Verilink TAC 2130 S-T User Manual

Verilink TAC 2130 User Manual

October 1999 P/N 880-503296-001-A1

TAC

2130-T

STAT

EQPT

NET

Copyright Notice

Trademarks

FCC Requirements

its products or services. Verilink’s sole warranty is contained in its product warranty. The end-user documentation is shipped with Verilink’s products and constitutes the sole specifications referred to in the product warranty. Verilink has made reasonable efforts to verify that the information contained herein is accurate, but Verilink assumes no responsibility for its use or for any infringement of patents or other rights of third parties that may r esult. T he customer is sole ly resp onsible fo r veri fying the suitabil ity of Verilink’s products for its use. Specifications are subject to change without notice.

Verilink is a registered trademark of Verilink Corporation. Access System 2000, WANscope, VeriStats, and FrameStart are trademarks of Verilink Corporation.

Any named products herein are trademarks of their respective companies. This equipment has been tested and found to comply within the limits for a Class A

digital device pursuant to Part 15 of the Federal Communications Commission (FCC) rules. These limits are designed to provide protection against harmful interference in a commercial environment.

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the user manual, can cause harmful interference to radio communications.

There is no guarantee that interference will not occur in a particular installation. If this equipment causes harmful interference to radio or television reception—which can be determined by turning the equipment off and on—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.

This equipment complies with Part 68 of the FCC Rules. On the rear, side or bottom of the unit is a label that contains the FCC registration number and other information. If requested, provide this information to the telephone company.

• All direct connections to the network lines must be made using standard plugs and jacks (compliant wi th Part 68). The following tables list the applicable registration jack universal order codes (USOCs), facility interface codes (FICs), and service order codes (SOCs). These are required to order service from the telco.

For T1 interfaces:

Port ID REN/SOC FIC USOC

1.544 Mbit/s SF

1.544 Mbit/s SF, B8ZS

1.544 Mbit/s ANSI ESF

1.544 Mbit/s ANSI ESF, B8ZS

• If the unit appears to be malfunctioning, inform the telco and disconnect it from the network lines until the source of trouble is determined to be your equipment or the telephone line . If your equipment needs repair, it should not be reconnected until it is repaired.

• The unit has been designed to prevent harm to the network. If the telephone company finds that the equipment is exceeding tolerable parameters, it can temporarily disconnect service. In this case, the telephone company will provide you advance notice if possible.

• If the telephone company alters its equipment in a manner that can affect the use of this device, it must give you warning so that you have the opportunity to maintain uninterrupted service. You will be advised of your right to file a complaint with the FCC.

ii Verilink TAC 2130 User Manual

6.0N 04DU9 -BN 04DU9 -DN 04DU9 -1KN 04DU9 -1SN

RJ-48C jack

Lithium Battery

• No customer is authorized to repair this equipment, regardless of warranty status. All repair s must be performe d by Ve ril i nk or an auth or ized age nt . It is the responsibility of users requiring service to report the need for service to Verilink or to one of our authorized agents.

The lithium battery referred to in the following notices is contained inside the clock chip.

English

Français

DANGER!

The battery can ex plo de i f inco rre ct ly rep lac ed! Repl ace on ly with th e sam e or equi valent type recommen ded by the manufacturer. Di spos e of used batteries according to the manufacturer’s instructions.

DANGER!

To avoid electrical shock in case of f ailur e , th e power supply must be installed by a professional installer. The terminal labeled with the ground symbol ( ) on the power supply must be connected to a permanent earth ground.

CAUTION!

Interconnecting circuits must comply with the requirements of EN60950:1992/A4:1997 Section 6.2 for telecommunications network voltages (TNV) circuits.

ATTENTION!

Une explosion peut se produire si la batterie est remplacée d’ une façon incorrecte! Remplacez-la seulement avec le même modêle de batterie ou un modèle équivalent selon les recommendations de manufacture. Disposez de les batteries usées selon le s instructions de manufacture.

ATTENTION!

Pour éviter choc électrique en cas de insuccès, la provision de pouvoir doit êtré installé par un installeur professionnel. Le terminal de la provision de pouvoir, marqué du symbol de terre, ( ) doit connecté à un circuit de terre permanent.

PRUDENT!

Les circuit s doi vent êtré i nter conn ectés de mani ère à ce qu e l’ é quipe ment contin ue a êtré en agrément avec “EN60950:1992/A4:1997, Section 6.2, pour les circuits de voltage de liaisons d’ échanges (réseau) par les télécommunications (TNV), ” après les connections de circuits.

Españole

Deutsch

ATTENCION!

La bateria puede explotar s i s e reemplaza incor rectamente. Ree mp l a c e la bateria con el mismo tipo de bateria ó una equivalente recomendada por el manufacturero. Disponga de las baterias de acuerdo con las instrucciones del manufacturero.

ATTENCION!

Para evitar contacto con circuitos que electrocutan, la fuente de alimentación debe ser instalada por un técnico profesional. La terminal de la fuente de alimentación marcada con el símbolo de tierra ( ) debe ser conectada a un circuito de vuelta por tierra permanente.

PELIGRO!

Circuitos que se interconectan a la red de telecomunicaciones deben hacerse de tal manera que cumplan con los requisitos estipulados en las especificaciones “EN60950:1992/ A4:1997 , Secció n 6.2, pa ra los vo ltages de c ircuit os interco nnectado s a la Red de Telecomunicaciones (TNV),” despues de terminar las connecciones entre los circuitos.

VORSICHT!

Explosionsgefahr bei unsachgemäßem Ersetzen der Batterie! Batterie gleichen Typs und gleich er Qualität benutzen, wie vom H ersteller empfohlen. Entsorgung der Batt erie nach Anweisung des Herstellers!

Verilink TAC 2130 User Manual iii

VORSICHT, GEFAHR!

Um keinen Schlag zu erhalten beim Versagen der electrische n Anl a ge, muss der Stromanschluss von ei nem Elektriker vorge nommen werden. Der el ektrische Pol, versehen mit dem Erdsymbol ( ) muss am Stromanschluss permanent geerdet sein.

VORSICHT!

Schaltungen, die in den Geräten zusammengeschaltet sind, müssen weiterhin den Vorschriften EN60950:1992/A4:1997, Absatz 6.2 für Telecommunications Netz Spannung (TNV) Schaltkreize entsprechen.

Canadian

Requirements

Safety Precautions

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicabl es aux appareils numériques (de la class A) prescrites dans le Règlement sur le brouill age radi oélect riq ue éd icté par le mi nist ère des Communi ca tion s du Canada.

The Industry Canada label indentifies CS-03 certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements. Industry Canada does not guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly (telephone extension cord). The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations.

Repairs to certifi ed equipmen t should be made by a n authoriz ed Canad ian maint enance facility designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

Caution: Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate.

This equipment is intended to be installe d only in a Restricted Access Location that meets the following criteria:

• Access can only be gained by service personnel or users who have been instructed about the reasons for the restrictions applied to the location and about any precautions that must be taken.

• Access can only be gained through the use of a lock and key or other means of security, and is controlled by the authority responsible for the location.

When handling this equipment, follow these basic safety precautions to reduce the risk of electric shock an d in ju ry :

• Follow all warnings and instructions 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 cloth slightly dampened with water.

• 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.

• 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.

iv Verilink TAC 2130 User Manual

• 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.

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

• When the power supply cord or plug is damaged or frayed.

• If liquid has been spilled into the product.

• If the product has been exposed to rain or water.

• If the product has been dropped or if the cabinet has been damaged.

Product Warranty

Customer Service

Publications Staff

Verilink’s product warranty covers repair or replacement of all equipment under normal use for a five-year period from date of shipment. Replacement products may be new or reconditioned. Any replaced or repaired product or part has a ninety (90) day warranty or the remainder of the initial warranty period, whichever is longer. Our in-house Repair Center services returns within ten working days.

Verilink offers the following services:

System Engineers at regional sales offices for network design and planning

•

assistance (800) 837-4546 Technical Assistance Center for free 24x7 telephone support during

•

installation, maintenance, and troubleshooting (800) 285-2755 and support@verilink.com

To return a product, it must be assigned a Return Materials Authorization

•

(RMA) number before sending it to Verilink for repai r (800) 926-0085, ext. 2282

Maintenance contracts and leasing plans (800) 837-4546

•

Technical Training on network concepts and Verilink products (800) 282-2755

•

and training@verilink.com Web site (www.verilink.com)

•

This manual was written and illustrated by Steve Rider. Contributing Writers and Editors: Dave Fradelis, David Gardner, Marie Metivier, and Barbara Termaat.

Verilink TAC 2130 User Manual v

vi Verilink TAC 2130 User Manual

Overview

This user manual describes the TAC 21 30, TAC 2130-S and TAC 2130-T Integrated T1 DSU/CSU modules, components of Verilink’s Access System 2000 (AS2000) platform.

This manual assumes you are alread y familiar with the AS2000 product line. Where appropriate, the text refers you to a specific Access System 2000 manual for greater detail.

The TAC 2130 series are integrated T1 CSU/DSU modules that are managed by one of five node controller modules. Because they integrate CSU and DSU functions into one module, the TAC 2130, TAC 2130-S and TAC 2130-T are also referred to as IDCSU (Integrated DSU/CSU) modules.

Management Options

Unlike many other AS2 000 application modules, the IDCSU does not use any shelf midplane to exchange user data with other modules. All DS0 timeslots in the T1 datastream received by the IDCSU are either routed to the single data port or not used.

The IDCSU uses industry standard methods of channellizing data into DS0 timeslots, and supports full or fractional T1 applications.

Refer to the followin g r e l a ted AS2000 manuals:

•

AS2000, The Basics for information on physical installation of

shelves, modules, and power supplies.

•

Node Manager for Windows 95 User Manual, documents the

Verilink network management program designed to operate under Windows 95™ or Windows NT™.

•

Access Manager 2000 User Manual, documents the Verilink

network management program designed to operate under Windows™ 3.1 (on ly).

The IDCSU must be managed by one of five Verilink node controller modules; the NCC 2020, NCC 2130, SCC 2020, SCC 2130 or NCM

2000. With any of these controllers you can configure the IDCSU through an ASCII terminal port (Craft interface).

Verilink TAC 2130 User Manual

1

-1

Overview

Depending on the controll er module used , you can also manage the IDCSU using one of two Verilink node management programs, or an industry standard SNM P manager. Table 1-1 lists the ways to ac cess the IDCSU with the various co ntrollers and programs.

Table 1-1 Node Access Methods

Node Controller

Module Craft Interface Node Management Programs

NCM 2000 Use port labelled

NCC 2020 NCC 2130

SCC 2020 SCC 2130

Types of Node

Controllers

LOCAL

.

Use port labelled

CRAFT

.

Use port labelled

CRAFT

.

An AS2000 node requires only one node controller module. Additional applications requiring a single data port per T1 can use IDCSU modules. Verilink’s family of AS2000 node controllers includes the following modules:

•

The NCM 2000 is an SNMP node controller. It does not co ntain any type of T1 CSU. See the NCM 2000 User Manual for full details.

•

The NCC 2020 is a TAC 2010 T1 CSU with the ad dition of a node controller function. See the NCC 2020 User Manual for full details.

•

The NCC 2130 is a TAC 2130 IDCSU (Integrated T1 CSU/DSU) with the addition of a node controller function. See the NCC

2130 User Manual for full details.

•

The SCC 2020 is a TAC 2010 T1 CSU with the addi tion of an SNMP node controller function. See the SCC 2020 User Manual for full details.

Verilink Node Manager or any SNMP manager.

Verilink Access Ma na ger 2000 or Verilink Node Manage r.

Verilink Node Manager or any SNMP manager.

Module Differences

1

-2

•

The SCC 2130 is a TAC 2130 IDCSU (Integrated T1 CSU/ DS U) with the addition of an SNMP node controller function. See the

SCC 2130 User Manual for full details.

There are three different versions of the IDCSU.

•

The original TAC 2130 has a bantam jack field that is not used. It supports external timi ng, TIU 2850 timing and tail circui t timing. The TA C 21 3 0 supports thr ee ty pe s o f syn c h r o n o us serial interfaces: V.3 5, EIA 53 0, a nd RS -422 . T he in ter face type is selected by choosing from among four different rear connector modules.

Verilink TAC 2130 User Manual

IDCSU Components

Overview

•

The TAC 2130-S has the unus ed bantam jack fi eld and modular connector removed. It can be used with t he same fo ur type s of rear connector modules and support s the same inter faces. The TAC 2130-S does not support external timing, tail-circuit timing, or TIU 2850 timing.

•

The TAC 2130-T has the unused bantam jack field and modular connector removed. It is used only with one of two special V.35 rear conne ctor modules—the CDM 2035-T and CDM 2135-T. The TAC 2130-T does not support external timing, tail-cir cuit timing, or TIU 2850 timing.

The complete IDCSU assembly consists of an application module and a rear connector module (CDM), together occupying a single shelf-slot position accessible from the front and back of the AS2000 shelf. The CDM is installed from the rear of the shelf into the backplane. The IDCSU module is installed from the front. The CDM is always installed first and removed last. The IDCSU front module is installed last and removed first.

IDCSU Front Panel

The IDCSU front panel provides LED indicators for visual alarm indication. It is equipped with dual ejector levers to aid installation and removal of the module. The following figures illustrate the front panel of the three types of IDCSU modules.

Figure 1-1 TAC 2130 Front Panel

TAC 2130

NOTE:

Equipment, CSU Status, an Network LEDs

STAT

EQPT

Modular jack (not used)

NET

EQPT

IN OUT

Signal access jacks (not used)

NET

IN OUT

MON

IN OUT

The bantam-type si gnal access jacks are present onl y on the TAC 2130. They provide access to internal signal s within the module. They do NOT reflect line si gna ls . This jack fi eld should not be use d .

Verilink TAC 2130 User Manual

1

-3

Overview

Figure 1-2 TAC 2130-S Front Panel

TAC

2130-S

Figure 1-3 TAC 2130-T Front Panel

Equipment, CSU Status, an Network LEDs

NET

STAT

EQPT

Equipment, CSU Status, an Network LEDs

TAC

2130-T

Rear Connector Modules

The IDCSU is installed with a rear connector module that provides ports for various interfac e requirements. Table 1-2 lists the

EQPT

connector modules that can be paired with the TAC 2130, TAC 2130-S, and TAC 2130-T fro nt mo dules.

NOTE:

The TAC 2130-T front module is used only with a CDM 2035T or CDM 2135-T rear co nnector module. Front and rear modules ending with “-T” are exclusively used together.

Table 1-2 IDCSU Rear Connector Modules

Front

Module

TAC 2130 or TAC 2130-S

Rear

Connector

Module

Data Port Connector /

Electrical Interface

CDM 2035 Mini D-Sub 26 : V.35 RJ-48C not used not used CDM 2049 Mini D-Sub 26 : RS-449/EIA 530 RJ-48C not used not used

NET

STAT

T1 Network

Port

Connector

Management

Port In

Management

Port Out

CDM 2135 Mini D-Sub 26 : V.35 DB-15 not used not used CDM 2149 Mini D-Sub 26 : RS-449/EIA 530 DB-15 not used not used

TAC 2130-T CDM 2035-T Winchester 34-pin : V.35 RJ-48C none none

CDM 2135-T Winchester 34-pin : V.35 DB-15 none none

1

-4

Verilink TAC 2130 User Manual

Overview

TAC 2130 and TAC

2130-S CDMs

The following illustrations show the four rear connector modules used with the TAC 2130 and TA C 2130-S.

Figure 1-4 CDM 2035 Back Panel (V.35)

V.35

NETWORK

RJ-48C

Female

T1

Network

EXT TIMING

DIN

External

Timing female

DATA

Mini D-Sub 26-pin

V.35 Data Port

Figure 1-5 CDM 2049 Back Panel (RS-449/EIA 530)

RS449/EIA530

NETWORK

RJ-48C

Female

T1

Network

EXT TIMING

DIN

External

Timing

DATA

Mini D-Sub 26-pin

RS-449 Data Port

female

ALARM RELAY

NO COM NC

Alarm

Relay

Connector

ALARM RELAY

NO COM NC

Alarm

Relay

Connector

MANAGEMENTMANAGEMENT

EXTENSION PORT IN

DB-9 male

Management

Port Out

(not used)

EXTENSION PORT IN

DB-9 male

Management

Port Out

(not used)

DB-9 male

Management

(not used)

MANAGEMENTMANAGEMENT

DB-9 male

Management

(not used)

Port In

2035

2049

CDM

Figure 1-6 CDM 2135 Back Panel (V.35)

V.35

NETWORK DATA

DB-15

Female T1 Network

EXT TIMING

DIN

External

Timing

Mini D-Sub 26-pin

V.35 Data Port

Figure 1-7 CDM 2149 Back Panel (RS-449/EIA 530)

RS449/EIA530

NETWORK DATA

DB-15

Female T1 Network

EXT TIMING

DIN

External

Timing

Mini D-Sub 26-pin

RS-449 Data Port

female

ALARM RELAY

NO COM NC

Alarm

Relay

Connector

ALARM RELAY

NO COM NC

Alarm

Relay

Connector

EXTENSION

DB-9 male

Management

Port Outfemale

(not used)

EXTENSION

DB-9 male

Management

Port Out (not used)

MANAGEMENTMANAGEMENT

PORT IN

DB-9 male

Management

Port In

(not used)

MANAGEMENTMANAGEMENT

PORT IN

DB-9 male

Management

Port In

(not used)

CDM

2135

CDM

2149

Verilink TAC 2130 User Manual

1

-5

Overview

Adapter Cables

Rear connector modules for the TAC 2130 and TAC 2130-S have a mini D-Sub 26 pin connector for the data port. A short adapter cable is also provided. The adapter cable, sometimes called a pigtail cable, presents the typical connector for the specific electrical interface. See Table 1-3 for a cross reference of the adapter cables.

Table 1-3 Adapter Cables Used With TAC 2130 and TAC 2130-S

Cable P/N

Interface Used With CDM Types Connectors

458-501594-001 ITU V.35 CDM 2035, CDM 2135 Mini D-Sub 26 - Winchester 34-pin

Electrical

458-502059-001 RS-449

CDM 2049; CDM 2149 Mini D-Sub 26 - DB-37

(RS-422)

458-502045-001 EIA 530 CDM 2049; CDM 2149 Mini D-Sub 26 - DB-25

Rear Connector Modules for TAC 2130-T

Figure 1-8 and Figure 1-9 illustrate the rear connector modules

used only with a TAC 2130-T front module. Since these connector modules have Winchester 34-pi n V.35 connectors, adapter cables are not required for dat a port connections.

TAC 2130-T front modules are used exclusively with CDM 2035-T or CDM 2135-T type r e ar modules. These rear modules can only be used with a TAC 2130-T.

Figure 1-8 CDM 2035-T Back Panel

311-10XXXX-001

REV *

NETWORK

RJ48-C Network

EXT TIMING

8-pin DIN

(not used)

ALARM RELAY

NO COM NC V.3 5 D ATA P O R T 1

Alarm Relay

Connector

Winchester 34-pin

Female Data

2035-T

CDM

Figure 1-9 CDM 2135-T Back Panel

311-10XXXX-001

REV *

NETWORK

DB-15 Network

1

-6

EXT TIMING

8-pin DIN

(not used)

ALARM RELAY

NO COM NC V.3 5 D ATA P O R T 1

Alarm Relay Connector

Verilink TAC 2130 User Manual

Winchester 34-pin

Female Data

2135-T

CDM

Overview

Port Usage

Table 1-4 describes the usage of the ports on the IDCSU front and

rear modules.

Table 1-4 IDCSU Connector Ports

Port Located Usage

Modular Front The modular connector on the front of the TAC 2130 module is not used. To

Bantam Jacks Front The bantam jacks are present only on the TAC 2130. They will never reflect

Network Rear Connect the T1 line to this port. Data Rear Connect the supplied adapter cable, which in turn connects to the customer

Management Port In

Management Extension

Ext Timing Rear External timing is supported in the TAC 2130, not in the TAC 2130-S or TAC

Alarm Relay Rear Connect an external alarm system which triggers on either a relay closure

Rear Some of the rear connector modules have management ports which are not

configure an IDCSU, connect to the controller module.

actual signals on the T1 circuit. Do not use these bantam jacks.

data equipment. The DTE must support the synch ron ous se ria l inte rf ac e type for which the selected CDM is designed.

used when the front modul e i s a TAC 2130 or TAC 2130-S.

2130-T. Connect an optional external clock source, using either a TTL level (0 to +5V) or balanced (RS-422) signal. The clock must be at 1. 544 Mbit/s.

(using NO and COM leads) or open (using NC and COM leads). The relay in the IDCSU module supports Form C relay specifications.

Verilink TAC 2130 User Manual

1

-7

Overview

1

-8

Verilink TAC 2130 User Manual

Chapter

2

Figure 2-1 Example Configuration

Quick Set-Up

This section details a quick, step-by-step procedure for configuring the TAC 2130-T. For this quick configuration guide, the following assumptions are made:

•

That you are using a TAC 2130-T with a fractional ESF/B8ZS T1 circuit.

•

That you are adding the TAC 2130-T to slot 10 of an existing MLS 2200 shelf.

•

That the node is controlled by an NCC 2020 module located in slot 1.

•

That timeslots one through twelve are to be used for the one available data port o n the TAC 2130-T.

•

That you are using a Cisco™ router for a connection to the Internet.

TAC 2130-T

Router

Cloud

It is most likely that this procedure will not match your configuration exactly. Use this chapter as a guide to the proces s of installing your equipment. Chapter 3 provides complete details on configuration covering all selectable options.

Verilink TAC 2130 User Manual

2

-1

Quick Set- Up

Connect to Craft Port

Connect the modular (RJ-11) end of the Craft cable to the port labeled

CRAFT

on the front panel of the node controller module. The node controller module is usually installed in slot 1 of shelf 1. Connect the other end of the Craft cable to your PC or terminal.

Set your terminal , o r terminal program, to 19.2 kbit/s, 8 data bits, no parity, one stop bit, and no flow control.

Log In

1. Press

2. The prompt

3. Initially there is no password, press E

NTER

E

.

YOUR PASSWORD?

YOUR PASSWORD? is displayed.

YOUR PASSWORD? YOUR PASSWORD?

NTER

.

4. The Main Menu for the node controller module is displayed. See Figure 2-2.

Figure 2-2 NCC 2020 Main Menu

-- VERILINK NCC NODE CONTROLLER at[1,1]: FW Rev 4.75 --

-- VERILINK NCC NODE CONTROLLER at[1,1]: FW Rev 4.75 -- -- VERILINK NCC NODE CONTROLLER at[1,1]: FW Rev 4.75 -SITE NAME: Tech Pubs TAC 2130-T

SITE NAME: Tech Pubs TAC 2130-T

SITE NAME: Tech Pubs TAC 2130-T SITE NAME: Tech Pubs TAC 2130-T NODE ID: 408

NODE ID: 408

NODE ID: 408NODE ID: 408 <- SLOT ->

<- SLOT ->

<- SLOT -> <- SLOT -> SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13

SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13

SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13 SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13 1 M [C] D C D C D C D D I

1 M [C] D C D C D C D D I

1 M [C] D C D C D C D D I 1 M [C] D C D C D C D D I 2

2

2 2 3

3

3 3 4

4

4 4 KEY: C=CSU, D=DIU, F=DIU/DDS, B=DIU/DBU, R = SRD, I=IDCSU, T=TU, S=SMDS, V=VCU

KEY: C=CSU, D=DIU, F=DIU/DDS, B=DIU/DBU, R = SRD, I=IDCSU, T=TU, S=SMDS, V=VCU

KEY: C=CSU, D=DIU, F=DIU/DDS, B=DIU/DBU, R = SRD, I=IDCSU, T=TU, S=SMDS, V=VCU KEY: C=CSU, D=DIU, F=DIU/DDS, B=DIU/DBU, R = SRD, I=IDCSU, T=TU, S=SMDS, V=VCU

S) shelf/slot D) diagnostics

S) shelf/slot D) diagnosticsS) shelf/slot D) diagnostics N) near element O) node administration

N) near element O) node administration

N) near element O) node administrationN) near element O) node administration F) far element M) monitor alarms (OFF)

F) far element M) monitor alarms (OFF)

F) far element M) monitor alarms (OFF)F) far element M) monitor alarms (OFF) C) configuration A) alm to net mgr (OFF)

C) configuration A) alm to net mgr (OFF)

C) configuration A) alm to net mgr (OFF)C) configuration A) alm to net mgr (OFF) P) performance X) log off

P) performance X) log off

P) performance X) log offP) performance X) log off

[1,1] NEAR TAC 2010 >

[1,1] NEAR TAC 2010 >[1,1] NEAR TAC 2010 >

Select the IDCSU

To configure the TAC 2130- T I DCS U you must first select it. The Shelf/Slot command is used to select a module.

NTER

Type “S” and press E

. The prompt for selecting a module appears. Type “1,10”. The prompt line reflects the slot selection:

[1,10] NEAR IDCSU 2130 (UPDATE)>

[1,10] NEAR IDCSU 2130 (UPDATE)>[1,10] NEAR IDCSU 2130 (UPDATE)>

2

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Verilink TAC 2130 User Manual

Quick Set-Up

NOTE:

Whenever the word UPDATE appears in the command line prompt, it indicates that some information has changed since the screen was last refreshed. To refresh the screen with

NTER

E

.

IDCSU

current information, press

Type “C” and press E

NTER

. The Configuration Menu is presented.

Configuration

Figure 2-3 TAC 2130-T Configuration Menu

IDCSU CONFIGURATION FW/HW Rev..1.25/0.8

IDCSU CONFIGURATION FW/HW Rev..1.25/0.8 IDCSU CONFIGURATION FW/HW Rev..1.25/0.8 |-----------------------|

|-----------------------|

|-----------------------| |-----------------------|

-------<< dte <<-------| T) alm thld DEF |-------<< net <<-------

-------<< dte <<-------| T) alm thld DEF |-------<< net <<--------------<< dte <<-------| T) alm thld DEF |-------<< net <<------ M) mode 64K | | W) framing ESF

M) mode 64K | | W) framing ESF

N) scramble OFF | | F) format B8ZS

C) clocking ST | | J) jitt buf 40 BITS

G) los lead NONE | | L) lbo 0 DB

G) los lead NONE | | L) lbo 0 DB G) los lead NONE | | L) lbo 0 DB

------->> dte >>-------| I) idle code ONES |------->> net >>-------

------->> dte >>-------| I) idle code ONES |------->> net >>-------------->> dte >>-------| I) idle code ONES |------->> net >>------ |-----------------------| Z) density 12%+80z

|-----------------------| Z) density 12%+80z

|-----------------------| Z) density 12%+80z |-----------------------| Z) density 12%+80z

lead toggles: DTR) DSR) RTS) CTS) DCD)

lead toggles: DTR) DSR) RTS) CTS) DCD) lead toggles: DTR) DSR) RTS) CTS) DCD) forced leads: Y N N N N

forced leads: Y N N N N

forced leads: Y N N N N forced leads: Y N N N N

D) select DS-0 (1-24) B) timing NET

D) select DS-0 (1-24) B) timing NET D) select DS-0 (1-24) B) timing NET 01 02 03 04 05 06 07 08 09 10 11 12 P) prm NONE

01 02 03 04 05 06 07 08 09 10 11 12 P) prm NONE

01 02 03 04 05 06 07 08 09 10 11 12 P) prm NONE 01 02 03 04 05 06 07 08 09 10 11 12 P) prm NONE 13 14 15 16 17 18 19 20 21 22 23 24 C1-C7) canned config

13 14 15 16 17 18 19 20 21 22 23 24 C1-C7) canned config

13 14 15 16 17 18 19 20 21 22 23 24 C1-C7) canned config 13 14 15 16 17 18 19 20 21 22 23 24 C1-C7) canned config O) poll far end (ON)

O) poll far end (ON)

O) poll far end (ON) O) poll far end (ON) A) Alarm ENABLE

A) Alarm ENABLE

A) Alarm ENABLE A) Alarm ENABLE V) Data Invert No

V) Data Invert No

V) Data Invert No V) Data Invert No

[1,1] NEAR IDCSU 2130 >

[1,1] NEAR IDCSU 2130 >[1,1] NEAR IDCSU 2130 >

The factory default values for the TAC 2130-T are shown in Figure

2-3. The network interface, shown at top right, is set for ESF

framing and B8ZS line coding. The DTE interface, shown at top left, is set for 64K per DS0 and LOS

(Loss of Signal) detection is off.

1. Type “G” and press E appears: los lead (1) dtr (2) rts (3) none >

NTER

E

los lead (1) dtr (2) rts (3) none >. Type “2” and press

los lead (1) dtr (2) rts (3) none >los lead (1) dtr (2) rts (3) none >

to use Request To Send. This means that the IDCSU will

NTER

, the prompt for LOS lead selection

indicate an alarm condition whenever it does not see RTS held “high” by the router. The EQPT LED begins blinking in a red, red, green pattern because the router is not connected yet.

Verilink TAC 2130 User Manual 2

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Quick Set- Up

2. By default, all 24 timeslots of the T1 are assigned to the data port. For this example, only the first twelve are used. Type “D” and press E

ENTER CHANNELS

ENTER CHANNELS. Type “1-12” and press E

ENTER CHANNELSENTER CHANNELS

NTER

. The prompt used to select timeslots appears,

NTER

.

3. The default value for the density enforcement selection is not correct for a B8ZS T1. Use the ZZZZ command, select “1” and press

NTER

E

to change it to

. B8ZS was developed to eliminate

NONE

the need for density enforcement.

NOTE:

For the remainder of this chapter you will not be instructed to press

NTER

E

each time. Generally, the

NTER

E

key is used

after each command or value entry.

4. Cisco™ routers wrap the transmit clock signal provided by the DSU back toward the DSU on the optional third clock pair, Terminal Timing. Whenever the DTE offers this feature, it should be used, since the clock on the TT pair will be perfectly in phase with the Transmit Data provided by the DTE. Use the

C

C command and choose “3” for Terminal Timing.

C C

5. There are no more changes required to the default IDCSU configuration for this example. Use the XXXX command to return to the TAC 2130-T Main Me nu .

The T1 circuit and DTE should now b e co nnected. When the router cable is connected to the IDCSU, the EQPT LED

stops blinking and is lit steady green. Within 15 seconds of connecting the T1 circuit, the NET LED on the

TAC 2130-T should change from red to green. If it does not, the Diagnostics Menu can be used for troubleshooting. See Chapter 5 for more information on diagnostics.

When the IDCSU has been connected to the T1 circuit for at least fifteen minutes, performance statistics will be available under the Performance Menu. See Chapter 4 for more details.

Resetting the STAT LED

2

-4

The configuration of the TAC 2130-T is covered in detail in Chapter

3 of this manual.

The STAT LED normally remains red for up to fifteen minut e s af ter all alarm conditions are cleared. To force the STAT LED to assume its typical condition (off) follow these steps:

1. From the Main Menu, use the PPPP command to sele ct th e Performance Menu.

2. Use the RRRR command to reset the registers (all information stored in the ESF registers for the preceeding 24 hours is cleared).

3. Use the XXXX command to return to the Main Menu.

Verilink TAC 2130 User Manual

Quick Set-Up

4. Use the DDDD command to select the Diagnostics Menu.

5. Use the ZZZZ command to reset alarms. The STAT LED wi ll extinguish if there are no current alarms. If there are alarms, they will be shown on the Diagnostics Menu.

Verilink TAC 2130 User Manual 2

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Quick Set- Up

2

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Verilink TAC 2130 User Manual

Chapter

3

Configuration

This chapter covers configuring the CSU/DSU portion of the TAC 2130, TAC 2130-S, and TAC 2130-T IDCS U modules. Use of th e Craft interface and the front panel thumbwheel switches is documented in this chapter.

Using the Craft Interface

To access the Craft interface, connect a terminal or a computer running a terminal pr ogram to the port la beled front panel of the node controller module.

Craft Port Terminal Setup

Set your terminal parameters to: Data Rate : 19.2 kbit/s Word Size : 8 bits

CRAFT

or

LOCAL

on the

Parity : None Stop Bits : One Flow Control: None The Verilink Craft interface does not assert any control leads. Verilink provides two different types of Craft cable. Both versions

of the Craft cable have an RJ-11 modular connector at one end. The original cable has a female DB-25 connector at the other end and a more recent version has a DB-9 female connector. Connect the RJ11 modular connec tor to the port la beled of the node control ler module.

The original Craft cable pinout is as follows:

Table 3-1 Verilink Craft Cable P/N 458-501788-008

DB-25 female RJ-11 modular Usage

pin 2 pin 3 Transmit Data pin 3 pin 4 Receive Data pin 7 pin 5 Signal Ground

An alternative Craft cable uses DB-9 and RJ-11 connectors. It is wired according to the pinout shown in Table 3-2.

CRAFT

or

LOCAL

on the front

Verilink TAC 2130 User Manual 3

-1

Configuration

Table 3-2 DB-9 Craft Cable P/N 458-102119-008

DB-9 female RJ-11 modular Usage

pin 3 pin 3 Transmit Data pin 2 pin 4 Receive Data pin 5 pin 5 Signal Ground

Log In

Log in to the node controller module. If you need details on how to log in, refer to the user manual for your NCC, SCC, or NCM module.

The top or Main Menu is displayed.

NOTE:

The example menus in this manual are from an NCC type node controller module. Similar screens are presented when the node controller is an NCM or SCC type.

Figure 3-1 Main Menu

-- VERILINK NCC NODE CONTROLLER at[1,1]: FW Rev 4.75 --

-- VERILINK NCC NODE CONTROLLER at[1,1]: FW Rev 4.75 -- -- VERILINK NCC NODE CONTROLLER at[1,1]: FW Rev 4.75 -SITE NAME: Tech Pubs NCC 2020

SITE NAME: Tech Pubs NCC 2020

SITE NAME: Tech Pubs NCC 2020 SITE NAME: Tech Pubs NCC 2020 NODE ID: 408

NODE ID: 408

NODE ID: 408NODE ID: 408 <- SLOT ->

<- SLOT ->

<- SLOT -> <- SLOT -> SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13

SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13

SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13 SHELF 1 2 3 4 5 6 7 8 9 10 11 12 13 1 M [C] D C D C D C D D I

1 M [C] D C D C D C D D I

1 M [C] D C D C D C D D I 1 M [C] D C D C D C D D I 2

2

2 2 3

3

3 3 4

4

4 4 KEY: C=CSU, D=DIU, F=DIU/DDS, B=DIU/DBU, R = SRD, I=IDCSU, T=TU, S=SMDS, V=VCU

KEY: C=CSU, D=DIU, F=DIU/DDS, B=DIU/DBU, R = SRD, I=IDCSU, T=TU, S=SMDS, V=VCU

KEY: C=CSU, D=DIU, F=DIU/DDS, B=DIU/DBU, R = SRD, I=IDCSU, T=TU, S=SMDS, V=VCU KEY: C=CSU, D=DIU, F=DIU/DDS, B=DIU/DBU, R = SRD, I=IDCSU, T=TU, S=SMDS, V=VCU

S) shelf/slot D) diagnostics

S) shelf/slot D) diagnosticsS) shelf/slot D) diagnostics N) near element O) node administration

N) near element O) node administration

N) near element O) node administrationN) near element O) node administration F) far element M) monitor alarms (OFF)

F) far element M) monitor alarms (OFF)

F) far element M) monitor alarms (OFF)F) far element M) monitor alarms (OFF) C) configuration A) alm to net mgr (OFF)

C) configuration A) alm to net mgr (OFF)

C) configuration A) alm to net mgr (OFF)C) configuration A) alm to net mgr (OFF) P) performance X) system log off

P) performance X) system log off

P) performance X) system log offP) performance X) system log off

[1,1] NEAR TAC 2010 >

[1,1] NEAR TAC 2010 >[1,1] NEAR TAC 2010 >

3

-2

From this menu you can navigate from card to card, or choose various option menus for the current card .

The Main Menu commands ar e deta ile d in Table 3-3.

Verilink TAC 2130 User Manual

Table 3-3 NCC 2020 Main Menu Commands

Menu Option Description Instructions

Configuration

S) shelf/slot Used to navigate from module

N) near element Selects the local node. Used to return from a far element session. F) far element Selects the CSU at the remote

C) configuration Selects the

P) performance Selects the D) diagnostics Selects the O) node

administration M) monitor alarms Toggles on/off the monitor

to module within a node.

end of the T1 circuit connected to the current module.

Functions only if the T1 circuit is ESF and the Facilities Data Link (FDL) has continuity end-to-end.

Configuration

.

Menu

Performance Menu Diagnostics Menu

Selects the

Administration Menu

alarms function.

Node

.

Enter the shelf number and slot number of the desired module, use a comma delimiter (1,10).

With an NCC—only the CSU module connected to the T1 circuit is available. You can not navigate from module to module within the remote node.

With an SCC running version 2.06 or newer firmware—you can navigate from slot to slot in the remote node.

With an NCM controller—entire remote nodes are selected using the Node Selection menu.

See Figure 3-2 and Table 3-4 below.

.See Chapter 4 of this manual.

.See Chapter 5 of this manual.

See the manual for the NCC, SCC or NCM node controller you are using.

If monitor alarms is ON, alarm messages are displayed on the Craft interface as they occur.

No alarm messages are displayed if monitor alarms is OFF.

A) alm to net mgr Enables or disables sending

alarms to a network management program.

X) log off Exits the

Main Menu

. The user is logged out.

The Configuration Menu

In the Main Menu shown in Figure 3-1, the element [C] is selected. The letter “C” is defined in the Key as a CSU. The TAC 2130, TAC 2130-S, and TAC 2130-T are all identified with the letter “I”, for IDCSU. In the ex a m pl e i n Figure 3-1 the IDCSU is in slot 10.

Each node (group of shelves connected together) typically has only one node controller card. One type of node controller is an NCC 2130, which consists of a TAC 2130 with added node contro ller functions. An SCC 2130 is a TAC 2130 to which an SNMP node controller has been added.

Select OFF if there is no path to a network management program.

Select ON if you are using either Access Manager 2000 or Node Manager and this NCC module is to send alarms to the network manager PC.

Verilink TAC 2130 User Manual 3

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Configuration

Therefore, an “I” located in the slot 1 shelf 1 position would represent an NCC 2130 or SCC 2130, while an “I” located at some other position will represent a TAC 2130.

Select the IDCSU by using the Shelf/Slot command. Then use the command “C”, for the IDCSU Configuration Menu.

Figure 3-2 IDCSU Configuration Menu

IDCSU CONFIGURATION FW/HW Rev..1.25/0.8

IDCSU CONFIGURATION FW/HW Rev..1.25/0.8 IDCSU CONFIGURATION FW/HW Rev..1.25/0.8 |-----------------------|

|-----------------------|

|-----------------------| |-----------------------|

-------<< dte <<-------| T) alm thld DEF |-------<< net <<-------

-------<< dte <<-------| T) alm thld DEF |-------<< net <<--------------<< dte <<-------| T) alm thld DEF |-------<< net <<------ M) mode 64K | | W) framing ESF

M) mode 64K | | W) framing ESF

N) scramble OFF | | F) format B8ZS

C) clocking ST | | J) jitt buf 40 BITS

G) los lead RTS | | L) lbo 0 DB

G) los lead RTS | | L) lbo 0 DB G) los lead RTS | | L) lbo 0 DB

------->> dte >>-------| I) idle code ONES |------->> net >>-------

------->> dte >>-------| I) idle code ONES |------->> net >>-------------->> dte >>-------| I) idle code ONES |------->> net >>------ |-----------------------| Z) density 12%+80z

|-----------------------| Z) density 12%+80z

|-----------------------| Z) density 12%+80z |-----------------------| Z) density 12%+80z

lead toggles: DTR) DSR) RTS) CTS) DCD)

lead toggles: DTR) DSR) RTS) CTS) DCD) lead toggles: DTR) DSR) RTS) CTS) DCD) forced leads: Y N N N N

forced leads: Y N N N N

forced leads: Y N N N N forced leads: Y N N N N

D) select DS-0 (1-24) B) timing NET

D) select DS-0 (1-24) B) timing NET D) select DS-0 (1-24) B) timing NET 01 02 03 04 05 06 07 08 09 10 11 12 P) prm NONE

01 02 03 04 05 06 07 08 09 10 11 12 P) prm NONE

01 02 03 04 05 06 07 08 09 10 11 12 P) prm NONE 01 02 03 04 05 06 07 08 09 10 11 12 P) prm NONE 13 14 15 16 17 18 19 20 21 22 23 24 C1-C7) canned config

13 14 15 16 17 18 19 20 21 22 23 24 C1-C7) canned config

13 14 15 16 17 18 19 20 21 22 23 24 C1-C7) canned config 13 14 15 16 17 18 19 20 21 22 23 24 C1-C7) canned config O) poll far end (ON)

O) poll far end (ON)

O) poll far end (ON) O) poll far end (ON) A) Alarm ENABLE

A) Alarm ENABLE

A) Alarm ENABLE A) Alarm ENABLE V) Data Invert No

V) Data Invert No

V) Data Invert No V) Data Invert No

[1,10] NEAR IDCSU 2130 >

[1,10] NEAR IDCSU 2130 >[1,10] NEAR IDCSU 2130 >

Configuration Menu Commands

Commands and current settings for the network interfac e are shown on the right side of the ASCII drawing on the IDCSU Configuration Menu. V alues and options for the synchronous serial port (DTE interface) are shown on the left side.

Table 3-4 below describes the IDCSU Configuration Menu options:

3

-4

Verilink TAC 2130 User Manual

Table 3-4 IDCSU Configuration Commands

Menu Option Description Instructions

Configuration

W) framing Selects T1 framing

mode for the network port.

Must match the type of T1 installed by the network service provider.

F) format Selects the T1

network line code. Must match the T1 being connected.

J) jitt buf Selects the size of the

jitter buffer, in bit s , on the network side of the IDCSU.

L) lbo Line build out is used

to reduce the signal strength being sent to the T1 network.

New T1 circuits installed by a telephone company in the USA will have a “smart jack”.

1(SF)—a D4 T1. 2(ESF)—an ESF T1. 3(ZBTSI)—a Zero Bit Time Slot In sertion T1 (there are no

ZBTSI T1 circuits, do not use this option).

1(AMI)—an AMI T1. 2((B8ZS)—a B8ZS T1.

1(16)—Sets the jitter buffer to 16-bit depth. 2(40)—Sets the default value of 40-bit jitter buffer. Larger buffers are more resistant to a jittery signal, sma ller

buffers introduce less delay. (1) 0 db—Use this value if a smart jac k (network terminatio n

device) has been installed by the telephone carrier, or if the first active device on the T1 is between 2,000 and 3,000 feet away.

(2) 7.5 db—Use this value only if there is no smart jack and the first repeater is 1,000 to 2,000 feet away.

(3) 15 db—Use this value only if there is no smart jack and the first repeater is zero to 1,000 feet away.

Z) density Selects density

enforcement technique.

Density should always be set to “NONE” on a B8ZS T1, B8ZS allows a full 64K per DS0.

Never set density to “NONE” on an AMI T1.

M) mode Selects data rate per

DS0 (timeslot).

N) scramble Selects a

mathematical algorithm intended to increase ones density.

(1)NONE—No density enforcement, use this value only and always on a B8ZS T1.

(2)12—The IDCSU begins stuffing ones into the user datastream after 12 consecutive zeroes.

(3)62411—The IDCSU enforces AT&T publication 62411 density restrictions (average 12.5% minimum ones density).

(4)80 0's—The ID CSU begins stuffing ones into the user datastream after 80 consecutive zeroes (recommended).

(5)15 0's—The ID CSU begins stuffing ones into the user datastream after 15 consecutive zeroes.

When connecting to an AMI T1 facility, use 56K only. Use 56K or 64K, as preferred, on a B8ZS T1 facility.

If enabled, user data is sent through an algorithm [(Xor)*55] intended to maximize ones density. If disabled, user data is not altered.

If used at one end of a T1, this option must be used at both ends.

This option is unrelated to encryption or security issues.

Verilink TAC 2130 User Manual 3

-5

Configuration

Menu Option Description Instructions

C) clocking Sets the source of the

clock signal used to control the sampling of Transmit Data by the DSU, and the phase relationship of that clock signal to Transmit Data.

Use TT whenever the IDCSU is connected through a crossover cable to another DCE device, such as another CSU/DSU (tail circuit t im ing).

TT cannot be used on a TAC 2130-S or TAC 2130-T to support tail circuit timing.

G) los lead Selects a DTE control

lead to be monitored for a “loss of signal” condition.

T) alm thld Selects enabling or

disabling thresholds.

ST—The data port samples the transmit data lead during the negative going transition of the transmit clock signal provided by the IDCSU. This is the default setting, which is most often the best selection.

INV ST—The data port samples the transmit data lead during the positive going transition of the transmit clock signal provided by the IDCSU. This setting can be helpful if sampling errors occur because of a long cable between the DTE and the DSU, and/or when the data rate is very high.

TT—The data port samples the transmit data lead during the negative going transition of an external clock signal provided by the DTE. This external clock is usually the transmit clock signal whic h the DSU pro vides, simply fed down the cable to the DTE, which wraps it back to the IDCSU. This is done to control the phase relat io nship between the transmit data and the sampling of the data port. Most types of DTE do not wrap clock back to the DCE, and with most DTE this feature will not operate. When the DTE does wrap clock back to the IDCSU, use this feature, as sampling errors caused by cable-induced phase angles are prevented.

Select DTR to monitor Data Terminal Ready, RTS to monitor Request To Send or NONE to disable LOS detection. When enabled, an alarm is declared and the EQPT LED blinks red, red, green whenever the select ed lea d is not high (on ).

(1)disable—Alarm threshold function is shut off. (2)default—Default values for alarm thresholds are enabled.

I) idle code Selects idle pattern to

be sent in 4K FDL. Used for ESF circuits only, no effect on SF.

DTR) Selects normal or

forced mode fo r DTR. Type “DTR” to change.

DSR) Selects normal or

forced mode f or DSR. Type “DSR” to change.

RTS) Selects normal or

forced mode f or RTS . Type “RTS” to change.

CTS) Selects normal or

forced mode f or CTS. Type “CTS” to change.

1(flag's)—Idle code of 01111110 is sent in Facilities Data Link when no other traffic is present

2(one's)—Idle code of 11111111 is sent in Facilities Data Link when no other traffic is present

When DTR=Y, (default) the true state of Data Terminal Ready is ignored and the IDCSU return s DSR.

When DTR=N, the IDCSU returns DSR only when DTR is asserted by t he DTE.

When DSR=Y, Data Set Ready is forced on. When DSR=N (default), DSR is asserted by the IDCSU only

when the DTE asserts DTR. When RTS=Y, the true state of Request To Send is ignored

and the IDCSU transmits data and returns CTS to the DTE. When RTS=N, (default) the IDCSU transmits data but returns

CTS as a high only when RTS is asserted by the DTE. When CTS=Y, the true state of R TS is ignor ed and the IDCS U

transmits data and returns Clear To Send to the DTE. When CTS=N, (default) the IDCSU transmits data but returns

CTS as a high only when RTS is asserted by the DTE.

3

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Verilink TAC 2130 User Manual

Menu Option Description Instructions

Configuration

DCD) Selects normal or

forced mode for DCD. Type “DCD” to change.

D) select DS-0 (1-24) Selects the timeslots

(DS0s) to use.

B) timing Selects the source of

the Transmit Clock used by the IDCSU to transmit data toward the T1 network.

TIU timing, external timing and DTE timing are supported in the TAC 2130, SCC 2130, and NCC 2130.

TIU timing, external timing, and DTE timing are not supported in TAC 2130-S modules or TAC 2130-T modules.

When connecting to a T1 facility provide d by an interexchange carrier (long distan ce company) NET timing is usually required.

When DCD=Y, the IDCSU asserts Data Carrier Detect at all times.

When DCD=N, (default) the IDCSU asserts DCD when it is receiving a valid framed signal.

Enter a range separated by a hypen (1-24) or indi vidual timeslots separated by commas (1,3,5 ,7 ,9 ,10,11,12,21).

(1)INT—The IDCSU uses an internal oscillator to generate a

1.544 MHz clock. Used only at one end of a T1 on which the carrier uses no DACS.

(2)EXT 422—The IDCSU uses a balanced clock signal provided by an external source through the DIN connector on the rear connector module.

(3)EXT TTL—The IDCSU uses an unbalanced (0V to +5V) clock signal provided by an external clock source through the DIN connector on the rear connector module.

(4)NET—The IDCSU uses the clock recovered from receive data on the T1 network port for the transmit clock. This is most often the desired option and is required if the network provides a clo ck (u s e s a DAC S) .

(5)TIU—The IDCSU uses a clock on data bus C produced by an optional TIU 2850 module inst al led in the same shel f.

(6)DTE—The IDCSU uses an external clock provided by the DTE on the lead pair designated as Terminal Timing (TT) in RS-422/RS-449/EIA 530 or Serial Clock Transmit Exte rnal (SCTE) in V.35. Use of this option requires the TT selection for clocking. Together, TT clocking and DTE timing establish tail-circuit timing.

P) prm Performance

C1-C7) canned config

O) poll far end If enabled on a point-

Response Messages can optionally be sent in the 4K FDL portion of an ESF framed T1.

Allows selection of any of seven configurations which all have in common:

Framing = ESF Line Coding = B8ZS Density = 12% + 80 zeroes Timing = NET DTE Clocking = ST Mode = 64K

to-point ESF T1 , far end polling can monitor alar m s at a remote CSU.

1(NO)—Performance response messages received from the network are ignored. No messages are sent

2(USER)—Performance response messag es are allowed responses and information stored in the user ESF registers is made available. Used by pro-active carriers.

Canned Configuratio n s C1 throug h C7 us e t hese d ata rate and timeslot assignments:

C1—1.536 Mbit/s using DS0s 1-24 C2—768 kbit/s using DS0s 1-12 C3—512 kbit/s using DS0s 1-8 C4—384 kbit/s using DS0s 1-6 C5—256 kbit/s using DS0s 1-4 C6—128 kbit/s using DS0s 1-2 C7—1.472 Mbit/s using DS0s 1-23

(1) yes—Far end polling is used. Requires FDL continuity from end to end. A DACS in the T1 usually terminates the FDL making this unusable. Note that ESF is required to use this option.

(2) no—Far end polling is not supported.

Verilink TAC 2130 User Manual 3

-7

Configuration

Menu Option Description Instructions

G) Alarm Determines wheth er

or not alarm messages are presented onscreen.

V) Data Invert Sends ones as zeroes

and zeroes as ones. If used at one end of

a T1, must be used at both ends of the T1.

X) exit menu Exit this menu. Returns to the IDCSU

0(Disable)—Alarm reporting is turned off. 1(Enable)—Ala rm repo r t ing is enab led . Mes sag e s wil l

appear on the Craft terminal as alar m s occur and clear. Data inversion is sometimes used to manipulate ones

density. If it is known that the data from a particular DTE will always have more zeroes than ones, data inversion will make it have more ones than zeroes. Use of this option to attempt 64K per DS0 bandwidth over an AMI facility is not recommended.

Firmware Upgrade Procedures

Firmware upgrades to an IDCSU can be done in three ways:

Replacing the integrated circuits which hold the CSU firmware.

•

Using either Access Manager 2000 or Node Manager to

•

download new code to the module. Using an NCM 2000 to broadcast new code.

•

Main Menu

.

Replacing Firmware ICs

Network Management Programs

The firmware in a TAC 2130 or TAC 2130- S resides i n an EEPR OM in socket U11.

The firmware in a TAC 2130-T resides in a Flash IC in socket U29. Contact Verilink Technical Support (800-837-4546 extension 333) if

you require a firmware upgrade kit.

Both Access Manager 2000 and Node Manager offer download procedures which can be used to upgrade the IDCSU.

For details on using Access Manager 2000 to upgrade an IDCSU, refer to the

Access Manager 2000 User Manual

.

For details on using Node Manager to upgrade an IDCSU, refer to the

Node Manager User Manual

If you are using an NCM 2000 as the node controller, see the

2000 User Manual

for a detailed firmware upgrade procedure.

.

NCM

3

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Verilink TAC 2130 User Manual

Thumbwheel Switches

Thumbwheel switches are provided on the front panel of the NCC and SCC node co nt rollers as a measure of last resor t for configuring the application modules.

Whenever possible, use the Craft interface or a network management program instead of th e thumbwheels.

Configuration

Thumbwheel Procedure

A four-step procedure is used for each thumbwheel command:

1. Set the thumbwheel to the number, 01 through 30, equal to the slot number of the module to be co nfigured . If a node co nsists of multi-line shelves, the first slot in shelf two would be numbered as 14 and the last slot 26. In a node consist ing of all dual-line shelves, the first (left-hand) slot of the second shelf is slot number 03.

2. Rapidly press the EXE pushbutton twice, as if double-clicking a mouse. If the NCC or SCC accepts your double-click, the STAT LED on the selected module will begin to blink green to off. If the STAT LED does not begin to blink , try double clicking agai n at a slightly faster or slower rate. Do not proceed to step 3 until the STAT LED on the desired module begins to blink. Once the STAT LED does begin to blink, steps 3 and 4 must be completed within 60 seco nds or the thumbwheel command procedure will time-out.

3. Set the thumbwheel switches to the command value to be used, per Table 3-5 below.

4. Double-click the EXE pushbutton again. If the NCC or SCC module accepts your double-click, the STAT LED on the selected module will stop blinking green to off and will return to some other state. If the STAT LED on the module continues to blink green to off, the NCC or SCC did not accept your double-click. Try double-clicking again, at a faster or slower rate. If you are not successful within 60 seconds of the time you selected the module in step 2, the module will timeout and return to its normal state. If this happens, start over with step 1 of this procedure.

Thumbwheel Commands

Table 3-5 lists the commands available through the front panel

thumbwheels.

Verilink TAC 2130 User Manual 3

-9

Configuration

Table 3-5 Thumbwheel Switch Commands

Code Applies to Description

01 to 30 Any of first

30

modules

31 NCC 2020

NCC 2130

SCC 2020 SCC 2130

32 NCC 2020

NCC 2130

SCC 2020 SCC 2130

40 NCC 2020

SCC 2020

TAC 2010

41 NCC 2020

SCC 2020

TAC 2010

42 NCC 2020

SCC 2020

TAC 2010

43 NCC 2020

SCC 2020

TAC 2010

Selects a module in the indicated slot, up to slot 30. A node controlled by an NCC module can contain a maximum of 30 modules. A node controlled by an SCC can have up to 52 modules, but only the first 30 modules can be selected with the thumbwheel switches.

Accesses the controller functionality of the NCC or SCC node controller (not the T1 CSU portion). For an NCC or SCC in slot 1 of shelf 1, use address 01 to set CSU options.

Resets the modem interface by sending the configured modem initialization string to the DB-9 modem port.

Canned configurati o n #1, EQPT=SF/AMI NET=ESF/AM I.

Canned configuration #2, EQPT=ESF/AMI NET=ESF/AMI.

Canned configurati o n #3, EQPT=SF/AMI NET=ESF/B8ZS.

Canned configuration #4, EQPT=SF/B8ZS NET=ESF/B8ZS.

44 NCC 2020

SCC 2020

TAC 2010

45 NCC 2020

NCC 2130

46 NCC 2020

NCC 2130

47 NCC 2020

NCC 2130

SCC 2020

SCC 2130 TAC 2010 TAC 2130

48 NCC 2020

NCC 2130

SCC 2020

SCC 2130 TAC 2010 TAC 2130

Canned configurati on #5, EQPT=ESF/B8ZS NET= ESF/B8ZS.

The configuration of the selected module—having been previously stored—is restored to the module from the NCC. Not supported by SCC modules.

The configuration of the module selected in steps 1 and 2 of this thumbwheel command sequ ence is stored in the NCC. If the module is replaced or loses configuration later, command 45 can be used to restore it. Not supported by SCC modules

Network LBO = 0 dB; Typical value —use when a T1 installed by a local Bell carrier is terminated in a “smart jack” (network termination device), or the first repeater is 2000 to 3000 feet away.

Network LBO = 7.5 dB; Attenuates transmit signal by 7.5db.

IF NO SMART JACK IS PRESENT

(repeater, T3 mux, far CSU) is 1000 to 2000 feet away.

. Implies that the first active device

USE ONLY

3

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Verilink TAC 2130 User Manual

Code Applies to Description

Configuration

49 NCC 2020

NCC 2130

SCC 2020

SCC 2130 TAC 2010 TAC 2130

50 NCC 2020

SCC 2020 TAC 2010

51 NCC 2020

SCC 2020 TAC 2010

52 NCC 2020

SCC 2020 TAC 2010

53 NCC 2020

SCC 2020 TAC 2010

54 NCC 2020

SCC 2020 TAC 2010

55 NCC 2020

SCC 2020 TAC 2010

DIU 2140

Network LBO = 15 dB; Attenuates transmit signal by 15db.

IF NO SMART JACK IS PRESENT

(repeater, T3 mux, far CSU) is 0 to 1000 feet away.

Selects DSX-1 Equipment cabl e length of 0-132 ft.

Selects DSX-1 Equipment cable length of 133-265 ft.

Selects DSX-1 Equipment cable length of 266-398 ft.

Selects DSX-1 Equipment cable length of 399-532 ft.

Selects DSX-1 Equipment cable length of 533-655 ft.

Sets data bus to NONE (CSU mode) [default].

. Implies that the first active device

USE ONLY

56 NCC 2020

SCC 2020 TAC 2010

DIU 2140

57 NCC 2020

SCC 2020 TAC 2010

DIU 2140

58 NCC 2020

SCC 2020 TAC 2010

DIU 2140

59 NCC 2020

NCC 2130

SCC 2020

SCC 2130 TAC 2010 TAC 2130

Sets data bus to A (Mux mode).

Sets data bus to B (Mux mode).

Sets data bus to C (Mux mode).

Sends in-band CSU loop-up code to far-end CSU, this should cause the far end CSU to enter a Line Loopback condition.

Verilink TAC 2130 User Manual 3

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Configuration

Code Applies to Description

60 NCC 2020

NCC 2130

SCC 2020

SCC 2130 TAC 2010 TAC 2130

61 NCC 2020

NCC 2130

SCC 2020

SCC 2130 TAC 2010 TAC 2130

62 DIU 2140 Uses timeslot 24 on the assigned CSU. Sets all 5 data port s to 9.6

63 DIU 2140 Selects split timing (RX clock ~ TX clock); typical value. 64 DIU 2140 Selects single source timing (RX clock = TX clock). 65 DIU 2140 Sets DTE timing option for all synchronous data ports to ST. 66 DIU 2140 Sets DTE timing option for all synchronous data ports to ST. 67 DIU 2140 Sets DTE timing option for all synchronous data ports to TT. 68 DIU 2140 Sets RTS to normal operation. For synchronous data ports, data is

Sends framed QRSS to far end.

Stops QRSS pattern and sends inband CSU loop-down code to far end.

kbit/s.

transmitted ONLY if the DTE asse rts RTS (ignored in Async) [default].

69 DIU 2140 Sets RTS to forced on (requires version 1.1 DIU 2140 firmware), data is

80 DIU 2130

NCC 2130

SCC 2130 TAC 2130

81 DIU 2130

NCC 2130

SCC 2130 TAC 2130

82 DIU 2130

NCC 2130

SCC 2130 TAC 2130

83 DIU 2130

NCC 2130

SCC 2130 TAC 2130

84 DIU 2130

NCC 2130

SCC 2130 TAC 2130

sent regardless of actual state of RTS from DTE. This behavior always applies to Async ports.

Sets Data Port 1 to tail-circuit timing. Note that TAC 2130-T and TAC 2130-S modules do not support tail-circuit timing, external timing, or TIU 2850 timing.

Canned configuration #1—assigns al l 24 timeslots to data port #1.

Canned configuration #2—assigns timeslots 1-12 to data port #1 and timeslots 13-24 to data port #2 (data port #2 igno red by TAC 2130).

Canned configuration #3—assigns timeslots 1-8 to data port #1 and timeslots 9-16 to data port #2 (data port #2 ignored by TAC 2130).

Canned configuration #4—assigns timeslots 1-6 to data port #1 and timeslots 7-12 to data port #2 (data port #2 ignored by TAC 2130).

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Verilink TAC 2130 User Manual

Code Applies to Description

Configuration

85 DIU 2130

NCC 2130

SCC 2130 TAC 2130

86 DIU 2130

NCC 2130

SCC 2130 TAC 2130

87 DIU 2130

NCC 2130

SCC 2130 TAC 2130

88 DIU 2130

NCC 2130

SCC 2130 TAC 2130

DIU 2131

89 DIU 2130

NCC 2130

SCC 2130 TAC 2130

DIU 2131

90 DIU 2130

NCC 2130

SCC 2130 TAC 2130

DIU 2131

Canned configuration #5—assigns timeslots 1-4 to data port #1 and timeslots 5-8 to data port #2 (data port #2 ignored by TAC 2130).

Canned configuration #6—assigns timeslots 1-2 to data port #1 and timeslots 3-4 to data port #2 (data port #2 ignored by TAC 2130).

Canned configuration #7—assigns timeslots 1-23 to data port #1 and timeslot 24 to data port #2 (data port #2 ignored by TAC 2130).

Sets DTE port(s) clock to TT. The data port samples Transmit Data during the negative going transition of a clock received from the DTE (on the pair Terminal Timing in RS-422, SCTE in V.35, or XTC in RS-

232).

Sets DTE port(s) clock to inverted ST (ST Transmit Data during the positive going transition of the transmit clock signal.

Sets DTE ports to n × 56 kbit/s (as required for an AMI T1).

). The data port samples

91 DIU 2130

NCC 2130

SCC 2130 TAC 2130

DIU 2131

92 DIU 2130

DIU2131

99 NCC 2020

NCC 2130

SCC 2020

SCC 2130

00 ALL Clears the address command. Releases currently selected module. Use

Unassigns Port 1 timeslot(s).

Unassigns Port 2 timeslot(s).

Resets password for the Craft interface to the default condition (no password).

this command if you change your mind after selecting a module in step two, or if you select the wrong module accidentally, or to practice double-clicking.

Verilink TAC 2130 User Manual 3

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Configuration

3

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Verilink TAC 2130 User Manual

Chapter

4

Performance Menu

Performance Monitoring

After the IDCSU is installed, the Performance Monitoring routines enable you to monitor the performance of the T1 circuit.

The IDCSU maintains a history of the T1 circu it performance for the previous 24 hours and offers the ability to examine various tables.

Performance statistics can be viewed in a Craft interface session. As described by the various technical publications which define ESF

(Extended SuperFrame), the IDCSU maintains performance records in 15-minute intervals. After an IDCSU has been operating for 24 hours, there are 96 of these 15-minute intervals stored in the CSU registers.

Most of the information accessible under the Performance Menu is only available when the CSU is used on a T1 implemented with ESF framing. CRC error checking, used to detect errored seconds, is only present on an ESF T1.

Performance Menu Display

The Performance Menu is accessed by typing “P” while at the IDCSU Main Menu.

The Performance Menu offers six options to display information and a Reset Registers command to clear all stored information.

Figure 4-1 Performance Menu

--- PERFORMANCE MONITORING ---

--- PERFORMANCE MONITORING --- --- PERFORMANCE MONITORING ---

N) 1 hour network

N) 1 hour network N) 1 hour network

E) 24 hour es

E) 24 hour es E) 24 hour es

B) 24 hour bes

B) 24 hour bes B) 24 hour bes

S) 24 hour ses

S) 24 hour ses S) 24 hour ses

U) 24 hour uas

U) 24 hour uas U) 24 hour uas

L) 24 hour lofc

L) 24 hour lofc L) 24 hour lofc

R) reset registers

R) reset registers R) reset registers

X) exit menu

X) exit menu X) exit menu

[1,10] NEAR IDCSU 2130 >

[1,10] NEAR IDCSU 2130 >[1,10] NEAR IDCSU 2130 >

Verilink TAC 2130 User Manual 4

-1

Performance Monitoring

Definitions

The acronyms shown on the Performa n c e Menu are described in

Table 4-1 below

Table 4-1 Performance Menu Acronyms

Acronym Meaning

ES Errored Second—Any second during which one or more bit

errors have been detected.

BES Bursty Errored Seconds—A second having between 2 and 319

CRC-6 error events. Bursty errored seconds are not counted when an SES or UAS is

counted.

SES Severely Errored Second—A second with 320 or more CRC-6

error events, or one or more OOF (Out Of Frame) events.

UAS Unavailable Second—Any sec ond dur ing wh ich an Unava ilab le

Signal State occ urs. An Unavailable Signal State condition is declared after ten

consecutive S ES a nd clea rs on ly af ter t en c ons ecuti ve seco nd s that are not Severely Errored Se conds.

LOFC Loss Of Frame Count—An accumulated value equal to the

number of times that a Loss Of Frame has been declared. Loss of frame is declared when either LOS (Loss Of Signal) or

OOF (Out Of Frame) is true for two to three seconds. LOF is cleared only after 10 seconds with LOS and OOF cl ea r.

One Hour Network

The One Hour Network function (Figure 4-2) produces screen output listing a 24-Hou r summary for each of the parameters described in Table 4-1 above. Also shown are counts for each of the same alarm conditions for the preceeding hour, in four 15-minute intervals.

Figure 4-2 One Hour Network Report

ONE HOUR PERFORMANCE DATA

ONE HOUR PERFORMANCE DATA ONE HOUR PERFORMANCE DATA 5-14-98 14:10:44

5-14-98 14:10:44

5-14-98 14:10:445-14-98 14:10:44 Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130Site Name: Tech Pubs TAC 2130 ELEMENT ID 1, 1

ELEMENT ID 1, 1

ELEMENT ID 1, 1 ELEMENT ID 1, 1 Valid Intervals 96 Seconds in Current Interval 464

Valid Intervals 96 Seconds in Current Interval 464

Valid Intervals 96 Seconds in Current Interval 464Valid Intervals 96 Seconds in Current Interval 464

ES UAS BES SES LOFC

ES UAS BES SES LOFCES UAS BES SES LOFC 0 0 0 0 0 24 Hour Total

0 0 0 0 0 24 Hour Total

0 0 0 0 0 24 Hour Total0 0 0 0 0 24 Hour Total 0 0 0 0 0 Current Interval

0 0 0 0 0 Current Interval

0 0 0 0 0 Current Interval0 0 0 0 0 Current Interval 0 0 0 0 0 Interval 1

0 0 0 0 0 Interval 1

0 0 0 0 0 Interval 10 0 0 0 0 Interval 1 0 0 0 0 0 Interval 2

0 0 0 0 0 Interval 2

0 0 0 0 0 Interval 20 0 0 0 0 Interval 2 0 0 0 0 0 Interval 3

0 0 0 0 0 Interval 3

0 0 0 0 0 Interval 30 0 0 0 0 Interval 3 0 0 0 0 0 Interval 4

0 0 0 0 0 Interval 4

0 0 0 0 0 Interval 40 0 0 0 0 Interval 4

[1,10] NEAR IDCSU 2130 >

[1,10] NEAR IDCSU 2130 >[1,10] NEAR IDCSU 2130 >

4

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Verilink TAC 2130 User Manual

Performance Monitoring

24-Hour Errored Seconds

The 24-Hour Errored Seconds selection on the Performance Menu produces a screen showing the errored second counts for each of the last 96 fifteen-minute intervals. Errored seconds are the least serious of the error conditions tracked by the CSU. A typical errored seconds display is shown in Figure 4-3.

Figure 4-3 24-Hour Errored Seconds

24 HOUR ES PERFORMANCE DATA 5-14-98 14:25:26

24 HOUR ES PERFORMANCE DATA 5-14-98 14:25:2624 HOUR ES PERFORMANCE DATA 5-14-98 14:25:26 Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130Site Name: Tech Pubs TAC 2130 1, 1

1, 1

1, 1 1, 1 Valid Intervals 96 Seconds in Current Interval 627

Valid Intervals 96 Seconds in Current Interval 627

Valid Intervals 96 Seconds in Current Interval 627Valid Intervals 96 Seconds in Current Interval 627 ES in 24 Hours 23 ES in Current Interval 0

ES in 24 Hours 23 ES in Current Interval 0

ES in 24 Hours 23 ES in Current Interval 0ES in 24 Hours 23 ES in Current Interval 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 3: 0 19: 3 35: 0 51: 0 67: 0 83: 0

3: 0 19: 3 35: 0 51: 0 67: 0 83: 0

3: 0 19: 3 35: 0 51: 0 67: 0 83: 0 3: 0 19: 3 35: 0 51: 0 67: 0 83: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 010: 0 26: 0 42: 0 58: 0 74: 0 90: 0 11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 011: 0 27: 0 43: 0 59: 0 75: 0 91: 0 12: 0 28: 0 44: 5 60: 0 76: 0 92: 0

12: 0 28: 0 44: 5 60: 0 76: 0 92: 0

12: 0 28: 0 44: 5 60: 0 76: 0 92: 012: 0 28: 0 44: 5 60: 0 76: 0 92: 0 13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 013: 0 29: 0 45: 0 61: 0 77: 0 93: 0 14: 0 30: 0 46: 0 62: 0 78: 15 94: 0

14: 0 30: 0 46: 0 62: 0 78: 15 94: 0

14: 0 30: 0 46: 0 62: 0 78: 15 94: 014: 0 30: 0 46: 0 62: 0 78: 15 94: 0 15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 015: 0 31: 0 47: 0 63: 0 79: 0 95: 0 16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 016: 0 32: 0 48: 0 64: 0 80: 0 96: 0

[1,10] NEAR IDCSU 2130 >

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Verilink TAC 2130 User Manual 4

-3

Performance Monitoring

24-Hour Bursty Errored Seconds

Bursty errored seconds are mo re severe than errored seconds and can cause some applications to lose sessions or suffer excessive retransmissions.

A typical 24-Hour Bursty Errored Seconds display is shown i n

Figure 4-4.

Figure 4-4 24-Hour Bursty Errored Seconds

24 HOUR BES PERFORMANCE DATA 5-14-98 14:43:46

24 HOUR BES PERFORMANCE DATA 5-14-98 14:43:4624 HOUR BES PERFORMANCE DATA 5-14-98 14:43:46 Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130Site Name: Tech Pubs TAC 2130 1, 1

1, 1

1, 1 1, 1 Valid Intervals 96 Seconds in Current Interval 829

Valid Intervals 96 Seconds in Current Interval 829

Valid Intervals 96 Seconds in Current Interval 829Valid Intervals 96 Seconds in Current Interval 829 BES in 24 Hours 0 BES in Current Interval 0

BES in 24 Hours 0 BES in Current Interval 0

BES in 24 Hours 0 BES in Current Interval 0BES in 24 Hours 0 BES in Current Interval 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 3: 0 19: 0 35: 0 51: 0 67: 0 83: 0

3: 0 19: 0 35: 0 51: 0 67: 0 83: 0

3: 0 19: 0 35: 0 51: 0 67: 0 83: 0 3: 0 19: 0 35: 0 51: 0 67: 0 83: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 010: 0 26: 0 42: 0 58: 0 74: 0 90: 0 11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 011: 0 27: 0 43: 0 59: 0 75: 0 91: 0 12: 0 28: 0 44: 0 60: 0 76: 0 92: 0

12: 0 28: 0 44: 0 60: 0 76: 0 92: 0

12: 0 28: 0 44: 0 60: 0 76: 0 92: 012: 0 28: 0 44: 0 60: 0 76: 0 92: 0 13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 013: 0 29: 0 45: 0 61: 0 77: 0 93: 0 14: 0 30: 0 46: 0 62: 0 78: 0 94: 0

14: 0 30: 0 46: 0 62: 0 78: 0 94: 0

14: 0 30: 0 46: 0 62: 0 78: 0 94: 014: 0 30: 0 46: 0 62: 0 78: 0 94: 0 15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 015: 0 31: 0 47: 0 63: 0 79: 0 95: 0 16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 016: 0 32: 0 48: 0 64: 0 80: 0 96: 0

[1,10] NEAR IDCSU 2130 >

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Verilink TAC 2130 User Manual

Performance Monitoring

24-Hour Severely Errored Seconds

Severely Errored Seconds pose a serious threat to the integrity of your data. Since a T1 offers a maximum of 1.536 Mbit/s, an error rate over 320 per second is significant. Severely errored seconds can also result from Out Of Frame (O OF) condi tions. Du ring an OOF event all user data is lost.

A typical 24-Hour Severely Errored Seconds Report is shown below in Figure 4-5.

Figure 4-5 24-Hour Severely Errored Seconds

24 HOUR SES PERFORMANCE DATA 5-14-98 14:48:46

24 HOUR SES PERFORMANCE DATA 5-14-98 14:48:4624 HOUR SES PERFORMANCE DATA 5-14-98 14:48:46 Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130Site Name: Tech Pubs TAC 2130 1, 1

1, 1

1, 1 1, 1 Valid Intervals 96 Seconds in Current Interval 231

Valid Intervals 96 Seconds in Current Interval 231

Valid Intervals 96 Seconds in Current Interval 231Valid Intervals 96 Seconds in Current Interval 231 SES in 24 Hours 0 SES in Current Interval 0

SES in 24 Hours 0 SES in Current Interval 0

SES in 24 Hours 0 SES in Current Interval 0SES in 24 Hours 0 SES in Current Interval 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 3: 0 19: 0 35: 0 51: 0 67: 0 83: 0

3: 0 19: 0 35: 0 51: 0 67: 0 83: 0

3: 0 19: 0 35: 0 51: 0 67: 0 83: 0 3: 0 19: 0 35: 0 51: 0 67: 0 83: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 010: 0 26: 0 42: 0 58: 0 74: 0 90: 0 11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 011: 0 27: 0 43: 0 59: 0 75: 0 91: 0 12: 0 28: 0 44: 0 60: 0 76: 0 92: 0

12: 0 28: 0 44: 0 60: 0 76: 0 92: 0

12: 0 28: 0 44: 0 60: 0 76: 0 92: 012: 0 28: 0 44: 0 60: 0 76: 0 92: 0 13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 013: 0 29: 0 45: 0 61: 0 77: 0 93: 0 14: 0 30: 0 46: 0 62: 0 78: 0 94: 0

14: 0 30: 0 46: 0 62: 0 78: 0 94: 0

14: 0 30: 0 46: 0 62: 0 78: 0 94: 014: 0 30: 0 46: 0 62: 0 78: 0 94: 0 15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 015: 0 31: 0 47: 0 63: 0 79: 0 95: 0 16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 016: 0 32: 0 48: 0 64: 0 80: 0 96: 0

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Verilink TAC 2130 User Manual 4

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Performance Monitoring

24-Hour Unavailable Seconds

After ten Severely Errored S e conds in a row, the CSU begins to count Unavailable Seconds. As the name suggests, the error rate in this condition is considered to be so high that the T1 circuit should be treated as though it were not available.

Once a CSU begins co unti ng Unav a ilable Se conds i t c onti nues t o d o so until ten consecutive seconds pass, all of which are error free or have a lower error rate than a Se verely Errored Second.

A typical 24-Hour Unavailable Seconds display is shown below in

Figure 4-6:

Figure 4-6 24-Hour Unavailable Seconds

24 HOUR UAS PERFORMANCE DATA 5-14-98 15:13:03

24 HOUR UAS PERFORMANCE DATA 5-14-98 15:13:0324 HOUR UAS PERFORMANCE DATA 5-14-98 15:13:03 Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130Site Name: Tech Pubs TAC 2130 1, 1

1, 1

1, 1 1, 1 Valid Intervals 96 Seconds in Current Interval 786

Valid Intervals 96 Seconds in Current Interval 786

Valid Intervals 96 Seconds in Current Interval 786Valid Intervals 96 Seconds in Current Interval 786 UAS in 24 Hours 0 UAS in Current Interval 0

UAS in 24 Hours 0 UAS in Current Interval 0

UAS in 24 Hours 0 UAS in Current Interval 0UAS in 24 Hours 0 UAS in Current Interval 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 3: 0 19: 0 35: 0 51: 0 67: 0 83: 0

3: 0 19: 0 35: 0 51: 0 67: 0 83: 0

3: 0 19: 0 35: 0 51: 0 67: 0 83: 0 3: 0 19: 0 35: 0 51: 0 67: 0 83: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 010: 0 26: 0 42: 0 58: 0 74: 0 90: 0 11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 011: 0 27: 0 43: 0 59: 0 75: 0 91: 0 12: 0 28: 0 44: 0 60: 0 76: 0 92: 0

12: 0 28: 0 44: 0 60: 0 76: 0 92: 0

12: 0 28: 0 44: 0 60: 0 76: 0 92: 012: 0 28: 0 44: 0 60: 0 76: 0 92: 0 13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 013: 0 29: 0 45: 0 61: 0 77: 0 93: 0 14: 0 30: 0 46: 0 62: 0 78: 0 94: 0

14: 0 30: 0 46: 0 62: 0 78: 0 94: 0

14: 0 30: 0 46: 0 62: 0 78: 0 94: 014: 0 30: 0 46: 0 62: 0 78: 0 94: 0 15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 015: 0 31: 0 47: 0 63: 0 79: 0 95: 0 16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 016: 0 32: 0 48: 0 64: 0 80: 0 96: 0

[1,10] NEAR IDCSU 2130 >

[1,10] NEAR IDCSU 2130 >[1,10] NEAR IDCSU 2130 >

4

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Verilink TAC 2130 User Manual

Performance Monitoring

24-Hour Loss of Frame Count

A loss of frame synchronization on a T1 circuit causes a loss of

user data

as long as the Out of Frame condition continues.

The 24-Hour Loss of Frame Count ind icates how m any second s, per fifteen-minute interval, were during an Out of Frame condition. These are seconds during which you can be certain that no user data passed. Since there are 900 seconds in a fifteen minute p eriod, the value for any one interval will never exceed 900.

A typical 24-Hour LOFC display is shown below in Figure 4-7.

Figure 4-7 24-Hour Loss Of Frame Count

24 HOUR LOFC PERFORMANCE DATA 5-14-98 15:28:48

24 HOUR LOFC PERFORMANCE DATA 5-14-98 15:28:4824 HOUR LOFC PERFORMANCE DATA 5-14-98 15:28:48 Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130

Site Name: Tech Pubs TAC 2130Site Name: Tech Pubs TAC 2130 1, 1

1, 1

1, 1 1, 1 Valid Intervals 96 Seconds in Current Interval 830

Valid Intervals 96 Seconds in Current Interval 830

Valid Intervals 96 Seconds in Current Interval 830Valid Intervals 96 Seconds in Current Interval 830 LOFC in 24 Hours 0 LOFC in Current Interval 0

LOFC in 24 Hours 0 LOFC in Current Interval 0

LOFC in 24 Hours 0 LOFC in Current Interval 0LOFC in 24 Hours 0 LOFC in Current Interval 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0

1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 1: 0 17: 0 33: 0 49: 0 65: 0 81: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0

2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 2: 0 18: 0 34: 0 50: 0 66: 0 82: 0 3: 0 19: 0 35: 0 51: 0 67: 0 83: 0

3: 0 19: 0 35: 0 51: 0 67: 0 83: 0

3: 0 19: 0 35: 0 51: 0 67: 0 83: 0 3: 0 19: 0 35: 0 51: 0 67: 0 83: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0

4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 4: 0 20: 0 36: 0 52: 0 68: 0 84: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0

5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 5: 0 21: 0 37: 0 53: 0 69: 0 85: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0

6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 6: 0 22: 0 38: 0 54: 0 70: 0 86: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0

7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 7: 0 23: 0 39: 0 55: 0 71: 0 87: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0

8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 8: 0 24: 0 40: 0 56: 0 72: 0 88: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0

9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 9: 0 25: 0 41: 0 57: 0 73: 0 89: 0 10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 0

10: 0 26: 0 42: 0 58: 0 74: 0 90: 010: 0 26: 0 42: 0 58: 0 74: 0 90: 0 11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 0

11: 0 27: 0 43: 0 59: 0 75: 0 91: 011: 0 27: 0 43: 0 59: 0 75: 0 91: 0 12: 0 28: 0 44: 0 60: 0 76: 0 92: 0

12: 0 28: 0 44: 0 60: 0 76: 0 92: 0

12: 0 28: 0 44: 0 60: 0 76: 0 92: 012: 0 28: 0 44: 0 60: 0 76: 0 92: 0 13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 0

13: 0 29: 0 45: 0 61: 0 77: 0 93: 013: 0 29: 0 45: 0 61: 0 77: 0 93: 0 14: 0 30: 0 46: 0 62: 0 78: 0 94: 0

14: 0 30: 0 46: 0 62: 0 78: 0 94: 0

14: 0 30: 0 46: 0 62: 0 78: 0 94: 014: 0 30: 0 46: 0 62: 0 78: 0 94: 0 15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 0

15: 0 31: 0 47: 0 63: 0 79: 0 95: 015: 0 31: 0 47: 0 63: 0 79: 0 95: 0 16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 0

16: 0 32: 0 48: 0 64: 0 80: 0 96: 016: 0 32: 0 48: 0 64: 0 80: 0 96: 0

all

[1,10] NEAR IDCSU 2130 >

[1,10] NEAR IDCSU 2130 >[1,10] NEAR IDCSU 2130 >

Reset Registers

The Reset Registers command on the Perfor mance Me nu is used to clear all accumulated information held in the ESF registers. All of the values in the displays available from the Performance Menu are reset to zero, and the number of valid intervals is reset to zero.

A typical use of this option would be at the end of an installation. If a T1 facility has been serviced and it is believed that any problems have been corrected, reset th e regist ers so that any errors r eported are known to be new.

Verilink TAC 2130 User Manual 4

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Performance Monitoring

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Verilink TAC 2130 User Manual

Chapter

5

Using Diagnostics

Diagnostics

While installing your IDCSU, or after it has been placed into service, the Diagnostic routines allow you to troubleshoot or verify the T1 circuit and Verilink equipment.

Light Emitting Diodes (LEDS) on the IDCSU front panel provide a visual indication of alarm and status conditions. The Diagnostics Menu provides current information about possi ble alarm conditions and offers command options which can be used to establish and terminate loopbacks and test patterns.

A typical way to use the Diagnostic s Menu might involve the following steps:

1. Establish a loopback somewhere in the circuit path.

2. Start tra ns m i t ti n g a te s t pat te r n.

Alarm Status

3. Observe the test error counter to see if the test pattern is received as it was sent.

a. If no errors are observed, move the point of loopback

further away to test more of the circuit path, or

b. If errors are observed, move the point of loopback closer

to determine the source of the problem.

4. Stop the test pattern, drop all loopbacks, then: a. Place the T1 circuit back into service if all tests passed, or b. Contact the approp riate vendor if a problem was found.

In addition to off e ring the ability to put up and take down loopbacks and test patterns, the Diagnostics Menu also offers information about the current status of the DTE interface and the T1 network interface.

The top area of the Diagnostics Menu includes a drawing made up of ASCII characters representing the operation of the CSU. The equipment interface is shown on the left and the network interface is shown on the right. In the area to the left and right of the line drawing of a framer, status information is represented by words displayed in upper case characters.

Verilink TAC 2130 User Manual 5

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Diagnostics

Diagnostics Menu

A sample of the Diagnostics Menu is shown below in Figure 5-1. In this example the word

PULSES

appears on both the DTE (left

hand) and network (right hand) sides of the display. When the word

PULSES

Figure 5-1 Diagnostics Menu

IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8

IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8 IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8

|-----------------------|

|-----------------------| |-----------------------| | |

| |

| | | |

-------<< dte <<-------|----------|f|----------|-------<< net <<-------

-------<< dte <<-------|----------|f|----------|-------<< net <<--------------<< dte <<-------|----------|f|----------|-------<< net <<------ | |r| | PULSES

| |r| | PULSES

| |r| | PULSES | |r| | PULSES | |a| |

| |a| |

| |a| | | |a| | | |m| |

| |m| |

| |m| | | |m| | PULSES | |e| |

PULSES | |e| |

PULSES | |e| | PULSES | |e| |

------->> dte >>-------|----------|r|----------|------->> net >>-------

------->> dte >>-------|----------|r|----------|------->> net >>-------------->> dte >>-------|----------|r|----------|------->> net >>------ | |

| |

| | | | |-----------------------|

|-----------------------|

|-----------------------| |-----------------------|

W) enable dte loops (YES) D) dte loops S) net signals

W) enable dte loops (YES) D) dte loops S) net signalsW) enable dte loops (YES) D) dte loops S) net signals Y) enable csu loops (YES) N) net loops E) csu err counter

Y) enable csu loops (YES) N) net loops E) csu err counter

Y) enable csu loops (YES) N) net loops E) csu err counterY) enable csu loops (YES) N) net loops E) csu err counter T) net test time (15 SEC) Q) end tests Z) reset alarm

T) net test time (15 SEC) Q) end tests Z) reset alarm

T) net test time (15 SEC) Q) end tests Z) reset alarmT) net test time (15 SEC) Q) end tests Z) reset alarm B) dte test and mon bec M) mon leads X) exit menu

B) dte test and mon bec M) mon leads X) exit menu

B) dte test and mon bec M) mon leads X) exit menuB) dte test and mon bec M) mon leads X) exit menu

appears alone, that interfac e has no alarms.

[1,1] NEAR IDCSU 2130 >

[1,1] NEAR IDCSU 2130 >[1,1] NEAR IDCSU 2130 >

Since a T1 circuit operates by sending pulses to represen t a logical one, the indication network (right side) interface. Therefore, of all the messages which might appear on this menu in upper case characters, only one which does not represent an alarm condition. Pulses are the logical opposite of a Loss of Signal (LOS) condition.

Figure 5-2 below shows the result of disconnecting the T1 circuit

from an IDCSU modu le. Th e word right side where network status is indicated. Instea d, al arm conditions are reported, including

ERRORS

NOTE:

PULSES

means that the IDCSU sees pulses on the

is the

PULSES

no longer appears on the

ALARM, FRAME LOSS, CRC

, and

SIGNAL LOSS

.

Whenever an IDCSU reports Signal Loss, it will report other alarms as well. The other alarms are caused by the sign al loss condition. Ignore the other alarms and find the cause of the Signal Loss to restore the T1 to service.

5

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Verilink TAC 2130 User Manual

Figure 5-2 Diagnostics Menu

IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8

IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8 IDCSU DIAGNOSTICS FW/HW Rev..1.25/0.8

|-----------------------| ALARM

|-----------------------| ALARM |-----------------------| ALARM | | FRAME LOSS

| | FRAME LOSS

| | FRAME LOSS | | FRAME LOSS

-------<< dte <<-------|----------|f|----------|-------<< net <<-------

-------<< dte <<-------|----------|f|----------|-------<< net <<--------------<< dte <<-------|----------|f|----------|-------<< net <<------ | |r| | SIGNAL LOSS

| |r| | SIGNAL LOSS

| |r| | SIGNAL LOSS | |r| | SIGNAL LOSS | |a| |

| |a| |

| |a| | | |a| | | |m| | CRC ERRORS

| |m| | CRC ERRORS

| |m| | CRC ERRORS | |m| | CRC ERRORS PULSES | |e| |

PULSES | |e| |

PULSES | |e| | PULSES | |e| |

------->> dte >>-------|----------|r|----------|------->> net >>-------

------->> dte >>-------|----------|r|----------|------->> net >>-------------->> dte >>-------|----------|r|----------|------->> net >>------ | |

| |

| | | | |-----------------------|

|-----------------------|

|-----------------------| |-----------------------|

W) enable dte loops (YES) D) dte loops S) net signals

W) enable dte loops (YES) D) dte loops S) net signalsW) enable dte loops (YES) D) dte loops S) net signals Y) enable csu loops (YES) N) net loops E) csu err counter

Y) enable csu loops (YES) N) net loops E) csu err counter

Y) enable csu loops (YES) N) net loops E) csu err counterY) enable csu loops (YES) N) net loops E) csu err counter T) net test time (15 SEC) Q) end tests Z) reset alarm

T) net test time (15 SEC) Q) end tests Z) reset alarm

T) net test time (15 SEC) Q) end tests Z) reset alarmT) net test time (15 SEC) Q) end tests Z) reset alarm B) dte test and mon bec M) mon leads X) exit menu

B) dte test and mon bec M) mon leads X) exit menu

B) dte test and mon bec M) mon leads X) exit menuB) dte test and mon bec M) mon leads X) exit menu

Diagnostics

[1,1] NEAR IDCSU 2130 >

[1,1] NEAR IDCSU 2130 >[1,1] NEAR IDCSU 2130 >

Status Messages

The status messages which can appear on the Diagnostics Menu are listed in Table 5-1.

Verilink TAC 2130 User Manual 5

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Diagnostics

Table 5-1 Diagnostic Menu Status Messages

Message Meaning

ALARM Yellow Alarm (RAI)—The IDCSU is receiving a Remote Alarm Indication Signal on the

FRAME LOSS Out Of Frame (OOF)—The IDCSU does not detect a valid framed signal on the port. If

SIGNAL LOSS Loss Of Signal (LOS)—The IDCSU does not detect any pulses on the port. This is the

CRC ERRORS Cyclic Redundancy Check errors (CRC-6)—the IDCSU detects errors using the CRC-6

BPV The IDCSU is detecting bipolar violations on the port. Two or more pulses in a row

EXT CLK LOSS The IDCSU is configured to use an external clock signal and that signal is not

PULSES Not an alarm condition. The IDCSU does see valid pulses on the port. PULSES should

Diagnostic Commands

port. This signal is sent by a device in a red alarm condition, such as AIS, LOS or LOF.

pulses are also present. Can indicate receipt of unframed all ones—Alarm Indication Signal (AIS)—which is often used as a Keep Alive signal on T1 circuits.

worst possible alarm condit ion on a T1 port. Ignore other alarms and resolve the cause of the LOS first. For a DTE port reporting LOS, it means the LOS option is configured to expect RTS or DTR from the DTE and that signal is not present.

feature of ES F framing. Applies only to T1 circuits using ESF framing.

were of the same polarity, violating the Alternating Mark Inversion requirement.

detected. External clock is supported in the TAC 2130—not in the TAC 2130-S or TAC 2130-T.

always be displayed on the DTE side of the menu .

There are twelve command options available on the IDCSU Diagnostics Menu. Table 5-2 lists all of these commands in right to left order:

Information about th e various loopbacks can be found in the manual

AS2000, The Basics

.

5

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Verilink TAC 2130 User Manual

Table 5-2 Diagnostic Commands

Menu Option Description Instructions

Diagnostics

W) enable dte loops

D) dte loops Presents a prompt line

S) net signals Begins transmitting

Determine s whether the IDCSU will res pond to loop requests from the DTE and the Craft interface.

used to establish near end equipment (DTE) loops, far-end DTE loops, or a local repeater loop.

selected test pattern to the T1 network.

Typically, a loopback is established first.

Received data is compared to the pattern transmitted to determine if errors are occurring on the T1.

If DTE loops are enabled, the operator can establ is h a loopback using the DTE loop command and the DTE can establish a loop using the LL or RL leads on the synchronous serial interface.

If DTE loops are disabled, the DTE cannot establish any loop. The operator will not be able to establish a near loop, but will be able to use repeater loop .

(1) near on—Turn s on a bi di r e ctional loopback at the local synchronous serial in terface. Both local and far-end DTE should “see” this loop.

(2) far on—Sends a Verilink proprietary loop-up command toward the far-end CSU. If successful, thi s loop sh ould be detected by both local and far-end DTE.

(3) near off—Turns off a near loop. (4) far off—Sends a Verilink proprietary loop-down command

toward the far-end CSU. (5) repeater loop—Starts a local-only loopback of transmit

data to the receive circuitry. Local DTE will receive its own data while the far-end receives a keep-alive pattern.

(1) qrss—The IDCSU sends a Quasi-Random Signal Sequence. This test is widely supported by tele phone carriers.

(2) 3 in 24—The IDCSU sends a bit pattern which has a minimum of 3 ones per 24 bits. This low-density pattern will find some T1 problems not detected by other tests.

(3) 1 in 8—The IDCSU sends a pa ttern with seven zeroes followed by a sin gle one. This pattern is su gge ste d for all T1 circuits, since it will never violate ones densit y requirements.

(4) all 1s—The IDCSU sends a framed pattern of all ones. This test produces maximum current on the T1 and can reveal marginal repeaters or resistive connections.

Y) enable csu loops

N) net loops Present s a promp t line

Select s re s ponse to CSU loop requests.

CSU loops face the T1 circuit only. The local DTE does not “see” any CSU loops.

used to select a local CSU loop; or to send a CSU loop-up or loopdown code toward the far-end CSU.

If Inband Up is used to establish a remote CSU Line Loop,

Inband Down

be used later to end that loop.

must

Verilink TAC 2130 User Manual 5

If CSU loops are enabled, the IDCSU will enter a Line Loop or a Payload Loop when either is requested by a received loopup code or an operator command.

If CSU loops are disabled, the IDCSU will not enter a Line Loop or a Payload Loop, whether a loop-up code is received or an operator requests a loop. All Net Loop requests are ignored.

(1) line—Establishes a Line Loop, which faces the T1 circuit only. This same loop is established when an IDCSU receives a standard loop-up code.

(2) payload—Establishes a Payload Loop, which faces the T1 circuit only. Data looped passes through more of the IDCSU circuitry than in a Line Loop.

(3) inband up—Sends a standard loop-u p code towar d the far-end CSU. If successful, th is will place the far-end CSU into a Line Loop.

(4) inband down—Sends a standard loop-up code toward the far-end CSU, which should end a remote Line Loop.

-5

Diagnostics

Menu Option Description Instructions

E) csu err counter Selects display of error

T) net test time Sets the length of time

Q) end tests Ends tests and

Z) reset alarm Removes history of

B) dte test and mon bec

counter or clearing the value and then displaying the error counter.

The ESF errors are a cumulative counter of all ESF error events since power-up.

tests and loopbacks will be allowed to run.

FOREVER is suggested by Verilink.

LOCAL

loopbacks. Does not send any loop-down codes.

any alarms in the last 15 minutes.

Establishes a local DTE loop and sends a test pattern to it.

(1) display—The error counter is displayed an d updated about once per second. A display is produced like:

2532 ESF Errors 0 TEST Errors PRESS ENTER TO EXIT

2532 ESF Errors 0 TEST Errors PRESS ENTER TO EXIT2532 ESF Errors 0 TEST Errors PRESS ENTER TO EXIT

(2) clear and display—The error counter is reset to zero, the ESF errors are unaffected. The error counter report is displayed and updated about once per second.

NTER

To terminate the display of the error counter, pres s

ENTER INTERVAL (DEFAULT, x SEC, x MIN, x HR, FOREVER):

ENTER INTERVAL (DEFAULT, x SEC, x MIN, x HR, FOREVER ):

ENTER INTERVAL (DEFAULT, x SEC, x MIN, x HR, FOREVER ):ENTER INTERVAL (DEFAULT, x SEC, x MIN, x HR, FOREVER):

Type “FOREVER” or type a numeric value followed by “SEC” for seconds, “MIN” for minutes, “HR” for hours.

example “ Stops any locally initiated test patterns, drops any loops in

the local IDCSU, stops monitoring test results. Restores normal operation in the

When used with the “Reset Registers” command on the

Performance Menu

STAT LED if the original alarm cause is cle ared. A display prompt appears and continues to refresh. The

IDCSU generates a test pattern and compares it to the pattern it receives. Errors indicate a problem inside the IDCSU. Press the

45MIN

”

IDCSU (only).

local

, this command will extinguish a red

NTER

key to end this test.

E

.

E

M) mon leads The screen is redrawn

with 2 lines added at the bottom.

The first new line represents a number of leads on the synchronous serial (DTE) interface.

For each data or control lead li sted, O N or OFF appears on the line below.

Data leads show ON if there are transitions occurring; control leads sho w ON if they are in a HIGH, ON, or TRUE condition.

The screen refreshes every second until

NTER

is pressed to

E

stop monitoring leads.

TXD—ON if transitions are detected in transmit data, OFF if the DTE is not transmitting data (idle condition).

RXD—ON if transitions are detected in receive data, OFF if the IDCSU is not outputting receive data.).

DTR—ON if the DTE is asserting Data Terminal Ready, OFF if DTR is not asserted by the DTE.

DSR—ON if the IDCSU is asserting Data Set Ready, OFF if the IDCSU is holding DSR low.

RTS—ON if the DTE is ass ert i ng Request To Send, OFF if RTS is not high.

CTS—ON if the IDCSU is asserting Clear To Send, OFF if the IDCSU is ho lding CTS low.

DCD—ON if the IDCSU is asserting Data Carrier Detect, OFF if the IDCSU is holding DCD low.

LL—ON if the DTE is requesting a Local Loopback by asserting the designated lead on the synchronous serial interface, OFF if the DTE is not requesting a test.

RL—ON if the DTE is requesting a Remote Loopback by asserting the designated lead on the synchronous serial interface, OFF if the DTE is not requesting a test.

TM—ON when the IDCSU is in any Test Mode, O FF if the IDCSU is not in any test.

X) exit menu Exits this menu. Returns to IDCSU

5

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Verilink TAC 2130 User Manual

Main Menu

.

Front Panel LEDs

Diagnostics

This section describes the function of the IDCSU LED indicators.

EQPT LED

The EQPT (equipment) LED i s a tri-c ol or ind ica tor wi th si x states, a s follows:

Table 5-3 Equipment LED States

State Meaning

Solid Green Typical, no DTE related alarms.

Solid Yellow The IDCSU is in a loop which faces the Equipment port

Flashing

Red Twice,

to Green Flashing

Red to Off

Flashing

Red to Yellow

Not Lit The IDCSU has no power or, if other LEDS are lit, the IDCSU is

(Repeater Loopback or Equipment Loopback). LOS detection is enabled and the DT E is not asserting the lead

that the IDCSU is optioned to require; DTR (Data Terminal Ready) or RTS (Request To Send).

Hardware error, can indicate incorrect rear module is detected.

The IDCSU is looped towar d the equipment (RLB, ELB) and errors are detected.

defective.

STAT LED

The STAT (status) LED is a three-co lor indicator with six possible states, as follows:

Table 5-4 Stat LED States

State Meaning

Solid Green Access Manager 2000 has been used to download Test System

Solid

Yellow

Solid Red Some alarm condition has occurred within the last fifteen

Flashing

Red to Off

Flashing

Red to Yellow

Not Lit No alarms have occurred within the last fifteen minutes. This is

2000 software to the module. A test is in progress and no errors are detected (a test signal is

currently being transmitted to the circuit by the CSU and the received pattern matches the transmitted pattern).

minutes on either the Network or Equipment interface. Power up self test has failed—verify that the rear module is of a

correct type. TAC 2130-T front modules require a rear connector module which of a “-T” type.

Errors have been received during a test (a test signal is being transmitted and the pattern received does not match the pattern which was sent).

the normal state for the ST AT LED.

Verilink TAC 2130 User Manual 5

-7

Diagnostics

NET LED

The NET (network) LED is a tri-color indicator with six states, as follows:

Table 5-5 Net LED States

State Meaning

Solid Green A normal signal is being received from the network (all OK).

Solid

Yellow

Solid Red Continuous errors are being re ce ived on the netw ork inte rfa c e

Flashing

Red to

Green

Flashing

Red to Yellow

Not Lit The TAC has no power or, if other LEDS are lit, the TAC is

The TAC is looped toward the network via a line loopback (LLB) or payload loopback (PLB) and no errors are being received from the network.

(e.g., LOS, LOF, RAI, AIS). Bipolar violations or CRC-6 errors are being received on the

network interface.

The CSU is looped toward the network and errors are being received (BPV or CRC-6).

defective.

Test Procedures

Verifying a T1

Testing can be divided into two categories, tests which are conducted to verify an installation where no known problems exist; and tests which result from an effort to troubleshoot a problem known to exist. Two procedures are described below.

First, in the section “Verifying a T1”, a method is described to

•

test a T1 circuit when it is expected that no trouble will be found.

Then, in the section “Troubleshooting”, a suggested method

•

for finding T1 problems is detailed.

For this procedure, a pattern is sent from a local CSU, through the entire transmit path of the T1 circuit, to a loopback in a far-end CSU, then back through the other direction of the T1 circ uit.

A loop-up code is sent, then a test pattern is transmitted. The data received from the T1 circuit is compared to the data

transmitted. If the data received is identical to the dat a transmitted, the T1 is good and can be placed into service.

Far-End Loop

To begin the verification, use the

Inband Up

command on the Diagnostics Men u. This causes the local CSU to transmit a loop-up code in the direction of the far-end CSU.

5

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Verilink TAC 2130 User Manual

Figure 5-3 Sending Loop-up Code.

Loop-up code

Diagnostics

Sending a Pattern

Local IDCSU

Far CSU

If the loop-up code reaches the far CSU and it is optioned to respond to loop-up codes, then the far CSU enters a line loop condition. Now the local CSU receives whatever it is sending.

NOTE:

Whenever the Inband Up command is used to send a loop-up code to a far-end CSU, the Inband Down command must be used later to send th e loop-dow n code. Oth erwise, th e far-end CSU will be left in a looped condition.

Begin transmitting a test pattern by using the

command.

qrss

Verify the pattern received matches the pattern transmitted by using the

Figure 5-4 Sending and Receiving Pattern

show cntr

Local IDCSU Sends pattern Checks pattern

command.

Test pattern sent

Test pattern received

Far CSU

(in Line Loop)

Results

If the QRSS pattern is receive d with no errors, the Test Error Counter will not increment.

If the Test Error Counter does increment, one of the following applies:

The far-end CSU never went into a loopback and therefore the

•

test pattern being transmitted is not being received at all. This would cause the Test Error Counter t o increment at a rapid and steady rate.

The far-end CSU did go into a loopback, but the pattern

•

received at the local IDCSU does not match the pattern transmitted. In this case the Test Error Counter might increment in uneven amounts at virtually any rate.

If the test passes, consider doing the same test with a different pattern. Some patterns can fail on a T1 which passes other test patterns. See Table 5-2 for details on the various patterns.

Verilink TAC 2130 User Manual 5

-9

Diagnostics

Test Failures

Troubleshooting

If the test fails consider one of these alternatives:

Use a loopback closer to the local CSU. The telephone carrier is

•

able to put up loopbacks at various locations along the path of the T1 circuit. Start far aw ay and work your way back to the local CSU.

If the local CSU seems defective, try using a repeater loopback.

•

Send a test pattern while the local CSU is in repeater loopback. The test pattern never leaves the CSU because it is receiving what it is sending. If this test passes, the CSU is probably OK.

If a problem is identified but not resolved by this procedure,

•

go on to the next section, “Troubleshooting”.

When a problem exists in a T1 network ap pl ication, a different approach is suggested. In the verification procedure above the initial test passed data through the entire T1 circuit, including both local and far-end CSUs. T hi s was done because no trouble was expected.

With trouble known to exist, begin by establishing what is good. Start with a repeater loopback test in the local CSU.

Repeater Loopback

The repeater loopback test takes the transmit data just as it is about to leave the network port of the CSU, and feeds it directly into the receive circ uitr y o f th e CSU. If the CSU is tran smitt ing ba d data, it will now receive bad data and the problem will be located (the CSU). If the CSU is transmitting good data but the receive circuitry is defective, the signal received fails and the CSU declares an alarm.

Use the “R” command on the Diagnostics Menu to initiate a repeater loopback. A warning message appears:

Service Affecting, Are you sure ? (Y/N)

Service Affecting, Are you sure ? (Y/N)Servi ce Affecting, Are you sure ? (Y /N)

Press “y” because you are sure. During a repeater loopback test the NET LED on the CSU should be green and the EQPT LED should be amber. The STAT LED will usually turn red because of a transient bit error condition which occurs when the test begins. Ignore the STAT LED when conducting loopback tests on a CSU.

If the EQPT LED blin ks am be r to re d du ring a repeater lo opback, errors are being detected in the DSX-1 data presented by the local equipment. Verify cabling and option compatibility.

If the NET LED is n ot green dur ing a repe ater loopba ck t est, con tact Verilink Technical Support for assistance.

5

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Verilink TAC 2130 User Manual

Diagnostics

Tips

If the repeater loopback test passes, the CSU is not defective. For troubleshooting tips related to non-CSU problems, see Table 5-6 below:

Table 5-6 Troubl eshooting Tips

Trouble Suggestion

Signal loss Verify that a T1 circuit is connected to the network port.

Verify that a proper cable is used. T1 circuits use pins 1,2,4 and 5 when presented in an RJ-45 connector.

Use a straight through cable (1 to 1, 2 to 2, etc.) on the network side of the CSU. Use a crossover cable on the DSX-1 equipment side.

The smart jack (network termination device) might be in a loopback.

Frame loss In a new installation, T1 circuits are often patched out at a carrier’s DACS or

switch until completely turned up. In this case, a pattern of unframed all ones (AIS) is kept on the T1 as a keep-alive signal. Contact the carrier and request that they “normal up” the circuit.

The CSU must be optioned for the same type of framing as the T1 carrier is providing. Framing can not be changed ar bitr arily by the user. Contact the carrier and verify the type of framing used on the T1.

CRC errors

and

BPVs

reported on a ne w

installation

When a T1 presents symptoms of CRC errors and BPVs, with no other alarms, it often is traced to problems with wiring inside the customer premise.

When the smart jack is a considerable distance from the CSU (over 50 feet), there is the risk that the high level (hot) signals in the transmit pair will induce echo into the lower level (long) signals in the receive pair. This condition is called crosstalk and is a

As telephone carriers move towa rd a policy of housing all s mart jacks in one location within commercial buildings, crosstalk-related complaints are becoming more common.

leading cause of T1 problems.

To prevent crosstalk-related issues, the transmit pair and the receive pair must be isolated from each other.

The recommended cable for T1 us es ind ivi dua lly shielded, twisted pairs; each pair has shielding around it—the cable therefore has two shields inside it, one for each pair.

If shielded twisted pair cable is not available, try to route the transmit pair and the receive pair in different cables as they traverse the building.

If the transmit and receive pairs must be routed through a multi-pair cable, such as the 25-pair or 50- pa ir ca b les fo un d in lar ge office buildings, select pairs which are not near each other in the cable.

Many smart jacks offer an option “rege ner ati on”. Thi s ca uses the sm art jac k to increase the amplitude of the signal received from the netw ork before handing it off to the CSU. Try to get the carrier to turn on this option.

CRC errors ESF T1 circuits offer CRC-6 error checking as a means of detecting changes

in data which occur on the T1 circuit. If CRC errors are reported, the errors are occu rri ng at s ome poin t betw een

the two CSUs. Verify the in-house wiring as indicated above. Contact the carrier and request they monitor the circuit. Carriers can

monitor an ESF T1 circuit for CRC errors without disrupting user data.

Verilink TAC 2130 User Manual 5

-11

Diagnostics

Trouble Suggestion

Alarm When a Verilink AS2000 CSU reports “ALARM” in the Craft interface, it is

BPV A bipolar violation is a sequence of two or more consecutive pulses of the

CSU reports no errors

but

DTE reports errors

receiving a yell o w ala rm (R AIS) on that port. T1 devices send a yellow alarm to alert the far-end device when they are in a

red alarm condition such as: Loss Of Signal (LOS), Loss Of Frame (LOF), or Alarm Indication Signal (AIS)—received all ones keep-alive.

To resolve a problem with received yellow alarms, find the trouble in the transmit path of the CSU which is receiving the yellow alarm.

same polarity. If a T1 is designed to support B8ZS, but some portion of the facility is

configured for AMI in error, the AMI portion of the T1 will attempt to “fix” the intentional bipolar violations used to represent 8 or more zeroes on a B8ZS T1.

This can manifest as BPVs or BPVs with CRC-6 errors. To verify that a T1 that is intended to be B8ZS is actually configured

properly, test the facility with a pattern of all zeroes. In some data applications using DSU functions, a condition is reported in

which the CSU does not report errors, but the customer Data Terminal Equipment (DTE) does report errors.

This usually result s from transmit d ata sa mpling e rror s at a D SU interf ace a t the opposite end of the circuit from the DTE reporting the errors.

If a CSU/DSU samples a zero when the DTE actually presented a one, the transmitting CSU creates CRC checksum data based on the improperly sampled bit(s). The data does not change on the T1 facilit y, and the receiving CSU detects no error.

Loopback Plug

These types of errors are caused by a broken phase relationship between the transmit clock provided by the DSU and the transmit data provided by the DTE.

If errors of this type are reported, try changing the ST vs INV-ST selection fo r DSU clocking in the DSU at the

opposite end

of the circuit.

For a completely reliable test of a CSU, make a T1 loopback plug and plug it in to the network port. The CSU now receives the signals it is sending.

If the CSU is sending a defective signal, it will receive a defective signal and declare an alarm. If the receive circuitry is defective, such that it cannot decode a good signal, it will be unable to decode the signal it is transmitting and will declare an alarm. Thus , if a T1 CSU does not declare any alarms wi th a loo pback plu g in li eu of the T1 circuit, the CSU is not defective. This does not rely on any tests built in to the product, thereby producing a higher confidence level in the results of the test.

With a loopback plug in the n etwor k port , any customer equipment connected to the IDCSU should see a loo pback condition. If the customer equipment can report errors, it should indicate that no errors are being received.

5

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Verilink TAC 2130 User Manual

Diagnostics

A T1 loopback plug can be made by taking a male RJ-45 connector and placing two short jumper wires where a cable would normally go. One jumper is placed f rom pin 1 to pin 5, the other jumper connects pin 2 to pin 4. See Figure 5-5 for a drawing o f a T1 loopback plug.

NOTE:

When using a T1 loopback plug it might be necessary to temporarily change the timing selection in the IDCSU. If the IDCSU is set to recover network clock, it will be trying to recover a clock it is trying to recover. The clock frequency will drift. For this test, set the IDCSU clock source to Internal. Remember to change it back after the test.

Figure 5-5 T1 Loopback Plug

RJ -45

Connector

1

245

Cable Side

8

RJ-45 plug held with plastic latching tab unseen at bottom

Verilink TAC 2130 User Manual 5

-13

Diagnostics

5

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Verilink TAC 2130 User Manual

Index

Numerics

1 in 8 5-5

1.544 MHz clock 3-7 24 Hour Bursty Errored Seconds 4-4 24 hour Errored Seconds 4-3 24 Hour Loss Of Frame Count 4-7 24 Hour Severel y Errored Seconds 4-5 24 Hour Unavailable Seconds 4-6 3 in 24 5-5 458-102119-008 3-2 458-501788-008 3-1 56K or 64K 3-5 62411 3-5 96 fifteen-minute intervals 4-3

A

Access System 2000 1-1 ALARM 5-4 Alarm 3-8 Alarm reporting 3-8 Alarm Status 5-1 Alarm threshold 3-6

B

B8ZS 3-5 balanced clock signal 3-7 bantam jacks 1-3 BES 4-2 BPVs 5-11

C

canned config 3-7 Canned configuration 3-10 CIM 2022 1-5 CIM 2052 1-5 clocking 3-6 Configuration 3-1 configuring the CSU/DSU 3-1 Connect to Craft Port 2-2 Connecting Terminal 2-2 Craft Cable 3-1 Craft Interface 3-1 CRC ERRORS 5-4, 5-11 CRC-6 error checking 5-11 crosstalk 5-11 csu err counter 5-6 CTS 3-6

D

Data Invert 3-8 DB-9 Craft Cable 3-2 DCD 3-7 density 3-5 density enforcement 3-5 Diagnostic Commands 5-4 Diagnostics 5-1 Diagnostics Menu 5-2 diu clock 3-7

download

Firmware upgrades 3-8

DSR 3-6 dte loops 5-5 DTE reports errors 5-12 dte test and mon bec 5-6 DTR 3-6

E

ejector 1-3 enable csu loops 5-5 enable dte loops 5-5 end tests 5-6 ES 4-2 Establish a loopback 5-1 Example Configur ation 2-1 exit menu 3-8 EXT 422 3-7 EXT CLK LOSS 5-4 EXT TTL 3-7 external clock 3-7

F

far element 3-3 Far End Loop 5-8 FDL 3-7 first repeater 3-5 FOREVER 5-6 format 3-5 Frame loss 5-11 framing 3-5 frequency will drift 5-13

I

IDCSU 1-2 idle code 3-6 internal oscillator 3-7 INV ST 3-6

J

Jitter Buffer 3-5 jittery signal 3-5

L

lbO 3-5 least serious 4-3 LED

blinks amber to red 5-10 EQPT LED 5-7 NET LED 5-8 STAT LED 5-7

Line build out 3-5 line code 3-5 LOFC 4-2 log off 3-3 Logging On 3-2 Login 2-2

Verilink TAC 2130 User Manual

Index-1

Loopback Plug 5-12 los lead 3-6 loss of all us er data 4-7 Loss Of Frame Count 4-2

M

Main Menu 2-2 Main Menu Commands 3-3 MI 3-5 mode 3-5 mon leads 5-6 monitor alar m s 3-3

N

near element 3-3 net loops 5-5 net signals 5-5 net test time 5-6 Network Management Programs 3-8 network provides a clock 3-7 network termination device 3-5 node 3-3 normal or forced 3-6

O

One Hour Network 4-2 ONE HOUR PERFORMANCE DATA 4-2

P

payload 5-5 Performance Menu D is p la y 4-1 PERFORMANCE MONITORING 4-1 Performance Response Messages 3-7 Performance s tat i st i cs 4-1 phase relationship 3-6, 5-12 poll far end 3-7 prm 3-7 PULSES 5-4

Status Messages 5-4 stuffing ones 3-5

T

T1 framing 3-5 T1 loopback plug 5-12 TAC 2010 1-2 TAC 2130 1-2 Terminal 2-2 Terminal Setup 3-1 Test Error Counter 5-9 test fails 5-10 test passes 5-9 Test Procedures 5-7 Test Results 5-9 THRU 3-7 TIU 2850 3-7 Transmit Clock 3-7 Troubleshooting 5-10 Troubleshooting Tips 5-11 TT 3-6 TXD 5-6

U

UAS 4-2 Unavailable Seconds 4-6

V

Verifying a T1 5-8 view alarm buffe r 3-3

Q

qrss 5-5 Quick Set-Up 2-1

R

regeneration 5-11 Repeater Loopback 5-10 Replacing EEPROMs 3-8 reset alarm 5-6 Reset modem interface 3-10 Reset Registers 4-7 RTS 3-6 RXD 5-6

S

scramble 3-5 select DS-0 3-7 send alarms 3-3 Sending A Pattern 5-9 Sending Loop-up Code 5-9 SES 4-2 shelf/slot 3-3 shielded twisted pairs 5-11 Signal Loss 5-2, 5-4, 5-11 smart jack 3-5 Solid Green 5-7 Solid Red 5-7 Solid Yellow 5-7 ST 3-6 ST vs INV-ST 5-12

Index-2

Verilink TAC 2130 User Manual

October 1999 P/N 880-503296-001-A1

VERILINK CORPORATION 127 JETPLEX CIRCLE, MADISON, ALABAMA 35758 TEL: (800) 837-4546

Verilink TAC 2130 S-T User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Scope

Product Description

Overview

Related Verilink Documents

Management Options

Module Differences

IDCSU Components

IDCSU Front Panel

Rear Connector Modules

Rear Connector Modules for TAC 2130-T

Port Usage

Quick Set-Up

Connect to Craft Port

Log In

Select the IDCSU

Resetting the STAT LED

Configuration

Using the Craft Interface

Craft Port Terminal Setup

Log In

The Configuration Menu

Configuration Menu Commands

Firmware Upgrade Procedures

Replacing Firmware ICs

Network Management Programs

Thumbwheel Switches

Thumbwheel Procedure

Thumbwheel Commands

Performance Menu

Performance Monitoring

Performance Menu Display

One Hour Network

24-Hour Errored Seconds

24-Hour Bursty Errored Seconds

24-Hour Severely Errored Seconds

24-Hour Unavailable Seconds

24-Hour Loss of Frame Count

Reset Registers

Using Diagnostics

Diagnostics

Alarm Status

Diagnostics Menu

Status Messages

Diagnostic Commands

Front Panel LEDs

EQPT LED

STAT LED

NET LED

Test Procedures

Verifying a T1

Troubleshooting

Tips

Index