode Will drive up to 6000 feet when used as

LDM

C150 only

DSX-1 signal input level of customer interface:

minimum of -22 dB

Rate: sync channel up to 1.536 Mbps and any combination of

56K or 64K bps
Rate: DSX-1 channel (C150 only) 1.544 Mbps +/- 50 ppm
Interfaces (Sync Channel)

Electrical: CCITT V.35

EIA RS422/RS530

6/15/99

EIA RS232

Verilink C100 and C150 T1/FT1 CSU/DSU

A-1

C100 and C150 Specification s

Network pro tection

Interfaces—Electrical (DSX-1 Channel)

(C150 onl y ) Bip o l a r AM I / B 8 ZS
Mechanical—Sync Channel
RS530, RS422, RS232; 25 Pin female V.35; 34 Pin female
Mechanical—DSX-1 Channel (C150 only)

Bipolar: 8-position RJ48C
Format, Sync channel Binary S er ial Synchronous
Format, DSX-1 channel (C150 only) Bipola r AMI
LDM Mode Will drive up to 6000 feet when used as

LDM (Limited Distance Modem).

Indicators

Pulse Insertion Pulse Insertion will occur when the CI

inputs more than 15 consecutive ZEROS o

when the CI does not input at least “n”

ONES in each and every time window of 8 X

(n+1) bits (where “n” = 1 to 23).
Certification Meets FCC Part 15 and Part 68 Complies

with AT&T Tech Pub 6241 1, 54016 and ANSI

T1.403-1989
Programming Programmed by 7 DIP switch packs or

ASCII CRT
Console Port Compatible with VT100 CRTs. RS232

interface with speed of 9600 bps with 8 data

bits, 1 stop bit and no parity. Supports dial-

in modems. Control-D used for disconnect.

CI Chan TX DATA Lit when CI RX DATA is spacing.
CI Chan RX DATA Lit when CI TX DATA is spacing.
CI CCI Chan RTS Lit when CI RTS is spacing.

A-2

CI Chan CTS Lit when CI CTS is spacing.
CI Chan DSR Lit when CI DSR is spacing.
CI Chan Carrier Lit when Carrier to Channel is on.
CI Chan DTR Lit when CI DTR is spacing.

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

C100 and C150 Specifications

BPV ALARM Lit when Bipolar Violation received from

Network.
DENSITY ALARM Lit when Ones Density Violation is detected.
YELLOW ALARM Lit when YELLOW alarm received from

Network.
BLUE ALARM Lit when BLUE alarm received from

Network.
NI LOCK Green when unit is frame-locked to

Network. Red when Out Of Frame (OOF).
NI TX DATA Lit when NI TX DATA is spacing.
NI RX DATA Lit when NI RX DATA is spacing.
Local Network (NI) Lit when Local Network loop is detected.
Local CI Chan Lit when Local CI Channel loop is detected.
Local Payload Lit when Payload loop is detected.
Remote Network (NI) Lit when Remote Network loop is selected.
Remote CI Chan Lit when Remote CI Channel loop is

selected.
Test Pattern Green when the Test Pattern is good. Red

when the Test Pattern is not good.

C150 only

CI DSX1 TX DATA Lit when DSX1 TX DATA is spacing.
CI DSX1 RX DATA Lit when DSX1 RX DATA is spacing.
CI DSX1 LOCK Green when unit is frame-locked to DSX-1

channel. Red when DSX1 channel is Out Of

Frame (OOF).
Local CI DSX-1 Chan Lit when Local CI DSX-1 Channel loop is

detected.
Remote CI DSX-1 Chan Lit when Remote CI DSX-1 Channel loop is

selected.

Switches

6/15/99

Select Momentary Pushbutton
Start Momentary Pushbutton

Verilink C100 and C150 T1/FT1 CSU/DSU

A-3

C100 and C150 Specification s

Loopbacks generated

Loopbacks responded to

Local Network (NI) Loopback Network to CSU.
Local CI Chan Bidirectional Loopback at CI Channel

Interface.
Local CI DSX-1Chan (C150 only) Loopback CI DSX-1 output to

input.
Local Payload Local ESF Payload Loopback.
Remote Network (NI) Loop Up and Loop Down to CSU at remote.
Remote CI Chan V.54 Loopback to CI Channel at remote.
Remote CI DSX-1Chan (C150 only) V.54 Loopback to CI DSX-1

Channel at remote.

Payload ESF Payload from Network.
Network (NI) Loop Up and Loop Down from Network o

remote unit.
Remote CI Chan V.54 Loopback from remote CSU.
Remote CI DSX-1 Chan (C150 only) V.54 Loopback from remote

CSU.

Pa tt er n generator and checker

Power input and consumption

Physical

2047 Generates and checks a 2047 (211-1) bit

pseudo-random pattern

Power sup ply A C-to-DC adapter

Input 12 Watts: 120 VAC, 57 to 63 Hz
Output 12 VDC, 500 mA

Module

12 VDC, 5 -7 Watts, 24 BTU/hr

Dimensions 2.00" (5.08 cm) high

8.00" (20.32 cm) wide

7.50" (19.05 cm) deep

A-4

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Weight 9.70 lbs (4.40 kg)
Mounting Tabletop

C100 and C150 Specifications

Environmental

Operating Temperature 0 to 50 degrees C, 32 to 122 F
Relative Humidity 0% to 95%, non-condensing

6/15/99

Verilink C100 and C150 T1/FT1 CSU/DSU

A-5

C100 and C150 Specification s

A-6

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Appendix

B

Sample Applications

This appendix contains sample applications using the C100 and C150.
Each application includes a description, an illustration and an
illustrated table of switch settings.

SW3 is not used in the C100. When using a C150 for an application that
can also be implemented with a C100 or only with a C150, you must
set SW3 switches as indicated in the table for the corresponding
sample application.

The following illustrations describe applications that can be
implemented using either a C100 or C150:

■ Figure B-1, Example: C100/C150 T1 CSU/DSUs connecting two

LANs together over T1/F-T1

■ Table B-2, Switches: C100/150 T-1 CSU/DSU to Connect to a

Frame Relay Service

■ Figure B-3, Using the T-1 C100/C150 CSU/DSUs connecting two

routers in LDM mode

The following illustrations describe applications that can be
implemented using only a C150:

■ Figure B-4, C150 T-1 CSU/DSUs connecting two PBXs over T-1

and converting D4 to ESF

■ Table B-4, Switches: C150 CSU/DSUs connecting PBXs over T-1

and converting D4 to ESF

■

Figure B-5, C150 CSU/DSUs connecting two PBXs and two
routers over a T-1 facility

■

Table B-5, Switches: C150 CSU/DSUs connecting PBXs and
routers over a T-1 facility

6/15/99

Verilink C100 and C150 T1/FT1 CSU/DSU

B-1

Sample Applications

C100 T-1 Using V.35 Interfaces In Router Application

C100/C150

Figure B-1 depicts a typical r outer appl ication us ing the CSU/DSU’s t o

connect two LANs together over a Fractional T-1 facility. The routers
have V.35 interfaces and operate at 384000 bps.

Figure B-1 illustrates the switch settings for the near and far ends.

Switch pack 4, position 2 is Off and Switch pack 4 position 3 is On in
both units to make the interfaces V.35 (they could be programmed
differently at each end). Switch pack 4 position 4 in both units are On
enabling all selected DS0’s to be 64000 bps. Switch pack 5 positions 1
through 6 are On (6 DS0s times 64000 bps = 384000). Care must be
taken to ensure the DS0s selected are the same in both units and that
they match the DS0’s provisioned by the Fractional T-1 carrier.

Timing is left in the default setting of Network provides timing with
Switch pack 2 positions 7 and 8 Off since the units are connected to a
carrier-provided T-1 Network.

Table B-1 illustrates a typi cal appl ication u sing the T-1 CSU/DSUs
connecting two LANs together over a Fractional T-1 facility.

The Off position of the DIP switch is the rocker arm of the switch in its
lowest position (down) on the side of the switch pack closest to the
front panel.

Figure B-1 Example: C100/C150 T1 CSU/DSUs connecting two LANs together over T1/F-T1

Local Site

C100/150 C100/150

V.35

TEL-LINK

................

T1 CSU/DSU

LAN LAN

ROUTER

CI Sync

NI

NETWORK

Remote Site

NI

................

T1 CSU/DSU

TEL-LINK

CI Sync

V.35

ROUTER

B-2

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Table B-1 Switches: C100/C150 CSU/DSUs connecting two LANs over T1/F-T1

OFF S1 ON
Addr 1 OFF Addr 1
Addr 2 OFF Addr 2
Addr 4 OFF Addr 4

Switches OFF Console
R Loop OFF Disabled

ESF OFF D4
B8ZS OFF AMI
Density OFF Clea
54016 OFF T1403
0 dB O FF -7.5 dB
0 dB O FF -7.5 dB
Net(8Off) OFF Ch(8On)
DSX(7On) OFF Int(7Off)

DSX IN ON DSX OUT
ESF OFF D4
B8ZS OFF AMI
0 dB OFF 655 feet
0 dB OFF 655 feet
0 dB OFF 655 feet
Idle OFF BUSY

RS530 OFF
RS232 ON V35(2Off)
56000 ON 64000
Carr On OFF Switched
Data OFF Invert
Clock OFF Invert
Int TXC OFF Ext TXC

01-DSX1 ON Channel
02-DSX1 ON Channel
03-DSX1 ON Channel
04-DSX1 ON Channel
05-DSX1 ON Channel
06-DSX1 ON Channel
07-DSX1 O FF Channel
08-DSX1 O FF Channel

09-DSX1 O FF Channel
10-DSX1 O FF Channel
11-DSX1 O FF Channel
12-DSX1 O FF Channel
13-DSX1 O FF Channel
14-DSX1 O FF Channel
15-DSX1 O FF Channel
16-DSX1 O FF Channel

17-DSX1 O FF Channel
18-DSX1 O FF Channel
19-DSX1 O FF Channel
20-DSX1 O FF Channel
21-DSX1 O FF Channel
22-DSX1 O FF Channel
23-DSX1 O FF Channel
24-DSX1 O FF Channel

OFF
OFF

OFF SNMP

S2

S3

OFF
S4

OFF

S5

S6

S7

➸

S3 set using C150 only

When using C100, S5-S7: Off means:
Channel Not Used.

➸

➸

OFF S1 ON
Addr 1 OFF Addr 1
Addr 2 OFF Addr 2
Addr 4 OFF Addr 4

Switches OFF Console
R Loop OFF Disabled

ESF OFF D4
B8ZS OFF AMI
Density OFF Clear
54016 OFF T1403
0 dB O FF -7.5 dB
0 dB O FF -7.5 dB
Net(8Off) OFF Ch(8On)
DSX(7On) OFF Int(7Off)

➸

DSX IN ON DSX OUT
ESF OFF D4
B8ZS OFF AMI
0 dB OFF 655 feet
0 dB OFF 655 feet
0 dB OFF 655 feet
Idle OFF BUSY

RS53 OFF
RS23 ON V35(2Off)
56000 ON 64000
Carr On OFF Switched
Data OFF Invert
Clock OFF Invert
Int TXC OFF Ext TXC

01-DSX1 ON Channel
02-DSX1 ON Channel
03-DSX1 ON Channel
04-DSX1 ON Channel
05-DSX1 ON Channel
06-DSX1 ON Channel
07-DSX1 O FF Channel
08-DSX1 O FF Channel

09-DSX1 O FF Channel
10-DSX1 O FF Channel
11-DSX1 O FF Channel
12-DSX1 O FF Channel
13-DSX1 O FF Channel
14-DSX1 O FF Channel
15-DSX1 O FF Channel
16-DSX1 O FF Channel

17-DSX1 O FF Channel
18-DSX1 O FF Channel
19-DSX1 O FF Channel
20-DSX1 O FF Channel
21-DSX1 O FF Channel
22-DSX1 O FF Channel
23-DSX1 O FF Channel
24-DSX1 O FF Channel

Sample Applications

OFF
OFF

OFF SNMP

S2

S3

OFF
S4

OFF

S5

S6

S7

6/15/99

Verilink C100 and C150 T1/FT1 CSU/DSU

B-3

Sample Applications

T-1 C 100/C150 CSU/DS U Connec ting To A Frame Relay Service

C100/C150

Figure B-2 shows the T-1 CSU/DSU in a single-ended application

connected to a Frame Relay Service. The Network Interface (NI)
connects to the Fractional T-1 facility and the Customer Interface (CI)
which is 56000 bps with an RS232 interface in this example connects to
the LAN router. The Fractional T-1 facility is ESF framing with B8ZS
encoding.

Table B-2 illustrates the switch configuration. Switch pack 4 position 2
is On and position 3 is Off to select the RS232 interface. Switch pack 5
position 1 is On to allocate 1 DS0 to the Synchronous channel.

Timing is left in the default setting of Network provides timing with
Switch pack 2 positions 7 and 8 Off since the units are connected to a
carrier-provided T-1 Network.

The Off position of the DIP switch is the rocker arm of the switch in its
lowest position (down) on the side of the switch closest to the front
panel.

Figure B-2 Using the C100 T-1 CSU/DSU to connect to a Frame Relay service

Local Site

C100/150

LAN

ROUTER

CI Sync

TEL-LINK

................

T1 CSU/DSU

NI

FRAME
RELAY
SERVICE

B-4

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99

Table B-2 Switches: C100/150 T-1 CSU/DSU to Connect to a Frame Relay Service

OFF S1 ON
Addr 1 OFF Addr 1
Addr 2 OFF Addr 2
Addr 4 OFF Addr 4

Switches OFF Console
R Loop OFF Disabled

ESF OFF D4
B8ZS OFF AMI
Density OFF Clea
54016 OFF T1403
0 dB O FF -7.5 dB
0 dB O FF -7.5 dB
Net(8Off) OFF Ch(8On)
DSX(7On) OFF Int(7Off)

DSX IN ON DSX OUT
ESF OFF D4
B8ZS OFF AMI
0 dB OFF 655 feet
0 dB OFF 655 feet
0 dB OFF 655 feet
Idle OFF BUSY

RS530 ON
RS232 OFF V35(2Off)
56000 OFF 64000
Carr On OFF Switched
Data OFF Invert
Clock OFF Invert
Int TXC OFF Ext TXC

01-DSX1 ON Channel
02-DSX1 O FF Channel
03-DSX1 O FF Channel
04-DSX1 O FF Channel
05-DSX1 O FF Channel
06-DSX1 O FF Channel
07-DSX1 O FF Channel
08-DSX1 O FF Channel

09-DSX1 O FF Channel
10-DSX1 O FF Channel
11-DSX1 O FF Channel
12-DSX1 O FF Channel
13-DSX1 O FF Channel
14-DSX1 O FF Channel
15-DSX1 O FF Channel
16-DSX1 O FF Channel

17-DSX1 O FF Channel
18-DSX1 O FF Channel
19-DSX1 O FF Channel
20-DSX1 O FF Channel
21-DSX1 O FF Channel
22-DSX1 O FF Channel
23-DSX1 O FF Channel
24-DSX1 O FF Channel

OFF
OFF

OFF SNMP

S2

S3

OFF
S4

OFF

S5

S6

S7

➸

USING C150 only

When using C100, S5-S7: Off means:
Channel Not Used.

➸

➸

N/A

Sample Applications

6/15/99

Verilink C100 and C150 T1/FT1 CSU/DSU

B-5

Sample Applications

N

C100/C150 T-1 CSU/DSU Connecting Two Routers in LDM mode

C100/C150

The T-1 CSU/DSU’s can be used a Limited Distance Modems (LDMs)
over customer owned four-wire facilities as shown in Figure B-3. The
units are used as LDMs connecting two routers at two different
locations which can be up to 6000 feet apart. In this example, the
routers have RS530 interfaces and are operating at 768,000 bps.

Table B-3 illustrates the switch configuration. Because there is no T-1
carrier involved, ones density requirements do not have to be met so
the units can be programmed for Clear channel (all DS0’s set for 64000
bps). Switch pack 2 position 3 should be On at the local and remote
units to invoke Clear channel. When using the CSU/DSU’s as LDMs in
this application, the local unit’s timing is set to Internal with Switch
pack 2 positions 7 Off and 8 On. Timing is left in the default setting of
Network provides timing at the remote.

Switch pack 4 positions 2 and 3 are both Off for RS530 interfaces.
All positions in Switch pack 5 are On and Switch pack 6 positions 1,2, 3

and 4 are On (12 DS0’s tim es 64000 bps = 768000 bps). Care must be
taken that the selected DS0’s are the same in both units.

The Off position of the DIP switch is the rocker arm of the switch in its
lowest position (down) on the side of the switch closest to the front
panel.

Figure B-3 Using the T-1 C100/C150 CSU/DSUs connecting two routers in LDM mode

ROUTER

Local Site

CI Sync

TEL-LINK

C100/C150

................

T-1 CSU/DSU

Customer
Four-wire

NI

Facilit

Remote Site

TEL-LINK

C100/C150

I

................

T-1 CSU/DSU

CI Sync

ROUTER

B-6

Verilink C100 and C150 T1/FT1 CSU/DSU

6/15/99