Verilink PRISM 3000 User Manual

Introduction

PRISM

3000

®

TRANSPORT

Reference Manual
34-00184
3rd Edition

Table of Contents

General

Introduction ................................................................ 1-1

Design Highlights ....................................................... 1-2

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

FCC Requirements....................................................... 1-4

Canadian Emissions Requirements ............................. 1-4

Installation

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

Safety Summary .................................... ..... ...... .......... 2-1

Supplied Materials ...................................................... 2-1

Option Card Installation ............................................ 2-1

Unit Configuration ...................................................... 2 -1

Data Port Connections ................................................. 2-3

Voice Card Connection ............................................. 2-3

T1 DTE Connection .................................................... 2- 3

Network Connection ................................................... 2-4

Alarm Connection ....................................................... 2-4

External Clock Connection ......................................... 2-4

Network Management ................................................. 2-4

NMS Connection .................................................. 2-5

Supervisory Port Connection ............................... 2-6

LAN SNMP Connection ...................................... 2-6

Power Connection ....................................................... 2-7

AC Power Connection ......................................... 2 -7

DC Power Connection ......................................... 2 -7

DTE Port Configuration ............................................. 3- 5

Voice Port Configuration ............................................ 3-7

SNMP Configuration .................................................. 3 - 7

Diagnostics .................................................................. 3-8

System Utilities ........................................................... 3-11

Log Off ....................................................................... 3-12

Terminal Operation

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

System Description ..................................................... 4-1

Interface Connection ............................................ 4-1

Modem Compatibility .......................................... 4-1

Screen Components ............................................. 4-1

Interface Start Up ................................................. 4-2

Cursor Controls .................................................... 4-2

Field Types .......................................................... 4-2

Main Menu Screen ...................................................... 4-3

Alarms Screen ............................................................. 4-3

Performance Screens ................................................... 4-4

Maintenance Screen .................................................... 4-6

Test Loops ........................................................... 4-6

BERT ................................................................... 4- 6

Line Fault and Loop Status .................................. 4-7

Configuration Screens ................................................. 4-7

Operation

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

Front Panel Operation ................................................. 3-1

Maintenance Reset ............................................... 3-1

Password .............................................................. 3-2

Menu Components ............................................... 3-2

Main Menu Display ..................................................... 3-3

T1 NET Configuration ................................................ 3- 3

T1 DTE Configuration ................................................ 3- 4

Line Parameters ................................. .................. 4-7

Alarm Parameters ............................................... . 4-11

Port Parameters .................................................... 4-12

TCP / IP Parameters ............................................. 4- 13

SNMP Parameters ............................................... 4 - 13

Voice Parameters ................................................. 4-15

Utilities Screen ............................................................ 4-15

General Functions ................................................ 4-16

COA Parameters .................................................. 4-16

Telnet Option ................................ ...... ........................ 4-16

Copyright/liability

Copyright

© 1994 TxPOR T, All rights reserved. No part of this publica tion may be re produced, trans ­mitted, transcribed, stored in a retrieval system, or translated into any language in any form
by any means without the written permission of TxPORT.

Reorder # 34-00209

3rd Edition, August 19 94

TxPORT shall not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this material. TxPORT
reserves the right to revise this publication from time to time and make changes in content
without obligation to notify any person of such revision changes.

Contents of this pu blication m ay be prelimin ary and/or may be changed at an y time with out
notice and shall not be regarded as a warranty.

Documentation Disclaimer

TxPOR T makes no representation or war ranties of any kind whatsoever with respect to the
contents hereof and specifically disclaims any implied warranties of merchantability or fit­ness for any particular purpose.

ascom Timeplex

Transport 3000
CSU/DSU

User’s Guide

MC15___

January 1994

General

1.0 Introduction

design eliminates clocking problems on the high speed data
ports. The unit utilizes ‘FLASH’ memory to allow firmware
upgrades in the field. This eliminates the need for taking
units out of service for an extended time or returning u nits
to the factory for updates.

The PRISM 3000 supports all data networking needs, from
connection of a single front end processor to shared access
for video, frame relay, and voice. This approach gives the
speed and flexibility of T1 transp ort through a single point
of control. It may be configured for up to 4 high or low
speed data ports.

Operating the PRISM 3000 is easy, with a choice of three
menu driven interfaces. The front panel LCD display is
described in the ‘Operations’ chapter of this manual. The
RS232 connection to a local or remote terminal is explained
in the ‘Terminal Operation’ chapter. The TxPORT EM8000
network manager may be used for large network control
(refer to the EM8000 reference manual).

The unit provides the T1 network connection through an
advanced integral ESF CSU. Full performance T1 span
monitoring enables early detection and correction of prob­lems before they affect critical applications. The unit pro­vides a wide range of test functions to aid in rapid fault
isolation and repair. All the standard loopback functions
may be implemented. The unit also responds to inband frac­tional loop codes to accommodate fractional T1 service test­ing by the carrier. An internal BERT is provided for testing
both the network and equipment connections.

The PRISM 3000 is compatible with industry standards to
ensure access to any T1 provided service and to allow con­nection of all equipment quickly and correctly. Innovative

The unit allows complete control of the DS1 bandwidth with
flexible assignment of DS0 channels, allowing the user to
program bandwidth as needed for each application. For
example, voice bandwidth not required after hours can be
allocated to meet data processing requirements.

The integral Ethernet or Token Ring management option
provides for wide area LAN connectivity. When connecting
local area brid ging or rou ting device s to a T1 network, othe r
CSU /DSUs are out of the LAN management loop . With the
PRISM 3000, the critical T1 connection point is under con­trol of the existing SNMP management system, providing
seamless integration of LAN and WAN, and eliminating the
need for a separate CSU/DSU management system.

1.1 Design Highlights

• Three slots for customer application cards:
– Ethernet or Token Ring card with embedded SNMP/

Telnet support

– Dual high speed port cards (V.35 or EIA530,

synchronous N x 56 kb/s or N x 64 kb/s)

– High and low speed combination cards ( RS232/ V.35,

RS232 / EIA530, RS232 synchronous)

• Integral ESF /CSU provides full performance monitoring

(meets TR62411, TR54016, and T1.403 standards)

TxPORT PRISM 3000

S/N:xxx HW Revx.xx SW Revx.xx

PRISM 3000

TxPORT PRISM 3000

ALARM TEST POWER

®

TRANSPORT

CLREXIT

SELECT

General 1-1PRISM 3000

• D4 or ESF line framing

• AMI or B8ZS line coding

• Supports fractional T1 services with flexible bandwidth
allocation

• Built-in BERT function with multiple stress pa tterns and
selectable looping tests; resp on ds to inb and fract ional
loop code

• Full T1 software management through

Input Signal: DSX1 to -6 dB
Connection: RJ48C jack, 100 ¾ (± 5%)
Output Signal: Selectable DSX1 level from 0 to 655

feet in six incremental levels

Ports 1 & 2 (Ports 3 & 4 optional)

DTE
Compatibility: EIA530 (RS422), female DB25

CCITT V.35, female 34-pin

– the front panel LCD interface
– a VT100 compatible terminal interface
– the TxPORT EM8000 network manager
– an integral SNMP management interface card
– a Telnet session

• Programmable alarm thresholds

• FLASH memory allows field software upgrades

1.2 Specifications

Network Interface

Line Rate: 1.544 Mb/s (± 50 ppm)
Line Framing: D4 or ESF
Line Code: AMI or B8ZS
Input Signal: 0 to -27 dB ALBO
Connection: RJ48C jack, 100 ¾ (± 5%)
Output Signal: 3.0 V (±10%) base-peak into 100 ¾

with protection
Line Build Out: 0, -7.5, -15, -22.5 dB attenuation
Transien t Vo ltage: 1000 V protection, fu sed inpu t/output
Jitter Control: per TR62411 and T1.403
Timing Source: Internal, recovered line clock,

external DTE, station clock
Ones Density: B8ZS, Nx56 bit stuffing, alternate

fill; complies with TR62411

Equipment

T1 DTE Port (optional)
Line Rate: 1.544 Mb/s (± 50 ppm)
Line Framing: D4 or ESF
Line Code: AMI or B8ZS

Interface

Data Rate: Synchronous, Nx56 kb/s or

Nx64 kb/s (where N = 1 to 24);

independent selection on each port
Clocking: Internal or External
Data Invert: Independent selection on each port

RS232

Compatibility: EIA RS232D, Female DB25
Rate: Synchronous, 1200, 2400, 4800,

Tx Clock: Internal or External
Data Invert Soft selectable (inverts TD and RD)
Control Leads Supports DTR, RTS, CTS, DSR, and

Ethernet

Network Protocol: TCP/IP based networks
Data Rate: 10 Mb/s
Connection: Attachment unit interface (AUI)

Compatibility: AUI connects to media attachment

Standards: ISO/IEC 8802-3 (Ethernet)
MIB-II: Device identification and interface

DS1 MIB: DS1 network interface configuration,

Interface

9600, 14400, 19200, 28800, 38400,

48000, 56000, and 64000 b/s

DCD and provides switched carrier

function

Interface

DB15 female network connector with

slide latch (compliant with IEEE

802.3 Ethernet standards)

units (MAU) for 10BASE-2,

10BASE-5, and 10BASE-T

performance data. All applicable

objects & reporting traps maintained.

performance objects, and alarm

reporting traps are maintained.

PRISM 30001-2 General

Interface Standards: Internet RFC 1 157 (SNMP)

!

RFC1213 (MIB-II)
RFC1406(DS1MIB)

Mechanical

Mounting: Desktop or horizontal rack
Dimensions: 17.5" W, " H, 12.5" D

Token Ring Interface

Network Protocol: TCP/IP based networks
Data Rate: 4 or 16 Mb/s
Connection: Female DB9
Compatibility: Type 1 shielded twisted pair (STP)

networks and Type 3 unshielded
twisted pair (UTP) networks (with

adapter)
Standards: ISO/IEC 8802-5 (Token Ring)
MIB-II: Device identification and interface

performance data. All applicable

objects & reporting traps maintained.
DS1 MIB: DS1 network interface configuration,

performance objects, and alarm

reporting traps are maintained.
Interface Standards: Internet RFC 1 157 (SNMP)

RFC1213 (MIB-II)

RFC1406(DS1MIB)

Diagnostics

Performance: Monitoring per TR54016 and T1.403
Network Loops: Line loopback or payload loopback

Weight: pounds

Environmental

Operating Temp: 0° to 50° C (32° to 122°F)
Storage Temp: -20° to 85 ° C (-4° t o 1 85 °F)
Humidity: 95% maximum (non-condensing)

Compatibility

TR62411: December 1990
TR54016: September 1989
T1.403: 1989
TR54019A: April 1988

Industry

FCC Compliance: Part 15 Subpart B, Cla ss A
FCC Part 68 Reg # FXKUSA-74467- DE -N
UL Listed: E 110448
CSA Certified: LR 98859
DOC/CSO3: 1653 5193 A

Listings

Fractional Loop: Responds to inband V.54 loop code
DTE Port Loops: Loop toward DTE or network
BERT: Multiple test patterns toward network

or DTE ports

Alarms

Activation: Programmable thresholds
Reporting: Call out on alarm (COA), NO/NC

dry contacts, or the EM8000 manager
Contact Ratings: 0.6 A @ 125 VAC

2.0 A @ 30 VDC

Power

110 VAC: 0.254A, 28 W, 95 BTU max
220 VAC: 0.127 A, 28 W, 95 BTU max
48 VDC: 0.583 A, 28 W, 95 BTU max

1.3 FCC Requirements

This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15 of
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment
is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and
if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communi­cations. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user is
required to correct the interference at his own expense.

Shielded cables must be used to ensure compliance with the
Class A FCC li mits.

WARNING: Changes or modifications to this

unit not expressly approved by the party responsible for

General 1-3PRISM 3000

compliance could void the user’s authority to operate the
equipment.

This device complies with Part 15 of the FCC rules. Opera­tion is subject to the following two conditions:

1) This device may not cause harmful interference.

1.4 Canadian Emissions Requirements

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.

2) This device must accept any interference received,
including interference that may cause und e sired operation.

Notice to Users of 1.544 Mb/s Service: The following
instructions are provided to ensure compliance with FCC
Rules, Part 68:

1) All direct connections to T1 lines must be made using
standard plugs and jacks.

2) The following information may be required by the local
telephone company when applying for leased line facilities:

Port ID: P/N: FSG 3XX2/4
SOC (Service Order Code): 6.0 N
FIC (digital Facility Interface Code):

04DU9-BN 04DU9 -DN
04DU9-IKN 04DU9-ISN

USOC jack: RJ48C

3) If the unit appears to be malfunctioning, it should be
disconnected from the telephone lines until you learn
whether the source of trouble is your equipment or the tele­phone line. If your equipment needs repair, it should not be
reconnected until it is repaired.

4) The unit has been designed to prevent harm to the T1
network. If the telephone company finds that the equipment
is exceeding tolerable parameters, they can temporarily dis­connect service. In this case, the telephone company will
give you advance notice, if possible.

5) Under FCC rules, no customer is authorized to repair
this equipment. This restriction applies regardless of
whether the equipment is in or out of warranty.

6) If the telephone company alters their equipment in a
manner that will affect the use of this device, they must give
you advance warning so that you can have the opportunity
for uninterrupted service. You will be advised of your right
to file a complaint with the FCC.

7) The attached affidavit must be completed by the
installer.

8) In the event of equipment malfunction, all repairs
should be performed by our company or an authorized
agent. It is the responsibility of users requiring service to
report the need for service to our company or to one of our
authorized agents.

NOTE: End users should use existing 48 VDC battery
sources or a CSA certified power supply.

Le present appareil numerique n’emet pas de bruits
radioelectriques depassant les limites applicables aux
appareils numeriques (de la class A) prescrites dans le
Reglement sur le brouillage radioelectrique edicte par le
ministere des Communications du Canada.

1.5 Warranty

TxPORT warrants each unit against defects in material and
workmanship for a period of five years from the date the
unit was shipped to the customer. If the unit malfunctions at
any time during the warranty period, TxPORT will repair, or
at TxPORT’s option, replace the unit free of charge.

The remedies listed herein are the users sole and exclusive
remedies. TxPORT shall not be liable for any indirect,
direct, incidental or consequential damages. The owner must
return the unit to the factory, shipping prepaid and packaged
to the best commercial standard for electronic equipment.
TxPORT will pay shipping charges for delivery on return.
The customer is responsible for mode and cost of shipment
to TxPORT.

This warranty does not apply if the unit has been damaged
by accident, misuse or as a result of service or modification
by other than TxPORT personnel.

When returning the unit for warranty work, a Return Mate­rial Authorization (RMA) number must be obtained from
customer service at the address/ phone number given at the
end of this chapter. When calling TxPORT to obtain a
Return Material Authorization number or to arrange service,
please have the following information available:

• Model number(s) and serial number(s) for the unit(s).

• Reason for return and symptoms of problem.

• Warranty status (if known).

• Purchase order number to cover charges for out-of-war­ranty items.

• Name and phone number of person we can contact if we
have questions about the unit(s).

PRISM 30001-4 General

• Mode of shipment required (second day air is the normal
mode of shipment for all returned material unless other­wise specified).

As soon as TxPORT has the above information, the RMA
that must accompany the item(s) returned can be issued.

1.6 Ordering Numbers

Each PRISM 3000 is supplied with the following standard
equipment:

• Attached 19" mounting brackets

• AC power supply cord for AC powered units

• PRISM 3000 reference manual

The TxPORT PRISM 3000 unit may be purchased with the
following part numbers:

Table 1-1 PRISM Ordering Numbers

Part Number Description

BC

F-3000-001-1

0

EFG

PRISM 3000 unit

B

Special option

1

Standard unit

2

RS423 station clock input

C

Voltage option

1

110 VAC

2

220 VAC

3

-48 VDC

E

DTE Ports 1 and 2

1

V.3 5 / V.3 5

2

V.3 5 / EI A5 30

3

EIA530 / EIA530

4

EIA530 / RS232

5

V.35 / RS232

F

DTE Ports 3 and 4

0

Not installed (blank panel)

1

V.3 5 / V.3 5

2

V.3 5 / EI A5 30

3

EIA530 / EIA530

4

EIA530 / RS232

5

V.35 / RS232

G

LAN / T1 DTE option

0

Not installed (blank panel)

1

T1 DTE

2

Ethernet and SNMP

3

T1 DTE, Ethernet, and SNMP

4

Ethernet, Telnet, and SNMP

5

T1 DTE, Ethernet, Telnet, and
SNMP

6

Ethernet and Telnet

7

T1 DTE, Ethernet, and Telnet

For example, the letter C is a variable for the voltage option.
The default part number (F – 3000 – 001 – – 1110200)
is therefore a 110 volt PRISM 3000 with V.35 and EIA530
interfaces installed on Ports 1 and 2.

The PRISM products are usually shipped with the purchased
items already installed. Additional modules may be pur­chased at any time and are easily installed to accommodate
user requirement changes.

General 1-5PRISM 3000

The user may also require the following equipment options
for the installation and operation of the PRISM unit.

Table 1-2 Optional Equipment

Part Number Description

NET / T1 DTE Cables

9-1001-004 8-pin mod to 8-pin mod (4 twisted pairs)
9-1001-051-1 T1 cross-over kit, 1 ft.
9-1001-006 -1

9-1001-006 -2

9-1001-027 -1
9-1001-027 -2

9-1001-028 -1
9-1001-028 -2

9-1001-029-2 DB9 female to 6-pin RJ11 (terminal to SU PV)
9-1001-048-1

9-1001-048-2

9-1001-044 Null modem male to male (RS232)
9-1001-211 RS232 straight through male to male cable
9-1001-212 RS232 straight through male to female cable

9-1001-001 V.35 male to male null cable
9-1001-311 V.35 male to male cable
9-1001-312 V.35 male t o female cable

9-1001-511N EIA530 male to male null cable
9-1001-511 EIA530 male to male cabl e
9-1001-512 EIA530 male to female c a ble

9- 1564A - 037- 1
9- 1564A - 037- 2

9-1564A-038-1 RS449 to EIA530 null cable, male to male

9-1001-011 50-pin voice cable, male to male
9-1001-012 50-pin voice cable, male to female
9-1001-010 50-pin voice cable, male to stub

9-3000-045-1 Mounting brackets for 23 inch racks
9-8000-001-1

9-8000-001-2

8-pin mod to 15-pin ‘D’ type adapter, male
8-pin mod to 15-p in ‘D’ adapter, female

Supervisory Cables

DB25 male to 6-pi n RJ11 (modem to SUPV)
DB25 female to 6-pin R J 11 (modem to SUPV)

DB25 male to 6-pin RJ 11 (terminal to SUPV)
DB25 female to 6-pin RJ11 (terminal to SUPV)

DB25 male to two 6-pin RJ11 (terminal to NMS)
DB25 female to two 6-pin (terminal to NMS)

RS232 Cables

V. 35 Ca bl e s

EIA530 Cables

RS449 Cables

RS449 male to EIA530 male
RS449 female to EIA530 male

Voice Cabl es

Misc.

EM8000 with manual on 3-1/2 inch disk (DOS
and UNIX version, respectively)

1.7 TxPORT Customer Service

TxPOR T
127 Jetplex Circle
Madison, Alabama 35758

T e l eph one Nu mber: 800-926-0085 or

205-772-3770

Sales /Administration FAX: [phone]
Manufacturing FAX: 205 - 772- 8280

Customer Service Returns: 800-926-0085, ext. 227

Product Support
Normal Hours (8 a. m. to 5 p. m. Ce ntral Time, Mon. – Fri.):

T e l eph one Nu mber: 800-285-2755, ext. 255

Emergency (Nights / Weekends / Holidays):

205- 772-3770, ext. 255

800 -285-2755
205-603-2194 (Manager)

PRISM 30001-6 General

Installation

2.0 Introduction

This chapter contains information and instructions required
to prepare the TxPORT PRISM 3000 for use. Included are
initial inspection procedures, mountin g instructions, config­uration guidelines, connection instructions, and powering
information.

The PRISM 3000 is shipped ready for desktop or horizontal
rack mount use. Mounting brackets are attached at the front
edge of the unit. These may be removed for desktop use.

2.1 Safety Summary

2.3 Supplied Materials

The PRISM 3000 is shipped from the factory with the fol­lowing standard equipment:

• Attached 19" mounting brackets

• The PRISM 3000 reference manual

• AC power supply cord for AC powered units

The user may also require the following additional materials
for the installation and operation of the unit.

• -48 VDC power source

• Network and DTE interface cables

• 20 - gauge stranded wire (or similar) for DC power and
alarm connection

This manual contains information and warnings which must
be followed by the user to ensure safe operation and to
retain the equipment in a safe condition.

!

This WARNING sign denotes a potential hazard
to the operator. It calls attention to a procedure or prac­tice which, if not correctly performed or adhered to,
could result in injury or loss of life. Do not proceed
beyond a WARNING sign until the indicated conditions
are fully understood and met.

2.2 Unpacking and Inspection

This unit is carefully packaged to prevent damage in ship­ment. Upon r eceipt, ins pect th e shipping contai ner for dam­age. If the shipping container or cushioning material is
damaged, notify the carrier immediately and make a nota­tion on the delivery receipt that the container was damaged
(if possible, obtain the signature and name of the person
making delivery). Retain the packaging material until the
contents of the shipment have been checked for complete­ness and the instrument has been checked both mechanically
and electrically.

If the contents of the shipment are incomplete or, if there is
mechanical damage or defect, notify TxPORT. If the ship­ping container is also damaged, or the cushioning material
shows signs of stress, notify the carrier of the damage as
well as TxPORT. Keep the shipping materials for carrier’s
inspection. TxPORT will arrange for repair or replacement
without waiting for claim settlement.

For specific applications, the user may require additional
cables and adapters for the installation and operation of the
unit. The interface requirements of any application may be
met by using the appropriate cable. Standard cables and
TxPORT ordering numbers are listed in Section 1.6 on page

1-5. Contact TxPORT for any needed assistance in cable

selection.

2.4 Unit Configuration

Hardware switch settings are not required on this unit. Con­figuration is performed using any of the following methods:

• The front panel LCD interface (refer to the ‘Operation’
chapter of this manual).

• A terminal connected to the ‘SUPV’ or the ‘NMS’ port
(refer to the ‘Terminal Operation’ chapter).

• The TxPORT EM8000 element manager (refer to the
EM8000 reference manual).

The PRISM 3000 provides non -volatile memory retention
of unit configuration in the event of power failure. This fea­ture allows the unit to automatically restore normal service
following a power loss. Note, however, that when the unit is
stored without power for an extended period, the battery
may drain and some parameters may become corrupted.

Therefore, when the unit is first received for installation or if
power has not been applied for an extended period of time, a
factory default ‘maintenance reset’ operation should be per­formed on the unit. Refer to the procedures detailed in Sec-

tion 3.1.1 on pa ge 3-1.

Installation 2-1PRISM 3000

DC Version

ON

2A

OFF

250 V

DCV RET GND

1 2 3

AC Version

110/220 VAC 1.0A .4A/.2A

Figure 2-1 PRISM 3000 Rear Panel

ETHERNET

ALARM

l

RELAY

NMS

IN

O

NC C NO GND

NMS
OUT

SUPV

STA
CLKT1DTET1NET

PORT 2 PORT 1PORT 3PORT 4

5

1098764 11 12 14

13

Index Control/Indicator Function

1 DC Power Switch This switch turns the DC power ON or OFF.
2 DC Fuse This DC fuse is rated at 2.0 Amp.
3 DC Connection 48 VDC power is connected to ‘DCV’; the return is connected to ‘RET’. See Section 2.11.2 on page 2-6.
4 AC Connection This 110/220 VAC power receptacle is rated at 50-60 Hz, 0.6 A / 0.3 A. See Section 2.11.1 on page 2-6.
5 AC Fuse This AC fuse is rated at 1.0 Amp and is shipped with a spare.
6 AC Power Switch This switch controls the AC power (position I is ON and position O is OFF).
7 Alarm R elay The ‘Normal l y Cl osed’ alarm connects to NC & C. The ‘Normally Open’ alarm conn ect s to NO & C.
8 NMS This is the network management system input/output. Refer to Section 2.10.1 on page 2-4.

9 SUPV Supervisory port connection. Refer to Section 2.10.2 on page 2-4.
10 Station Clock The N x 56/64 kHz or 1.544 MHz exter nal station clock connector. Refer to Section 2.9 on page 2-3.
11 T1 DTE The T1 DTE port for drop and insert applica ti ons. Refer to Section 2.6 on page 2 -3.
12 T1 NET The T1 network port. Refer to Section 2.7 on page 2-3.
13 Slot 1 - Ethernet This is the 15-pin Ethernet or Token Ring connection. Refer to Section 2.10.3 on page 2-5.
14 Ports 1 through 4 Two cards with up to two ports each may be inserted into each of these slots. Ports 1 and 2 show a combi-

nation of V.35 and EIA530 cards.

PRISM 30002-2 Installation

2.5 Data Port Connections

The PRISM 3000 is available with 2 or 4 high speed data
ports installed in Ports 1 through 4 on the rear panel (refer to

Figure 2- 1 on page 2 - 2). Each slot may contain two ports.

The ports are configured as data communications equipment
(DCE) for connection to data terminal equipment (DTE) and
may be equipped with any combination of V.35 or EIA530
compatible interfaces. Pin assignments for both the V.35 and
EIA530 interfaces are given in Appendix A.

!

Warning: FCC rules require that interconnecting
cables carrying high speed data be shielded appropri­ately in order to minimize radio frequency interference.

2.6 T1 DTE Connection

The PRISM 3000 is supplied with a T1 DTE port, which
functions only if the unit is equipped with the T1 DTE inter­face card. This function provides a DSX1 level interface
which allows the user to pass DS0 channels through the unit
from the network side to other T1 oriented equipment via
the T1 DTE port.

A typical installation divides the channel usage so that DS0
channels carrying high speed data are mapped to the high
speed data ports while voice channels are passed to a chan­nel bank or a PABX connected to the T1 DTE port.

The network interface LBO level should be set as instructed
in ‘Line Build Out’ in Section 3.3 on page 3 -3. Maximum
suggested cable lengths for the connection from the unit to
the network are listed in the following table. Calculations
are based on a cable temperature of 70° F, 0.083 uF/ mile
capacitance, a 27 dB loss, and a 100 ¾, non-loaded, twisted
pair cable. PIC refers to Plastic Insulated Cable.

Cable Type Loss per 1000' Max Cable Length

26 gauge PIC 6.8 dB 4,400 ft
24 gauge PIC 5.4 dB 5,500 ft
22 gauge PIC 4.2 dB 7,100 ft
19 gauge PIC 3.0 dB 10,000 ft

The network physical interface is a standard RJ48C 8 -pin
modular jack with the following pinout assignments.

Pin T1 NET Interface

1 Data In
2 Data In

3, 6 Not used

4 Data Out
5 Data Out

7, 8 Chassis Ground

Network Disconnection: In accordance with FCC Rules,
Part 68.218(b), the user must notify the telephone company
prior to disconnecting the PRISM 3000.

The DTE DSX1 line build out level should be set as shown
in ‘DSX Level’ in Section 3.4 on page 3- 4. The T1 DTE
physical interface is a standard RJ48C 8 - pin modular jack
with the following pinout assignments.

Pin T1 DTE Interface

1 Data Out
2 Data Out

3, 6 Not Used

4 Data In
5 Data In

7, 8 Chassis Ground

2.7 Network Connection

The network side of the PRISM 3000 is referred to as the
network interface. This interface contains an ALBO (auto­matic line build out) which allows the unit to be located a
substantial distance away from the telco network interface
with a receive signal level down to -27 dB.

2.8 Alarm Connection

Alarm conditions detected by the PRISM 3000 are conveyed
at the isolated ‘A

LARM RELAY

’ output contacts on the rear
panel. NC (Normally Closed) and NO (Normally Open)
refer to the alarm contact’s relationship to C (Common)
under a ‘no alarms’ condition.

Alarm connections are made to the terminal strip using a
22 -ga uge stra nded, or similar, wire. Th e ‘Norm ally Clos ed’
alarm connects to NC & C. The ‘Normally Open’ alarm
connects to NO & C. Contacts are rated at 0.6 Amp AC or

2.0 Amp DC. Alarm parameters are discussed in Section

4.6.2 on page 4-11.

2.9 External Clock Connection

If the PRISM 3000 is to receive its timing source from a
user supplied clock other than the DTE or T1 lines, th e ‘Sta­tion Clock’ input must be connected on the rear panel. This
input is designed to accept TTL or bipolar signal levels. The

Installation 2-3PRISM 3000

station clock is commonly available as a 64 kHz, bipolar
RTZ signal referred to as a ‘composite clock’.

The unit will also accept any unframed all ones bipolar RTZ
signal with a level of 1.5 to 4 volts peak and a frequency of

1.544 MHz or any multiple of 56 or 64 kHz. An RS422/423
compatible station clock input, with the same range of input
frequencies, is also available as an option.

Figure 2-2 NMS Daisy-Chain Arrangement

EM8000

Element #1

NMS

OUT INNMS

IN OUT

The station timing is configured through the front panel
(refer to Section 3.3 on page 3- 3) or through the terminal
interface (refer to Section 4.6.1 on page 4-7). Pin utilization
of the RJ11 (6x4) connector is shown in the following table.

Pin TTL Signal Bipolar Sign al

1 Ground Ground
2 Not Used Not Used
3 TTL Clock Balanced Tip
4 Ground Balanced Ring
5 Not Used Not Used
6 Ground Ground

2.10 Network Management

The PRISM unit is fully compatible with TxPORT’s ele­ment manager, the EM8000. The EM8000 software system
can be used to manage small to large networks of TxPORT
network access products.

An element is accessed by using an RS232 connection from
the serial port of the computer running the EM8000 program
to the unit’s ‘SUPV’ or the ‘NMS’ ports. The Ethernet (or
Token Ring) SNMP port in Slot 1 may also be used for net­work management. The different connection methods are
described in the following paragraphs.

2.10.1 NMS Connection

The two 6- pin modular connectors labeled ‘NMS IN’ and
‘NMS OUT’ on the rear panel may be used for connection
to the EM8000. This port is configured in this manner to
allow the connection of multiple collocated units in a daisy
chain IN/OUT bus arrangement as shown in Figure 2-2.
The OUT port of one element is connected to the IN port of
the next element, and so on, to form a complete chain
among the group of elements.

Element #2

Last Element

IN OUTNMS

IN OUTNMS

The ‘NMS IN’ connector provides both the transmit and
receive signal pair. This port may be used for a modem con­nection or as a VT100 terminal interface (refer to the ‘Ter­minal Operation’ chapter).

The EM8000 may be connected directly into the NMS chain
between two elements if connection to the ‘SUPV’ port is
not desirable. A ‘Y’ cable is used from the EM8000 serial
port which splits the transmit and receive signals into two 6­pin modular connectors for the ‘NMS IN’ and ‘NMS OUT’
ports. See Section 1.6 on page 1-5 for ordering information.

The NMS address, NMS bit rate, and boot configuration
mode is set by the front control panel as described in Sec-

tion 3.8 on page 3-10. The physical connection of the NMS

port is a 6 -pin modular conn ector with the pinout shown in
the following table. This is a serial RS232 DCE port config­ured for 8 bits, no parity, and 1 stop bit.

Pin NMS BUS IN NMS BUS OUT

1 Not Used Not Used
2 Signal Ground Signal Ground
3 Data Out Data Out
4 Data In Not Used
5 Signal Ground Signal Ground
6 Not Used Not Used

2.10.2 Supervisory Port Connection

The rear panel ‘SUPV’ port serves several functions. The
terminal interface program may be accessed through this
port (refer to Figure 2- 3 on page 2- 5). A modem may be
connected to this port for remote access or use of the call on
alarm feature (refer to Figure 2-4 on page 2-5).

NOTE: All units on the same NMS chain must use the
same NMS bit rate.

For cabling convenience, The EM8000 workstation may be
directly connected to the supervisory port. When a group of

PRISM 30002-4 Installation

elements is connected in an NMS chain, the EM8000 may
be connected to the supervisory port of any one of the ele­ments. This element can then route messages onto the NMS
chain to reach the other elements. The call on alarm (COA)
feature works through the supervisory port only.

The supervisory port is an independent serial interface into
the PRISM 3000 and plugging into it does not interrupt the
NMS port traffic. The supervisory port bit rate must be set
by the front control panel (refer to ‘System Utilities’, Sec-

tion 3.8 on page 3-10).

The physical connection is a 6- pin modular jack with the
following pinout assignments. The port is a serial RS232
DCE port configured for 8 bits, no parity, and 1 stop bit.

Pin SUPV Port Interface

1 Control Out
2 Signal Ground
3 Dat a O ut
4 Data In
5 Signal Ground
6 Control In

2.10.3 LAN SNMP Connection

The PRISM 3000 may be equipped with an optional Ether­net or Token Ring interface for connection to the user’s
LAN (local area network). The unit’s SNMP (Simple Net­work Management Protocol) agent can then be programmed
to take advantage of the centralized status monitoring and
alarm reporting capability of SNMP managed networks. The
LAN interface is connected to Slot 1 on the rear panel.

Ethernet:

The Ethernet interface consists of a 15-pin
female AUI (attachment unit interface) connection compli­ant with ISO /IEC 8802-3 standards (formerly IEEE 802.3).
The pinout assignments are as follows:

Figure 2-3 Supervisory Port to T erminal Connection Figure 2-4 Supervisory Port to Modem Connection

Terminal (DTE)Supervisory Port

Control Out 1

Data Out 3

Data In 4

Signal Gnd 5

Control In 6

1

2

2TXD
3RXD
4RTS
5CTS
6
7 Signal Gnd
8

Control Out 1

2

Data Out 3

Data In 4

Signal Gnd 5

Control In 6

DB25

20
21
22
23
24

PRISM 3000 Rear Panel PRISM 3000 Rear Panel

l

0

l

0

Terminal

NMS IN may

also be used

RS232 to Terminal

( PN# 9-1001-028-1) ( PN# 9-1 001-027-1)

NMS IN may

also be used

RS232 to Modem

Modem (DCE)Supervisory Port

1
2TXD
3RXD
4RTS
5CTS
6
7 Signal Gnd
8

DB25

20
21
22
23
24

Modem

Installation 2-5PRISM 3000

Contact Circuit Ethernet Interface

!

!

3 DO-A Data Out (Ckt. A)
10 DO-B Data Out (Ckt. B)
11 DO -S Data Out (Ckt. Shield)

5 DI-A Data In (Ckt. A)
12 DI-B Data In (Ckt. B)

4 DI-S Data In (Ckt. Shield)

2 CI-A Control In (Ckt. A)

9 CI-B Control In (Ckt. B)

1 CI-S Control In (Ckt. Shield)

6 VC Voltage Common
13 VP Voltage Plus
14 VS Voltage Shield

Shell PG Protective Gnd (conductive shell)

The user must attach the appropriate MAU (media attach­ment unit) for connection to the existing LAN medium.
MAUs are available for connection to 10BASE-5 (Thick
Net), 10BASE-2 (Thin Net), and 10BASE- T (twisted pair).
SNMP configuration should be performed prior to connect­ing the PRISM 3000 to the LAN interface. This is described
in Section 3.6 on page 3-7 and Section 4.6.5 on page 4 -13.

Token Ring: The Token Ring interface is designed to oper­ate on both 4 and 16 Mb/s networks. For 4 Mb/s operation,
jumper J3 must be strapped across pins 1 and 2. For opera­tion at 16 Mb/s, jumper J3 must be strapped across pins 2
and 3. The Token Ring interface consists of a 9-pin female
connection compatible with shielded twisted pair (STP)
cable and complies with ISO /IEC 8802 -5 (formerly IEEE

802.5). The pinout assignments are as follows:

2.11 Power Connection

The PRISM 3000 is factory equipped for one of three pow­ering options as required by the user. The 110 VAC version
is supplied with a standard three- prong AC cord. The 220
VAC version is supplied with an unterminated cord. Both
AC versions are fused at 1.0 A.

The DC power version is equipped with terminal blocks for
power connection and is fused at 2.0 A. In all cases, a
proper ground should be connected to the ‘GND’ terminal.

Remove power before checking fuses.

NOTE: On power up, the board initialization sequence
causes a delay. During this period, the message on the
front panel shows ‘
voice card adds 6 seconds to the delay.

2.11.1 AC Power Connection

1) Connect the AC power cord to an appropriate AC power
receptacle.

2) Set the rear panel power ON /OFF switch to the ‘ON’
position (labeled ‘l’). The green power LED on the front
panel should light after the LED initialization sequence
ends. If the indicators do not light, recheck the power con­nections and the primary AC circuit breaker. Make sure the
ON/OFF switch is in the ON position.

2.11.2 DC Power Connection

Connect the ground lead before applying power

to the unit.

Calculating Checksum

’. Each

Pin Token Ring Function

1 Data In (A)
6 Data In (B)
9 Data Out (A)
5 Data Out (B)
3 + 5 Volts

2, 4, 7, 8 Signal Ground

10, 11 Chassis Ground

1) Connect a ground lead (18 to 20- gauge) to the ‘GND’
terminal. In many cases the 48V return is also ground. In
that case, both ‘RET’ and ‘GND’ should be connected to
ground.

2) Connect the 48 VDC lead (22 -gauge) to ‘DCV’. Con­nect the return lead to ‘RET’.

3) Set the rear panel power switch to the ‘ON’ position.
The green power LED on the front panel should light after
the LED initialization sequence ends. If the indicators do
not light, recheck the power connections and make sure the

Connection to unshielded twisted pair (UTP) cable may be

ON/OFF switch is in the ‘ON’ position.

accomplished using an appropriate STP to UTP media filter/
adapter (TxPORT part # 9-1001-056-1). After connec­tion to the Token Ring LAN, the unit must be powered down
and then back up to allow the interface to perform a self-test
on the network.

PRISM 30002-6 Installation

Operation

bottom line displays the unit serial number and the
hardware/software revision numbers. The unit may be
accessed by pressing any front panel key.

3.0 Introduction

This chapter describes the screens and menus associated
with the TxPORT PRISM 3000 front panel LCD interface.
The ‘Terminal Operation’ chapter discusses the screens and
menus associated with the external terminal interface. In
general, the options are the same for both interfaces.

The illu stration on this page depicts the front panel which
has three LED indicators, an LCD screen, and five control
buttons. The table below the illustration is referenced by
number to the front panel controls and indicators along with
a brief description.

NOTE: Throughout this manual, all the factory default
settings are shown underlined

.

3.1 Front Panel Operation

After power is applied and the unit performs a self test, the
idle display screen appears as shown in the illustration

below. The top display line is text that may be user pro-

grammed (see ‘User Info’, Section 3.8 on page 3- 10). The

3.1.1 Maintenance Reset

The PRISM 3000 provides non -volatile memory retention
of unit configuration in the event of power failure. This fea­ture allows the unit to automatically restore normal service
following a power loss. Note, however, that when the unit is
stored without power for an extended period, the battery
may drain and some parameters may become corrupted.

Therefore, when the unit is first received for installation or if
power has not been applied for an extended period, a factory
default ‘maintenance reset’ operation should be performed.
This is done by pressing and holding the ‘ ’ button

CLR

and then applying power to the unit. Hold this key until the
‘RAM CLEARED’ message appears. This procedure installs
the predefined ROM configuration to eliminate the possibil­ity of data corruption. The battery is fully charged after
power has been applied for 160 hours.

NOTE: The maintenance reset operation sets all
parameters to the factory default ROM settings and
zeros all performance registers.

Front Panel Controls and Indicators

TRANSPORT

TxPORT PRISM 3000
S/N:xxx HW Rev x.xx SW Rev x.xx

ALARM TEST POWER

CLREXIT

SELECT

PRISM 3000

1

Index Control/Indicator Function

1 LCD Display This 2-line, 40-character wide window provides access to unit configuration, diagnostics, and utilities.
2 ALARM (red) This LED lights continuously when the unit is in an active alarm condition.
3 TEST (yellow) This LED lights continuously when line or DTE loops are set or if the BERT function is operating.
4 POWER (green) This LED lights continuously when power is applied to the unit.
5 EXIT Pressing this button returns the user to the previous menu.
6 CLR Pressing this button will either move the cursor one character to the right or it will clear the error counts.

Pressing this button on power up resets all p a rameters to the factory defaults.
7 Pressing this button allows the user to scroll up through the elements/parameters.
8 Pressing this button allows the user to scroll down through the elements/paramete r s.
9 SELECT Pressing this button accesses a submenu or sets a parameter to the displayed value.

2 3 4 5 6 7 8 9

®

Operation 3-1PRISM 3000

3.1.2 Password

Menu Element

Main Menu

>

Diagnostics

Cursor

Menu Title

If no password has been programmed, the password prompt
will not appear and the PRISM 3000 proceeds directly to the
menu system. The unit is factory shipped without a pro­grammed password. The process of setting a password is
described in ‘Edit Password’, Section 3.8 on page 3 -10.

If a password has been programmed, the password screen
appears when any key is pressed. Each character must be
entered using the up and down arrow keys until the desired
character is displayed. Using the up arrow, the characters
scroll through ‘0-9’, ‘A-Z’, and ‘a-z’ for a total of 62
distinct characters. When the correct character is displayed,
press the right arrow to move the cursor to the next position.
The preceding character is accepted and disappears.

Password Screen

Enter Password: A

/ =Letter Select=Done = move

Continue this pattern until the last character is selected.
Press the right arrow once more and then press <Select>. If
the password is correct, the unit will advance into the m enu
system. If the password is entered incorrectly, the idle dis­play is returned and the user may try again.

NOTE: The password is case sensitive. Lower case and
upper case characters must be entered exactly as they
were programmed.

3.1.3 Menu Components

The PRISM 3000 front panel display consists of three com­ponents: a menu title, a menu element, and a cursor. These
components are shown in the following screen using the
Main Menu as an example.

Main Menu Screen

Menu Title: The menu title is the gen eral classification of

functions currently accessible to the user.
Menu Element: There are three types of menu elements. In

this manual, the distinctio n is made by the box type shown
in the ‘menu diagrams’.

1) A large, solid box indicates user selectable menus with
lower level menu items.

2) A dashed box lists user selectable parameters. Pressing
<Select> executes the displayed configuration.

3) A small, solid box (with small type) indicates either a
non -selectable status or a field in which a particular value
may be entered.

For example, refer to the menu diagram on the bottom of

page 3- 3. The upper level menus are shown within a large,

solid box. This indicates that these items are user selectable
menus. The lower level menus are shown within dashed
boxes to indicate that these items are user selectable param­eters. The small, solid boxes under ‘Alarm Thresholds’ indi­cate that values may be entered in these fields.

If the menu element contains a submenu, it is accessed by
pressing <Select>. The menu element becomes the menu
title and the next lower level in the hierarchy becomes the
menu element. For example, if the menu element is ‘T1

NET Configuration’, pressing <Select> wil l move ‘T1
NET Configuration’ up to the menu title level and
‘Framing Type’ will move up to the menu element level.

Cursor: The cursor first appears on the left side of the dis­play as seen in the top example of the screen shown below.

T1 NET

Configuration

(Section 3.3

on page 3-3)

Configuration

(Section 3.4

on page 3-4)

T1 DTE

DTE Port

Configuration

(Section 3.5

on page 3-5)

Main Men u Diagra m

MAIN MENU

Log OffLog On

SNMP

Configuration

(Section 3.6

on page 3-7)

Diagnostics

(Section 3.7

on page 3-8)

System

Utilities

(Section 3.8

on page 3-10)

PRISM 30003-2 Operation

When the element is a user selectable function, pressing

T1 NET Configuration

Line Code ............. AMI

<

<Select> moves the cursor to the right with the arrow point­ing left (

) as seen in the second screen below.

<

Example of Cursor Movement

T1 NET Configuration Screen

T1 NET Configuration

>

Framing Type .......... ESF

T1 NET Configuration

Framing Type .......... ESF

<

This allows the user to scroll through the options available
for that function using the arrow keys. Pressing <Select>
again sets that parameter. Pressing <Exit> returns the cursor
back to the left. The cursor will not appear when status-only
elements are displayed.

NOTE: To return to the previous screen without chang­ing a parameter, press <Exit>. Do not

press <Select>.

Pressing <Exit> again returns the previous screen.

3.2 Main Menu Display

The ‘Main Menu’ screen is the first level of access for all
the functional menus available to the user. To activate any of
these menus or submenus, use the methods described in

Section 3.1.3.

The ‘Main Menu’ diagram is shown on page 3 - 2. The sec­tion and page numbers are provided in case the user needs to
refer to a specific topic.

3.3 T1 NET Configuration

The ‘T1 NET Configuration’ screen allows the following
network configuration parameters to be set.

Framing Type: Selects the framing for the network side of
the DSU/CSU. The choices are ‘D4’ and ‘ESF

’.

Line Code: Sets the network side line coding. The choices
are ‘AMI’ and ‘B8ZS

’.

Line Build Out: Sets the line build out for the network
interface. The choices are: ‘0

dB’, ‘-7.5 dB’, ‘-15 dB’,

and ‘-22.5 dB’.
Timing: Sets the timing source to synchronize the unit’s

internal timing generators. In all cases, slips are controlled
to occur on frame boundaries at the network and/ or DSX1
ports when timing synchronization is lost. The choices are:

INTERNAL: The PRISM unit’s internal frequency stan­dard is used for all timing.

NETWORK

: Timing is derived from the network recov­ered clock (the most common selection for most applica­tions).

T1 DTE: The unit synchronizes to the clock recovered
from the DSX1 T1 DTE port. This selection only appears
on units equipped with the T1 DTE option.

STATION: Timing is derived from a bipolar or TTL com­patible clock supp lied to the unit via the rear pan el ‘STA
CLK’ connector. When this mode is selected, the timing
rate must also be set from ‘Station Input Timing’.

PORT 1, 2, 3, or 4: Timing is synchronized to the exter­nal terminal timing clock supplied from the DTE and con­nected to the selected port. Selections will only appear for
ports which are installed on the unit.

Station Input Timing: This field selects the input timing
and only appears when ‘Station’ has been selected from

Framing

Type

Line

Code

Line

Build

Out

ESF

D4

AMI

B8ZS

0 dB

-7.5 dB

-15 dB

-22.5 dB

T1 NET Configuration Menu Diagram

Timing

Internal
Network
T1 DTE

Station

Port 1
Port 2
Port 3
Port 4

Station

Input

Timing

1.544 MHz
Nx56 K
Nx64 K

(‘Station’

Timing

must be

selected)

Station

Timing

Selects the
‘N’ multi-

plier (1 -

24) for the

Timing

Input

PRM

Enable

Enable

Disable

.

Zero

Suppress

Enable

Disable

Alarm

Thresholds

Alarm Reset 030

ES 045

SES 005
LOSS 005
OOFS 005

UAS 000

RAS 000

AISS 000

BPVS 000

Operation 3-3PRISM 3000

the ‘Timing’ menu. The choices are ‘Nx56K’, ‘Nx64K’,

Framing

Type

Line

Code

DSX

Level

Channel

Assignment

ESF

D4

AMI

B8ZS

0 - 110 ft
111 - 220 ft
221 - 330 ft
331 - 440 ft
441 - 550 ft
551 - 660 ft

> 660 ft

Channels

1 - 24

Idle

Thru

Rem Com
Ports 1 - 4

Alarm

Threshold

DTE OOFS

000

and ‘1.544 MHz’.
Station Timing: This field selects the ‘N’ multiple when

‘Station Input Timing’ is set to either ‘Nx 56K’ or
‘Nx64K’ and only appears when ‘Station’ has been
selected from the ‘Timing’ menu. The ‘N’ range is 1 to 24.
For example, if N = 2 and ‘Station Input Timing’ is
set to ‘Nx64K’, the unit expects a 128 kHz clock on the sta-
tion input port (2 x 64 = 128).

PRM Enable: This field will ‘ENABLE’ or ‘DISABLE

’ the

ANSI T1.403 Performance Report Message functions.
Zero Suppression: This field determines whether ones

density insertion is activated after 15 zeros. To ensure com­pliance with TR54016, this field must be enabled. The
choices are ‘ENABLE

’ and ‘DISABLE’.

Alarm Thresholds: The PRISM can be programmed to
generate an alarm condition based on a specific level of per­formance degradation. Acceptable alarm thresholds are set
for periods of 15 minutes (900 seconds). The error types
listed below can be preset to a value between ‘0’ and ‘900’
seconds. A field set to ‘0’ causes the unit not to alarm on
that statistic. To effectively disable alarm reporting, set all
fields to ‘0’.

BPVS: Sets the bipolar violation errored seconds thresh­old. The default is 0

(disabled).

3.4 T1 DTE Configuration

The T1 DTE Configuration display allows configuration
parameters to be set the for the T1 DTE port (if equipped).

T1 DTE Configuration Screen & Diagram

T1 DTE Configuration

Framing Type ........ ESF

<

The 15 - minute time fram e is not

based on the TR54016 or
T1.403 interval boundaries, but is a time window based on
the accumulated counts over the previous 15 one-minute
intervals. In all cases, if the number of actual network
errored seconds in the previous 15 minutes reaches the pre­set threshold for the specified error type, an alarm condition
is declared.

Alarm Reset Timer: Sets the length of time after the alarm
condition clears before the alarm indicatio n is removed. A
value of zero in this field will not allow the alarm to be
automatically cleared. The default value is 30 seconds

.

ES: Sets the errored seconds threshold. The default value
is 45 seconds

.

SES: Sets the severely errored seconds threshold. The
default value is 5 seconds

.

LOSS: Sets the loss of signal seconds threshold. The
default value is 5 seconds

.

OOFS: Sets the out of frame seconds threshold. The
default value is 5 seconds

.

UAS: Sets the unavailable seconds threshold. The default

(disabled).

is 0
RAS: Sets the remote alarm seconds threshold. The

default is 0

(disabled).

AISS: Sets the alarm indication signal seconds threshold.
The default is 0

(disabled).

Framing Type: Selects the type of framing for the T1 DTE
side of the unit. The PRISM permits framing conversion
from the DTE to the Network and from the Network to the
DTE (D4 to ESF and ESF to D4). Older D4 equipment can
be supported with newer ESF spans. Using ESF framing
allows the user and the telco access to the increased service­ability and information available through the FDL protocols.
The choices are ‘D4’ and ‘ESF

’.

Line Code: Selects the type of line coding for the DTE

side of the unit. The choices are ‘AMI

’ and ‘B8ZS’.

DSX Level: Specifies the DTE DSX1 interface output
level. The choices are: ‘0-110

ft’
‘111-220ft’‘221-330ft’‘331-440ft’
‘441-550ft’‘551-660ft’‘>660ft’

Channel Assignment: This field selects which of the 24
network channels are to be passed through to the T1 DTE
port. Channels which have been assigned to a high speed
port are indicated and can only be changed through the
‘DTE Port Configuration’ menu. The default is all
channels idle

IDLE

. Choices for the unassigned channels are:

: Sets the specified channel to transmit idle code on

the T1 DTE port and ignore received data.
THRU: Sets the specified channel to pass data from the

T1 DTE port to the network and vice versa.

PRISM 30003-4 Operation

This menu also displays ‘Rem Comm’ (channels assigned as
remote communication channels) and ‘Port X’ (channels
assigned to ports are indicated as Port 1 to Port 4.

Alarm Thresholds: The PRISM can generate alarm condi­tions based on alarm thresholds set for periods of 15 min­utes (900 seconds). A field set to ‘0’ causes the unit not to
alarm on that statistic. To effectively disable alarm report­ing, set all fields to ‘0’.

DTE OOFS: Sets the DTE out of frame seconds thresh­old. The default value is 0

(disabled).

3.5 DTE Port Configuration

The ‘DTE Port Configuration’ display sets the operating
parameters for each of the high speed ports and the RS232
port. The unit does not allow conflicting configurations for
the DTE ports. Therefore, the selections for each menu item
are restricted to those that do not conflict with the configura­tion of other high speed ports or the T1 DTE Port. The
default is all ports disabled

.

‘DISABLE

’, the port is not used and no other configuration

choices for that port are available.
Port R ate:The ‘N’ parameter selects the required port bit

rate in increments of 56 or 64 kb/s, depending on the selec­tion in ‘Port Rate Multiplier’. The ‘N’ multiplier
ranges in value from 0 to 23. For example, if N is 23 and the
base rate is 64 kb/s, the data rate is 1472 kHz (64k x 23).

Starting Channel Number: This field selects the starting
channel in the 24-channel DS1 bit stream. The unit automat­ically assigns the channels which follow according to the bit
rate and the mode selected in ‘DS0 Channel Assign-
ment’. If some channels are already allocated, the starting
channel is adjusted to the first block of idle channels that
matches the bandwidth to be mapped. The starting channel
should be checked before bandwidth is allocated.

DS0 Channel Assignment: Selects whether the DTE chan­nel assignment will be made as a ‘CONTIGUOUS

’ group or
as ‘ALTERNATE’ channels. Selecting ‘ALTERNATE’ will
assure ones density.

DTE Port Configuration Screen

DTE Port Configuration

Port Rate ... 64Kx24=1536 kHz

<

When channel assignment changes are made to the high
speed ports, the remote communication link, or the T1 DTE,
the PRISM reestablishes the mapping o f all channels. This
interruption to traffic will normally result in a brief burst of
data errors on other ports.

Port Rate Multiplier: The PRISM can operate at any data
rate that is a multiple of 56 or 64 kb/s. If ‘Nx64K’ is
selected, the ones density requirements of the T1 network
line must be ensured. If ‘Nx56K’ is selected, ones density
for the selected DS0 channel is maintained. When set to

Slot X Port Y Config Menu

Port
Rate

Multiplier

Port
Rate

Starting

Channel

Number

DS0

Channel

Assign.

DTE Port Configuration Menu Diagram

Port

Transmit

Clock

Port Tra nsm it Cl ock : This field is used to select the clock
that the unit will use to sample the data transmitted from the
DTE. When set to ‘INTERNAL

’, the data is sampled directly
with the transmit data clock that i s also su pplied to the DTE
as Transmit Clock. The ‘EXTERNAL’ option uses the exter-
nal clock from the DTE. The ‘OVERSAMPLED’ option is
used to operate the port as a low speed asynchronous port.
In this mode, the port rate should be se t to at least 3 times
the asynchronous data rate (depending on the degree of
allowable distortion for the particular DTE equ ipment used).

Invert Data: In the invert mode (YES), transmit and receive
data are inverted at the port interface. This function may be
used as a means of guaranteeing ones density when the data
is composed of SDLC type protocols. The choices are ‘YES’
and ‘NO

Invert

Data

’.

CTS

Control

DSR

Control

DCD

Control

V.5 4

Loop

Alarm on

DTR Loss

N x 56K
N x 64K

Disable

Selects
the ‘N’

multiplier

for

‘Port Rate

Multiplier’

(0 - 24).

Channel 1
Channel 2

Channel 24

Contiguous

Alternate

Internal

External

Over-

sampled

No

Yes

Internal

Force

True

Force

False

Internal

Force

True

Force
False

Internal

Force

True

Force
False

Enable

Disable

Operation 3-5PRISM 3000

Disable

Enable

CTS / DSR/DCD Control: Setting any of these three fields

Port 1 / Port 3

Configuration Menu

Port

Rate

DS0

Channel

Assign.

CTS

Control

DCD

Control

None
1200 bps
2400 bps
4800 bps
9600 bps

14400 bps

Contiguous Internal

Force

True

Internal

Force

True

19200 bps
28800 bps
38400 bps
48000 bps
56000 bps
64000 bps

to ‘FORCE

TRUE’ or ‘FORCE FALSE’ allows the forcing of
the port control lead output state. ‘INTERNAL’ allows for
normal operation as shown in the diagram of the ‘High
Speed Data Port’ below.

High Speed Data Port

Connector Pin Numbers

EIA530

V.35 RS449

PRISM

3000

The PRISM has an internal BERT tester with ten available
stress patterns. The user may utilize this capability by loop­ing one end of the DS0 channel assigned to the RS232 port
and BERT toward it from the other end. RS232 BERT is
valid only at 56kb/s and 64kb/s toward the DTE.

The following RS232 menu diagram is an addition to the
‘DTE Port Configuration’ menu diagram. It shows the mod­ified menu options available for the RS 232 port. The differ­ences are explained in the following paragraphs.Note that
only Port 1 and Port 3 are available for the RS232 option.

T1 Receiver In Sync

RTS

CTS

DTR

DSR

DCD

4/19

5/13

6/22

8/10 F 13/31

V.54 Loop: Selecting ‘Enable

C7/25

D9/27

Port Enabled

12/ 30H20/23

E11/29

T1 Loss Of Signal

Alarm State

’ allows the unit to respond
to inband V.54 loop commands. If ‘Disable’ is selected,
the unit ignores these commands.

Alarm on DTR Loss: Selecting ‘Enable’ allows the
PRISM to alarm on loss of DTR. The default setting is
‘Disable

’.

EIA530 or RS232 Option

The RS232 low speed port option is available as a combina­tion board with an EIA530 or V.35 port. The RS232 port
provides a synchronous DCE interface at subrate speeds for
connection to customer DTE. The data from the port is
placed in a single selected DS0 channel of the T1 network
data stream. For switched carrier applications, the RS232
port provides local RTS to remote DCD control lead opera­tion at all speeds below 64 kb/s.

The RS232 port provides a bidirectional loop for isolating
problems associated with the interface. Looping the port
does not affect data traffic assigned to any of the other DTE
ports. The port loop may be activated from the front panel,
the terminal interface, the EM8000, Telnet across the Ether­net or Token Ring interface, or by the reception of inband
V. 54 loop code. The unit can also be instructed to transmit
the inband V.54 loop code to loop the corresponding remote
end port.

RS232 Modifications to DTE Port Menu

AND

AND

Port R ate : This parameter selects the required port bit rate
for RS232 operation. The ‘None’ option disables all opera­tions for this port.

DS0 Channel Assignment:‘CONTIGUOUS’ is the only
option available for RS232 operation.

CTS /DSR/D CD Control: The control leads on the RS232
port function as explained in the following paragraphs.

DSR Control: May be set to ‘Force True’, ‘Force
False’, or ‘Internal’. The ‘Internal’ option has

DSR ON if the port is enabled and OFF if it is disabled.

DCD Control: May be set to ‘Force True’ or ‘Inter-
nal’. If set to ‘Internal’, DCD is ON when data is

being received from the remote end and is OFF when idle
code is being received from the far end. Setting to ‘Force
True’ keeps DCD ON regardless of whether data or idle
code is being received.

CTS Control: May be set to ‘Force True’ or ‘Inter-
nal’. The setting of CTS Control has an effect on both the

CTS control lead presented to the DTE and on the transmit
data from the DTE toward the remote end.

If set to ‘Internal’ the CTS control lead will follow the
RTS control lead from the DTE after a delay of 21 UI (± 1
UI). The data transmitted to the remote end will also be
determined by the state of the RTS control lead. When RTS

PRISM 30003-6 Operation

is ON, the transmit data from the DTE is sent to the remote
end, and when RTS is OFF, idle code is sent to the remote
end. If set to ‘Force True’ the CTS control lead will
always be ON and the RTS control lead from the DTE will
be ignored. Thus the transmit data from the DTE will
always be sent through to the remote end.

3.6 SNMP Configuration

The SNMP (Simple Network Management Protocol) inter­face card is an option for the PRISM unit. It provides seam­less integration and control of CSU /DSU functio ns within
an existing SNMP managed LAN/WAN environment.

SNMP Menu Diagram

Unit PRISM I P Address: This field accepts IP addresses.

Each device connected to the LAN is required to have a
unique IP address identifier.

Subnet Mask: This field is provided to manually override
the subnet mask setting which is otherwise discovered by
the SNMP agent.

Router IP Address: This field accepts the IP address of a
default router, if one is present.

Filter IP Address: These eight fields accept the IP address
of the source packet filter. If any of these fields are set,
access is allowed only by the specified IP addresses.

Trap IP Address: This field accepts the IP address of a
network device where alarm reporting traps are to be sent.
The PRISM detects and reports T1 network alarms and pro­vides several options for reporting them, one of which is
SNMP traps. When a network alarm occurs, the unit sends a
trap message to up to 6 destinations on the user’s network.

SNMP Set: This field enables or disables the set command
responses. Refer to Appendix ___ for detailed information
on these responses.

Unit

IP

Address

Edit

Read

Comm.

Subnet

Mask

Edit

Write

Comm.

Router

IP

Address

Edit

System

Contact

Filter IP
Address

1 – 8

Edit

System

Name

Trap IP

Address

1 – 6

Edit

System

Location

SNMP

Sets

Device

Info

SNMP management stations are able to collect and analyze
data from all network devices which comply with the SNMP
protocol and to manage those devices. SNMP provides a
standard means to monitor the status of all compatible net­work elements.

The ‘SNMP Configuration’ screens are accessible if the unit
is equipped with the Ethernet or Token Ring SNMP inter­face option. It allows for the entry of those parameters
required for proper operation of the unit with an Ethernet or
Token Ring bas ed LAN manage r.

The SNMP menu consists of alpha - numeric entry only (no
selectable parameters). The following 3 menu items use the
format shown in the ‘IP Address’ screen. Each number has a
range from 0 to 255 and is separated by a period.

IP Address Screen

SNMP Configuration

Unit IP Addrs.....1

32.016.232.000

<

The following 5 menu items use the format shown in the
‘System Edit’ screen. The top line in each screen accepts a
string of up to 255 characters which identifies the appropri­ate group, person, device function, or unit location. Each
character is entered using the up or down arrow keys until
the desired character is displayed. The right arrow moves
the cursor to the next position. Continue this pattern until
the last character has been selected and press <Select>.

System Edit Screen

public

/ =Letter Select=Done =move

Read Community: This display accepts a character string
identifying the group authorized to perform read operations.
The default setting is ‘public

’.

Write Community: This display accepts a character string
identifying the group authorized to perform write opera­tions. The default setting is ‘private

’.

System Contact: This display accepts a character string
identifying the person responsible for a network device. The
default setting is ‘no system contact

’.

System Name: This display accepts a character string iden­tifying the functionality of the network device. The default
setting is ‘no system name

’.

System Location: This display accepts a character string
identifying the physical location of network device. The
default setting is ‘no system location

’.

Operation 3-7PRISM 3000

Device Info: This field disp lays th e Ethe rnet or Token Ring
hardware/software revision level.

LLB: The local loopback selection loops data received at
the T1 DTE interface back toward the T1 DTE. Data is
also passed through to the network.

3.7 Diagnostics

The ‘Diagnostics’ screen allows test and maintenance func­tions to be performed on the T1 network, the T1 DTE port,
and the high speed ports. The PRISM recognizes inband and
FDL out- of- band loopback requests. The unit also recog­nizes local testing and remote network management loop­back test configurations. The PRISM supports many ways to
test the service to and from the unit.

Diagnostics Screen

Diagnostics

T1 Network Loop ---- Loop Far

The PRISM monitors network loopback commands and
activates loops based upon their reception as described in
TR54016 and T1.403 (loops may also be activated through
the EM8000 element manager). Refer to the ‘Diagnostics
Loop Functions’ diagram page 3- 10 for a depiction of the
loop modes. Also, refer to the ‘Loopback Diagrams’ shown

on page 4-6. The Diagnostics menu allows for loopback and

BERT functions as explained in the following paragraphs.
T1 Network Loop: The looping choices are as follows

(note that far loops are not allowed during BERT).

: Clears network loops.

NONE
LOOP FAR: Sends loop codes over the network to the far

end unit to force it into a NET LLB.
UNLOOP FAR: Sends unloop codes to the far end unit to

remove the loop condition.
NET PLB: The payload loopback selection loop s th e da ta

back toward the network. Framing, CRC, and FDL are
regenerated and all ones are passed to the DTE ports.

NET LLB: The local loopback selection loops data
received from the network back toward the network.
Received data is also passed through to the DTE ports as
normal.

NET MLB: Network maintenance loopback loops data at
the T1 DTE port back toward the network (passes network
data to DTE and return d ata to network). This affects only
network channels assigned to the T1 DTE.

DTE MLB: The T1 DTE maintenance loopback loops
network data back toward the DTE at the network inter­face. Data is also passed through to the network.

T1 DTE Loop: The looping choices are as follows:

NONE

: Clears DTE loops.

<

Port Loop: Ports are indicated as Port 1 through Port 4.
The looping choices for each port are as follows:

: Clears port loops.

NONE
NEAR: A bidirectional fractional loop is set at the port

interface.
SEND LOOP: A V.54 in-band loop cod e is transmitted to

the far end unit to force it into a NEAR loop mode on the
selected port.

SEND UNLOOP: Unloops the far end unit.

BERT Functions: The following menus offer selections for
the BERT port, direction, and pattern along with test results.

BERT Port: This menu item selects the port to be looped.
The ‘NONE’ setting disables the BERT generator. The
‘NETWORK’ option tests all channe ls mapped to the net­work. The ‘T1 DTE’ option tests all channels associated
with the T1 DTE port. Selecting a single port tes ts all the
channels associated with that port.

BERT Channel: This menu item is available only when
‘BERT Port’ is set to ‘Network’. This allows selection
of a specific DS0 channel (1 to 24) to be tested. Only
unassigned (idle) channels will appear as selections. If
‘ALL’ is selected, the entire T1 bandwidth will be tested.
If ‘IDLE’ is selected, all unassigned channels are tested.

BERT Pattern: This item specifies which pattern will be
transmitted toward the port being tested. The choices are
‘1 IN 8’, ‘3 IN 24’, ‘ALT’, ‘CLEAR
‘511’, ‘2047’, ‘2

BERT Direction: Selects which direction to send the test
pattern. The choices are ‘Toward Network’ and
‘Toward DTE’. If the ‘BERT Port’ menu is set to
‘Network’, the BERT direction is automatically forced
toward the network and this option does not appear.

BERT Results: The following BERT status and error
counts are available through this selection:

Sync Status: This field displays the current state of pat­tern sync during a test. If no test is in progress, ‘NO
SYNC’ is displayed.

Elapsed Time: This field displays the elapsed time
since a timed test began. A value is displayed only
when a test is running (in the HH:MM:SS format).

Bit Errors: This field displays the total number of bit
errors detected since the test began or since error statis­tics were last cleared.

Errored Seconds: This field displays the number of
errored seconds that have been detected since the test
began or since error statistics were last cleared.

15

-1’, ‘220-1’, and ‘223-1’.

’, ‘QRSS’, ‘63’,

PRISM 30003-8 Operation

Pattern Sync Losses: This field displays the number of
times during the test period that the BERT pattern
detector lost sync.

Reset Bert Test: When set to ‘YES’, the BERT error
counts and elapsed time values are cleared to zero. This
parameter then returns to ‘NO’ automatically.

Network Performance Stats: The PRISM records perfor­mance statistics as described in TR54016. The unit is
equipped with a dual set of data registers with individual
resets that maintain these statistics. One set is accessed by
the network service provider (telco). The other set is
accessed by the user through the front panel, terminal inter­face, or the EM8000 element manager.

Performance data is collected in 15-minute intervals for the
preceding 24- hour period. The intervals (numbered Int# 00
to Int# 96) are viewed by pressing <Select> and using the up
and down arrow keys. Interval 00 is the most recently stored
interval and interval 96 is the interval which is 24 hours old.
Pressing the <Exit> or <Select> keys returns the cursor to
the left. This allows scrolling to another data type.

When a specific interval is selected for viewing performance
data, all other parameters will reflect that interval until
another interval is selected.

Errored Seconds: ES displays the number of one second
intervals where at least one CRC or out-of-frame error
event occurred.

Severely Errored Secs: SES displays the number of one
second intervals where at least 320 CRC errors were
detected or at least one out-of-frame event occurred.

Loss of Frame Secs: LOFS displays the number of sec-
onds that the network interface is out of frame sync.

Unavailable Seconds: UAS displays the number of one
second intervals of unavailable service. Counting begins
when 10 consecutive severely errored seconds (CSES)
occur and ends when 10 consecutive seconds pass with no
SES. The initial 10 seconds are included in this count.

Controlled Slip Seconds: CSS displays the number of one
second intervals where at least one controlled slip
occurred.

Bipolar Error Secs: BPES displays the number of one
second intervals where at least one bipolar code violation
occurred.

Daily performance data for the parameters listed above
appears following the 15 -m inute interval listings. It is col­lected in 24 -hour intervals for the preceding 30 -day period.
The days (from Day#00 to Day# 30) are viewed by press-
ing <Select> and using the up and down arrow keys.
Day#00 is the most recently stored day and Day#30 is the
oldest day. Pressing the <Exit> or <Select> keys returns the
cursor to the left.

ESF Errors: Displays the total number of ESF error
events since the counts were last reset. This value is not

T1

Network

Loop

None

Loop Far

Unloop Far

NET PLB

NET LLB
NET MLB
DTE MLB

BERT

Port

None
Network
T1 DTE

Port 1 - Port 4

T1

DTE

Loop

None

LLB

ALL

IDLE

BERT

Channel

Channel 1

Channel 24

Port 1 – 4

None

Near

Send Loop

Send Unloop

Diagnostics Menu Diagram

BERT

Performance

Clear ESF Stats

Direction

Toward

Network

1 IN 8

3 IN 24

ALT

CLEAR

QRSS

BERT

Pattern

Function

63, 511

2047

15

-1

2

20

-1

2

23

-1

2

Network

Statistics

ES

SES

LOFS

UAS

CSS

BPES

ESF Errors

BERT

Toward

DTE

Network

Alarms

None

Signal Loss

Sync Loss

AIS

Y ellow/Remote

Sync Status

Elapsed Time

Bit Errors

T1

DTE

Alarms

Signal Loss

Sync Loss

AIS

Y ello w/Remote

BERT

Results

Errored Seconds

Pattern Sync Loss

Reset BERT Test

Operation 3-9PRISM 3000

recorded by interval. Counting will stop when the maxi­mum value of 65535 is reached.

Clear ESF Stats: When ‘YES’ is selected, all user net-
work performance registers are set to zero and the param­eter returns to ‘NO’. The telco register set (accessible by
the service provider) is not cleared by this action.

Network Alarms: The network interface alarm status is
reported as one of the states shown in the following para­graphs. The front panel alarm indicator and the rear panel
alarm relay contacts are controlled solely by the user
selected ‘Alarm Thresholds’ set in the ‘T1 NET Configura­tion’ menu (see Section 3.3 on page 3-3).

SIGNAL LOSS: Indicates that the T1 receive signal level
has dropped below the level that can be detected.

SYNC LOSS: Indicates that the unit is unable to synchro­nize on the incoming T1 framing pattern.

AIS: Indicates that an unframed ‘all ones’ pattern is being
received.

YELLOW/REMOTE: Indicates that a remote (yellow)
alarm indication is being received.

T1 DTE Alarms: T1 DTE alarm status is reported using
the same parameters as defined for ‘Network Alarms’ in
the preceding paragraphs. The front panel alarm indicator
and the rear panel alarm relay contacts are a function of the
network alarm thresholds, not the T1 DTE interface.

System Utilities Screen

System Utilities

> Edit Password

Edit Password: The PRISM is factory shipped with the
password disabled

(factory default). A password is selected
by entering up to 10 alphanumeric characters. Each charac­ter is entered using the up or down arrow keys until the
desired character is displayed. The right arrow moves the
cursor to the next position. Continue this pattern until the
last character is selected and then press <Select>. The pass­word function is disabled by selecting this field and pressing
<Select> without selecting any characters.

NOTE: The password is case sensitive. During log on,
it must be entered exactly as it was programmed.

Display View Angle: The contrast of the front panel LCD
display will have a different appearance depending on
whether it is being viewed from a high angle or a low angle.
Use the arrow keys to adjust for the most suitable contrast.
There are 18 selectable values, with a default value of ‘8

’.

Time: The current time is set by ent ering each digit in the
standard 24- hour ‘HH:MM:SS’ format. Each field is range
checked and automatically limited to the appropriate range
of values.

3.8 System Utilities

The System Utilities display allows the user to perform the
various functions described in the following paragraphs.

Diagnostics Loop Functions

Network
Interface

Tx
Rx

NET LLB

NOTE: Commanded loops are
initiated by receipt of the appro­priate loop code from the net­work or the far end CSU/DS U.

DTE MLB NET PLB

Framing,

CRC, & FDL

Control

BERT

Pattern

Generator

and

Detector

Date: The current date is set by entering each digit in the
standard ‘MM/DD/YY’ date format. Each field is range
checked and automatically limited to the appropriate range
of values.

DSX1 T1 DTE Port

Receiver

NET MLB

Driver

Multiplexor

DTE LLB

DTE Slot X, Port Y

Receiver

FIFO

FIFO

Driver

Bidirectiona l fractional port loop

TX

RXD

TXD

RXD

PRISM 30003-10 Operation

User Info/Unit ID: The idle screen top line may be
changed in this field. Text is entered using the up and down
arrow keys to scroll through each character and the right
arrow key to change cursor position. The original text can be
restored by pressing <Exit> at any time during the editing
process. The screen is shown below.

restores the configuration parameters in effect when power
was lost. If set to ‘NMS’, the unit will use the configuration
parameters supplied from the EM8000 element manager
database (the unit must have a valid NM S address - fr om 1
to 250). As shipped from the factory, the unit uses the fac­tory default configurations stored in the ‘LOCAL

’ memory.

User Info / Unit ID Display Screen

TxPORT PRISM 3000

/ =Letter Select=Done =move

NMS Address: When used with the EM8000 element man­ager, each PRISM unit connected to the local daisy chain
must be programmed with a unique address in the range of
‘1’ through ‘250’. To program a number, scroll through the
digits with the up and down arrow key. Press the right arrow
key to select a digit. A valid NMS address must be selected
before the configuration can be recalled upon start up.

After software has been downloaded into the flash memory,
the RAM must be cleared. This process sets the NMS
address to ‘000’. If the unit is then powered down with this
address, it will reboot with the NMS address of ‘251’.

NMS Bit Rate: This field sets the interface speed for the
‘NMS IN’ and ‘NMS OUT’ ports. The selections are ‘1200’,
‘2400’, ‘4800’, ‘9600’, and ‘19200

’ bps.

Supv Bit Rate: This field sets the interface speed for the
supervisory port (SUPV). The selections are ‘1200’,
‘2400’, ‘4800’, ‘9600’, and ‘19200

’ bps.

Boot Mode: When the PRISM unit is powered, its config­ured is based on this selection. If set to ‘LOCAL’, the unit

Alarm Cutoff: When this menu item is set to ‘DISABLE
the PRISM reports a network interface alarm condition by
lighting the front panel indicator and activating the alarm
relay contacts on the rear panel. When set to ‘ENABLE’, the
front panel ‘ALARM’ indicator still lights during an alarm
condition, but the alarm contacts are forced to an inactive
state regardless of the alarm status.

Call on Alarm: This field controls remote alarm reporting.
Three submenus are available as follows:

Alarm Notification:

[OFF] - Disables alarm reporting.
[DIRECT] - Sends reports to a printer or terminal con-

nected directly to the supervisory port.
[DIAL] - Sends reports through an attached ‘AT’ com-

mand set compatible modem connected to the ‘SUPV’
serial port, which must dial out to a remote modem.

[DIAL NMS] - Calls the EM8000 to dump alarms directly.

Edit Primary and Secondary Dial String:

These fields are 18-character ASCII strings for the call on
alarm phone numbers used in the [DIAL] and [DIAL
NMS] modes. The unit attempts 3 times to connect using
the primary number. If all 3 attempts fail, it will attempt 3
times to connect using the secondary number (if it is not

’,

Password

Enter up to 10

characters using

and keys.

Accept and move

with right arrow.

Boot

Mode

Local
NMS

Display

View Angle

Adjusts front panel

screen contrast.

The default value

is 8

.

Alarms

Cut Off

Disable

Enable

Enter curre n t

time in

24- hour

HH:MM:SS

format.

Call On

Alarm

System Utilities Menu Dia gram

DateTimeEdit

Enter current

date in

MM:DD:YY

format.

Edit

Primary

Edit

Second.

User Info

Unit ID

Enter line of
text, such as
site location,

circuit ID for

idle top line

Edit

Element

NMS

Address

Enter 3 digits

in range of

1 - 250.

The default
value is 251

Alarm

Notifi-

cationString String ID

NMS

Bit Rate

1200
2400
4800
9600

19200

Off

Direct

Dial

Dial NMS

SUPV

Bit Rate

1200
2400
4800
9600

19200

Remote

Link

FDL

Ch. 1 - 24

None

Operation 3-11PRISM 3000

blank). If the secondary number fails, the unit waits 5
minutes and then attempts to communicate with the pri­mary number again. When a connection is detected, the
unit outputs the notification message (as described in
‘Element ID’ below) and then disconnects.

Edit Element ID: This field allows the user to enter a 29-

character ASCII string which identifies the unit to the

device receiving the alarm notification messages.
Remote Link: When the PRISM unit is used with the termi-

nal interface or the EM8000 element manager, a communi­cation link to the far end unit can be selected. The facility
data link (FDL) may be used in cases where the T1 path is
not routed through equipment that corrupts the FDL. If the
network framing mode is set to D4 or the FDL is not avail­able, a spare channel may be assigned. Possible channel
selections are those that have not been assigned for use with
a high speed port or passed through to the T1 DTE. The
choices are ‘FDL

’, ‘None’, and ‘Channels 1 - 24’.

3.9 Log Off

If the PRISM 3000 has not been programmed with a pass­word, the user may leave the menu system by pressing
<Exit> from the Main Menu. If a password has been pro­grammed, the unit prevents an inadvertent log off by requir­ing the user to press <Select> in the Log Off menu. Once
logged into the front panel, the interface will remain active
until the user logs out.

>

Log Off

Log Off Screen

Main Menu

PRISM 30003-12 Operation

Terminal Operation

4.0 Introduction

This chapter describes the screens and menus associated
with the TxPORT PRISM 3000 terminal interface, which is
a firmware application program embedded inside the unit.
The ‘Operations’ chapter discussed the screens and menus
associated with the front panel interface. Although the
options are essentially the same for both interfaces, the ter­minal interface is able to show more parameters on each
screen. The same is true for the EM8000 element manager.

Refer to Section 2.10 on page 2- 4 for further information.
Cables are available for most typical connections. Standard
cables and ordering numbers are listed in Section 1.6 on

page 1-5. Contact TxPORT for any assistance in cable

selection.
A serial bit rate of 1200, 2400, 9600, or 19200 b/s may be

selected using the front control panel (refer to ‘Supv Bit
Rate’ in Section 3.8 on page 3-10).

Both serial ports support the same custom protocols which
allow the terminal interface or the EM8000 to request and
receive performance/configuration data from the PRISM.
The unit automatically determines which protocol is needed.

4.1 System Description

The Terminal Interface requires an ANSI compatible VT100
terminal (ASCII), or a computer running an ANSI terminal
emulation program. The Terminal Interface utilizes ASCII

‘BREAK’ and ‘ESCAPE’ functions, which are implemented
differently with the various terminal emulation programs.
The documentation supplied with the terminal emulation
program should be consulted for further reference.

In addition to the 54016 and T1.403 protocols, proprietary
messages can be sent over the facility data link (FDL) from
the near end PRISM unit to the far end PRISM unit. A local
RS232 terminal connected to the unit may access a far end
PRISM. Thus, the remote unit may be queried for status and
statistics, configured, or looped for testing as if the terminal
is connected to it directly.

4.1.1 Interface Connection

The terminal may be connected to either of two 6-pin serial
RS232 ports on the PRISM 3000. One of the modular ports
is a pair of daisy chain type rear panel connectors labeled
‘NMS IN’ and ‘NMS OUT’. The othe r port is labeled ‘SUPV’.

4.1.2 Modem Compatibility

The PRISM 3000 terminal interface supports use of an ‘AT’
command set compatible modem on either, or both, of the
‘NMS IN’ and ‘SUPV’ serial ports. The modem should be
optioned to ignore DTR, enable auto answer, inhibit com­mand echo, and return verbal result codes.

NOTE: If the user calls the PRISM unit and sends the
‘

BREAK

’ command before receiving the ‘

message, the modem will hang up.

4.1.3 Screen Components

Terminal interface screens have several components com­mon to all screens and will be discussed in dividually in the
following paragraphs. These common elements are shown in
the ‘Password Screen’ (refer to Screen 4-1 on this page).

Device Type and Revision: The device type (the PRISM

3000) and the revision control numbers are shown in the
upper left corner. The first number is the hardware revision
and the second number is the software revision. Information
is displayed for the near end unit (connected directly to the
terminal) on the top line, and for the far end unit (connected

CONNECT

’

Screen 4-1 Password

3000

DSU x.xx/x.xx PRISM

No Far End Response Atlanta: (3) Time: HH:MM:SS

------------------------------- PASSWORD SCREEN --------------------------------

Enter Password: (**********)

Start Date: MM/DD/YY
Start Time: HH:MM:SS

----------------------------------- Messages -----------------------------------

3000

Date: MM/DD/YY

Terminal Operation 4-1PRISM 3000

to the network T1 interface) on the second line. Refer to this
information when contacting the factory with inquiries.

The far end information is available only for TxPORT prod­ucts that support a proprietary message set. If the far end
does not support these messages but does support the stan­dard 54016 protocol, then the far end information is dis­played as ‘GENERIC 54016 FAR END’. If the far end does
not respond to either proprietary or 54016 messages, then
‘NO FAR END RESPONSE’ will be displayed. If the far end
echoes the FDL messages transmitted by the near end unit,
then ‘FAR END LINE LOOP’ is displayed.

Date /Time: The top right corner of the terminal screen dis­plays the current date and time. The setting of these func­tions is described in Section 4 .7.1 on page 4-15.

Element ID: Unit Address: Below the header (PRISM

3000), the ‘Element ID’ is displayed (refer to Section 4.7.2

on page 4 -15). Next to the ‘Element ID’ is the unit’s NMS

address (refer to Section 3.8 on page 3-10).
Menu Title: The menu title (third line, center) denotes the

general classification of functions currently accessible by
the user (such as ‘Alarms’ or ‘Performance’).

Messages: This line may display diagnostic messages.

address is entered, that address is echoed back to the termi­nal. Send another ‘BREAK’ to start a new session.

The ‘Main Menu’ screen (Screen 4- 2) is then displayed if
no password has been specified. The ‘Utilities’ menu (Sec-

tion 4.7.1 on page 4-15 explains the setting of the pass-

word). In the ‘Password’ screen (Screen 4-1), the user must
enter the correct password to obtain access to any other
menu. Note th at the password is case-sensitive.

4.1.5 Cursor Controls

The terminal interface utilizes a highlighted cursor to make
selections from menus and select fields within screens to be
operated on. The cursor is moved in different ways, depend­ing on the terminal emulation program used. Most programs
allow use of the <tab> and <shift -tab> keys. Others allow
use of the 4 arrow keys. Once a field is highlighted, it is
manipulated as described in Section 4.1.6.

For keyboards which do not have these standard keys or
have only some of them, an alternate set of cursor control
commands is provided. Each command is performed by
pressing a letter key while holding down the <Ctrl> key.
Alternate commands may be freely mixed with the keyboard
commands at the user’s discretion.

4.1.4 Interface Start-Up

Once a compatible terminal is properly connected to the
unit, a Terminal Interface session is started by sending a
‘BREAK’ to the unit. If the NMS port is us ed, the unit then
responds with the prompt “Enter Unit Address”. To
activate the first (or only) unit, simply press <return>. To
select a specific unit, enter the address number of the
desired unit and press <return>.

The “Enter Unit Address” prompt will time out after
10 seconds. If this happens, send another ‘BREAK’. To
select another unit, exit the current Terminal Interface ses­sion, send a ‘BREAK’, and repeat the process. If an invalid

Screen 4-2 Main Menu

3000

DSU x.xx/x.xx PRISM

3000 DSU x.xx/x.xx Huntsville: (2) Time: HH:MM:SS

------------------------------------- MAIN -------------------------------------

Alarms
Performance
Maintenance
Configuration
Utilities

Keyboard Command Alternate Comm and

< left arrow > < Ctrl - S >

< right arrow > < Ctrl - D >

< up arrow > < Ctrl - E >

< down arrow > < Ctrl - X >

< backspace > < Ctrl - H >

< delete > < Ctrl - Z >

4.1.6 Field Types

Each screen is made up of fields. The two basic field types
are ‘user selectable’ and ‘display only’. If the highlighted

3000

Date: MM/DD/YY

----------------------------------- Messages -----------------------------------

PRISM 30004-2 Terminal Operation

cursor can be moved to a field, it is a user selectable field.
All other fields are for display only. User selectable fields
allow for changes to be made or commands to be executed.

Fields without brackets or parenthesis are ‘display only’.
They cannot be changed on the screen. Most user selectable
fields are enclosed in brackets or parenthesis and are
described in the following paragraphs.

Fields enclosed in brackets [ ] offer the user a list of selec­tions from which to choose. The selections may be toggled
by pressing the <spacebar>. Each time it is pressed, a new
item appears. When the appropriate choice is displayed,
press <return> to select it.

Fields enclosed in parenthesis ( ) are manipulated by one
of the following two methods:

4.2 Main Menu Screen

The ‘Main Menu’ screen (Screen 4- 2) lists the functional
user accessible menus. To activate any menu, highlight the
desired selection and press <return>. This menu and any
subsequent menu may be exited by pressing <esc>. If the
‘Main Menu’ is exited, the terminal interface program ter­minates. This is a valid way to end a user session. If any
other menu is exited, the previous screen is returned.

The menu structure (Figure 4-1) shows all the screens
accessible from the ‘Main Menu’.

NOTE: If no key is pressed for 10 minutes, the terminal
interface logs off automatically. To manually log off,
press <esc> from the ‘Main Menu’.

1) Pressing <return> on such fields as (Reset) and
(Start Test) simply execute the function.

2) The most common type of field in parenthesis accepts
typed input in the form of letters and /or numbers. Typing
characters when the field is highlighted causes the current
entry to be replaced with the new characters. To edit an
existing entry rather than replace it, press the <right arrow>
key to move the cursor to the point that needs editing. Char­acters may then be inserted or deleted. Typed data is always
inserted rather than typed over. If the field is full, though, at
least one character must be deleted to add another.

Many fields of this type may also be toggled by pressing the
<spacebar>. Other fields are range checked, where the user
is not allowed to exit with an illegal value set.

NOTE: Any screen may be redisplayed (or refreshed)
by pressing <Ctrl - U>. Any changes to fields on a
screen, that have not been activated by pressing
<return>, will be discarded.

Figure 4-1 Menu Structure

Alarms

Log

Standard 24-Hour

Enhanced 24-Hour

On

Standard 30-Day

Enhanced 30-Day

Line Parameters

Alarm Parameters

Port Parameters

MAIN

MENU

Performance

Maintenance

Configuration

Log

Off

SNMP Parameters

Utilities

4.3 Alarms Screen

The ‘Alarms’ screen (Screen 4- 3 on page 4- 4) is used to
view the current alarm status of the network and the DTE
lines. The fields are described as follows:

NET /DTE Alarms: These status lines display the selected
element’s current network/ DTE signal alarm state. Alarms
are determined by the following user selectable thresholds.

Table 4-1 Alarm Indications

Alarm Description

------- No status is available
OK No alarm threshold has been exceeded , although errors

may exist which do not exceed th resholds.

ERRS The Errored Seconds, Severely Errored Seconds, or

Bipolar Errored Seconds threshold is exceeded.

LOSS The Loss Of Signal Seconds threshold is exceeded.

OOFS The Out Of Frame Seconds threshold is exceeded.

RAIS The Remote Alarm Seconds threshold is exceeded.

AISS The Alarm Indication Seconds threshold is exceeded.

UAS The Unavailable Seconds threshold is exceeded.

(alarm status): The main body of the ‘Alarms’ screen
shows the current count for parameters that may be used to
trigger an alarm.

The ‘Current’ column shows the total of the preceding 15
one -minute intervals. At the end of each one -minute inter­val, the o ldes t mi nute of the 15-minute interval is discarded.

The ‘Threshold’ column shows the values set in the
‘Alarm Configuration’ screen (Screen 4-7 on page 4- 10).
Any parameter that has a current value equal to or greater
than its non-zero threshold will generate an alarm. Any
parameter with a threshold value of ‘0’ is disabled from
generating alarms.

Terminal Operation 4-3PRISM 3000

NOTE: The parameters shown on the Alarms Screen
are updated at five second in tervals.

Power Loss Seconds: This field displays the number of
seconds that the element has been without power since this
value was last cleared.

Reset Alarm Registers: Pressing <return> on (RESET)
zeros the value of all ‘Current’ alarm parameters, but
does not affect 24-hour or 30-day performance registers.

Element: Pressing the <spacebar> toggles this field for
selection of either the ‘NEAR’ or ‘FAR’ unit as the source of
performance data or the target of commands. ‘NEAR’ refers
to the unit to which t he terminal is connected. ‘FAR’ refers
to the unit at the other end of the network T1 span.

Target: This two- part field determ ines whi ch sect ion of the
circuit is presently displayed by toggling the <spacebar>.
Telco registers are for viewing only and may not be
changed. The four options are:

4.4 Performance Screens

The ‘Performance’ screens display a detailed history of the
error parameters that are continuously monitored. The ter­minal interface provides display of near end or far end per­formance data using the facility data link.

The unit is equipped with a dual set of performance data
registers that hold line stati stics for both the telco and user.
Each register set provides detailed status and performance
history for the network and DTE interfaces.

The system has four ‘Performance’ screens. The ‘STAN-
DARD 24 HOUR’ and the ‘ENHANCED 24 HOUR’ screens
allow the user to view the 24-hour detailed performance his­tory of the T1 circuit. The only difference in the two screens
is in the type of performance data displayed. The ‘STAN-
DARD 24 HOUR’ screen is shown in Screen 4-4.

The ‘STANDARD 30 DAY’ and the ‘ENHANCED 30 DAY’
screens allow the user to view a 30-day history of a particu­lar element’s performance. These screens reference intervals
by date rather than by time. To reach each of the four screen
types, use the <spacebar> to toggle the ‘STANDARD 24
HOUR’ field. The other fields are described as follows:

[USER] [NET] – Display the user performance registers
for the network.

[USER] [DTE] – Display the user performance registers
for the T1 DTE.

[TELCO] [NET] – Display the telco performance registers
for the network.

[TELCO] [DTE] – Display the telco performance registers
for the T1 DTE.

Error Events: This field displays the running total of ESF
error events for the circuit selected in ‘Element’ and is
applicable only when ‘Target’ is set to [USER]. This
count accumulates until it reaches 65535 or is reset by
pressing <return> with the (RESET) field highlighted.

Reset Performance Registers: This field allows the ele­ment registers to be reset and may only be used when the
‘Target’ field is set to [USER]. If <return> is pressed, the
following warning appears:

DELETE ALL PERFORMANCE DATA?

(NO!) (YES)

To exit this screen without performing the reset function,
press <return> with ‘NO’ selected. To proceed with the reset

Screen 4-3 Alarms

3000

DSU x.xx/x.xx PRISM

No Far End Response Houston: (130) Time: HH:MM:SS

------------------------------------ ALARMS ------------------------------------

NET Alarms: OK
DTE Alarms: OK

Loss of Signal Seconds (LOSS) 0 5
Errored Seconds (ES) 2 45
Severely Errored Seconds (SES) 2 5
Unavailable Seconds (UAS) 0 0
Out of Frame Seconds (OOFS) 0 5
Remote Alarm Seconds (RAS) 0 0
AIS Seconds (AISS) 0 0
BPV Seconds (BPVS) 0 0
DTE LOS/OOF Seconds (LOSS) 0 0
Power Loss Seconds (PLS) 0

Reset Alarm Registers: (RESET)

Element: [NEAR]

3000

Date: MM/DD/YY

Current Threshold

PRISM 30004-4 Terminal Operation

function, press <return> on ‘YES’. All values for the cho­sen register set (NET or DTE) are then reset to zero.

[Standard 24 Hour]: Toggling this field with the <space­bar> steps through the four available performance screens.

The remainder of the fields in the ‘Performance’ screen are
for display only. They are defined as follows:

Status: This field displays the selected T1 line status
derived from the type (or absence) of errors in the received
data. This status represents the immediate state of the
received T1 signal and is not related to the alarm thresholds.
This field shows one or m ore of the si gnal condition s listed
in Table 4-2 on page 4- 7.

Completed Days: Displays the number of days which are
included in the 30-day totals.

Completed Intervals: This field displays the number of
15 -minute intervals in the last 24-hour period since the reg­isters were last cleared (a 24 -hour period may contain up to
96 intervals).

24 Hr.% Error Free: This field displays the percentage of
error free seconds within the last 24 hours or since the event
registers were last cleared. It is based only on the ES and
UAS parameters.

(performance data): The main body of display data con­sists of error events for three different periods: The first dis­play line shows the data accumulated for the current interval
(from 0 to 900 seconds). The second line shows the totals
for the last 24-hour period (or the last 96 fifteen-minute
intervals). The third line shows the 30-day totals.

The remaining lines of this screen show the data for any
intervals containing errors. Interval 1 is the most recently
stored 15 -minute interval and interval 96 is the oldest in the
current 24- hour period. On the 30 -day screens, interval 30
is the oldest 1-day interval in the current 30 -day period.
The real time (or date on 30-day screens) of the interval
beginning is shown in the first column.

If more than 5 errored intervals have elapsed, [PAGE- DN]
appears to the left of the performance data. Pressing
<return> on th is field displays the next five errored intervals.
[PAGE-UP] appears once [PAGE- DN] is used. Pressing
<return> on [PAGE -UP] displays the previous five errored
intervals. Only intervals that contained errors are displayed,
which eliminates rows of zeroes. If an interval is not dis­played, no errors were detected during that time period.

NOTE: The parameters shown on the ‘Performance’
screens are updated at 5 second intervals .

Per AT&T Technical Reference TR54016, the ‘Stan­dard 24 Hour’ and ‘Standard 30 Day’ performance

data consists of Errored Seconds (ES), Unavailable Seconds
(UAS), Bursty Errored Seconds (BES), Severely Errored
Seconds (SES), Loss of Frame Count (LOFC), and Con­trolled Slip Seconds (CSS ).

The ‘Enhanced 24 Hour’ and ‘Enhanced 30 Day’
screens show data for CRC Errored Seconds (CRCES), Out
of Frame Seconds (OOFS), Loss of Signal Seconds (LOSS),
Alarm Indication Signal Seconds (AISS), Remote Alarm
Seconds (RAS), and Bipolar Violation Seconds (BPVS).

NOTE: For generic 54016 far end devices, only the
standard telco 24- hour performance data is displayed.
30-day data is not available.

Screen 4-4 Performance

3000

DSU x.xx/x.xx PRISM

No Far End Response New York: (236) Time: HH:MM:SS

----------------------------- 24 HOUR PERFORMANCE ------------------------------

Element: [NEAR] Status: OK
Target: [USER ][NET] Completed Days: 12
Error Events: 302 (RESET) Completed Intervals: 6
(RESET PERFORMANCE REGS) 24 Hr.% Error Free: 91.7

[STANDARD 24 HOUR]

362 2 362 0 2 3 3
24 Hour 6 2700 0 2 3 0
30 Day 30 0 20 12 23 13
PAGE-UP ------------------------------------------------------------------
Time Interval ES UAS BES SES LOFC CSS
PAGE-DN ------------------------------------------------------------------
13:30 6 1 900 0 0 1 0
13:15 7 2 900 0 0 3 3

3000

Date: MM/DD/YY

Terminal Operation 4-5PRISM 3000

4.5 Maintenance Screen

4.5.2 BERT

The ‘Maintenance’ screen (Screen 4- 5 on page 4 -6) allows
the user to perform test and maintenance functions on the
T1 circuit. BERT is performed by using on-board test facili­ties. No other test equipment is needed. Actions initiated by
each field are detailed in the following paragraphs.

Clear Tests: Pressing <return> on this field clears all tests
and any line loops that have been initiated.

Clear Alarms: Pressing <return> on this field causes all
near end alarms to be cleared.

4.5.1 Test Loops

Loop status changes can be made only when the BERT
function is not in the active mode. The type of loop is cho­sen by toggling the <spacebar> and is executed by pressing
<return>.

T1 Loop: This field is used to select the test loops which
will be initiated. The normal operatin g mode and available
loopback options are detailed in Figure 4-2 on page 4-8.

T1 Unloop: Pressing <return> on this field takes down the
specified loop.

Port Loop: This field is used to loop a high speed DTE
port at the near or far end (see Figure 4-2 on page 4 -8). Far
end loops use V.54 loop codes to activate. To enable the
V.54 function, refer to Section 4.6.3 on page 4-12.

BERT: Specifies the direction the BERT signal will be
sent. If the direction is changed from the front panel, the
new choice is not updated on the terminal interface until this
screen is exited and then reentered. The choices are:
‘IDLE’, ‘T1

NET’, ‘T1 DTE’, ‘Channels 1–24’, plus
‘ONE NET’, ‘ONE DTE’, ‘TWO NET’, ‘TWO DTE’, ‘THREE
NET’, ‘THREE DTE’, ‘FOUR NET’, and ‘FOUR DTE’.

NOTE: All testing must be stopped before channels
may be reallocated to an active port.

Pattern: Specifies the pattern to be transmitted during a
test. Modifying this field will not

cause the pattern to be

transmitted (refer to ‘Start Test’). The choices are [QRSS],

[63], [511], [2047], [2
[3:24], [ALT], and [CLEAR

15

], [220], [223],[1:8],

]. The ‘CLEAR’ pattern passes
the received data through the unit (alarm detection and
reporting is disabled while the test is active).

Te st Le n gt h: Defines the run -time of test pattern genera­tion and error accumulation. The choices are [Continu-
ous], [15 min], [30 min], [60 min], [24 Hour].

Start Test: Pressing <return> with the cursor on this field
starts the selected test pattern. ‘TEST IN PROGRESS’
appears once the test has started. To end the test, press
<return> on ‘STOP TEST’.

Reset Errors: Pressing <return> with the cursor on this
field causes the test error results to be cleared to zero.

Port Unloop: Pressing <return> takes down the specified
loop from the currently selected port.

Screen 4-5 Maintenance

3000

DSU x.xx/x.xx PRISM

No Far End Response London: (148) Time: HH:MM:SS

----------------------------- ELEMENT MAINTENANCE ------------------------------

BERT: [T1 NET]
(CLEAR TESTS) Pattern: [QRSS]
(CLEAR ALARMS) Test Length: [15 min]

T1 Loop: [FAR PLB] Pattern Sync: IN SYNC
T1 Unloop: [FAR PLB] Elapsed Time: 01:15:00
Bit Errors: 5
Port Loop: [2A NEAR ] Errored Seconds: 3
Port Unloop: [2A NEAR ] % EFS: 97.5

(START TEST)
NET Status: OK (RESET ERRORS)
DTE Status: OK
Near Loops: -------/-------/-------/------­Far Loops: -------/-------

The following fields are for display only. They reflect the
selected test parameters and the results of these tests only:

3000

Date: MM/DD/YY

PRISM 30004-6 Terminal Operation

Pattern Sync: This field displays the current state of pat­tern sync during a test. If no test is in progress, ‘NO TEST’
is displayed. If a test is active, but the receiver is not in pat­tern sync, ‘NO SYNC’ is displayed. If the receiver is in pat-
tern sync, ‘IN SYNC’ is displayed.

Elapsed Time: Displays the amount of time elapsed since a
timed test began or, if completed, the total test time.

Bit Error s: Displays the total number of bit errors detected
since the test began or since error statistics were cleared (up
to a maximum number of 999,999).

Errored Seconds: This field displays the number of a syn­chronous errored seconds that have been detected since the
test began or since error statistics were last cleared. This
parameter includes bit error seconds and sync loss seconds.

% EFS: This ratio is derived from the number of error free
seconds divided by the number of seconds accumulated in
‘Elapsed Time’.

4.5.3 Line Fault and Loop Status

NET /DTE Status: These two fields disp lay the fault s tatus
of the network and DTE. They are indicators of current fault
conditions and do not indicate that alarm thresholds are
exceeded. Status indications are described in Table 4 - 2.

Near Loops: Displays the loop status of the ‘near’ element.
Far L oops: Displays the loop status of the ‘far’ element.

Table 4-2 Status Indications

Status Description

------- No status is available
OK No errors are currently detected.

ERR Frame bit errors, CRC errors, or BPVs are detected.
LOS A loss of signal condition exists.

OOF An out of frame condition ex ists.

RAI The far end is receiving a remote alarm indication signal.
AIS The far end is receiving an alarm indica tion signal.

UAS An unavailable signal state exists due to consecutive

severely errored seconds.

4.6 Configuration Screens

The various ‘Configuration’ screens allow the user to view
and set configuration parameters fo r the network elements.
Only the installed options are available as menu items.

NOTES: To send a new configuration to the unit, the
user must press <return> on one of the fields or exit the
screen. The underlined values are the factory default
parameters stored in ROM.

4.6.1 Line Parameters

The ‘Line Parameters’ screen (Screen 4- 6) allows the user
to review and set line parameters for the selected element on
the T1 circuit. The T1 DTE fields appear only in units with
the T1 DTE option installed.

Screen 4-6 Line Parameters

3000

DSU x.xx/x.xx PRISM

3030 DSU x.xx/x.xx Ontario: (91) Time: HH:MM:SS

------------------------------- LINE PARAMETERS --------------------------------

Element: [NEAR]

T1-NET Framing: [ESF ] Rem Comm Channel: ( 0)
T1-NET Line Code: [B8ZS] T1-DTE Framing: [ESF ]
T1-NET LBO: [0 dB ] T1-DTE Line Code: [B8ZS]
PRM Enable: [DISABLED] T1-DTE DSX Level: [0-110 FEET ]
Zero Suppression: [ENABLED ] D/I Start Ch: ( 1)
T1-NET Timing: [STATION ] # of Channels: (24)
Station Timing: [64K x ] ( 1)

Channel Allocation:

------ ------

3000

Date: MM/DD/YY

1x1x1x 1x1x1x

Terminal Operation 4-7PRISM 3000

Figure 4-2 Loopback Diagr ams

4
5

1
2

From Network

4
5

1
2

From Network

4
5

1
2

From Network

To Net wor k

RJ48C

1

To Network

RJ48C

2

To Network

RJ48C

3

Network Interface

Framer/Deframer Multiplexor Receivers/Drivers

From

NET

To

NET

From

NET

To

NET

Framer/Deframer

Receivers/ D rivers

DTE (DSX1)

BERT Generator/

Detector

From
Ports

To

Ports

Normal Operation

Network Interface Framer/Deframer Multiplexor Receivers/Drivers

From

NET

To

NET

From

NET

To

NET

Framer/Deframer

Receivers/Drivers

DTE (DSX1)

NET
LLB

BERT Generator/

Detector

From
Ports

To

Ports

Network LLB

Network Interface Framer/Deframer Multiplexor Receivers/Drivers

From

NET

To

NET

From

NET

To

NET

Framer/Deframer

Receivers/Drivers

DTE (DSX1)

NET
PLB

All ones

to DTE

BERT Generator/

Detector

From
Ports

To

Ports

Network PLB

(100' max.)

DTE (EIA530 or V.35)

RJ48C

DSX1, 1'-655'

to cross-connect

(100' max.)

EIA 530 or V.35

RJ48C

DSX1, 1'-655'

to cross-connect

(100' max.)

EIA 530 or V.35

RJ48C

DSX1, 1'-655'

to cross-connect

1
2

4
5

1
2

4
5

1
2

4
5

Network Interface Framer/Deframer Multiplexor Receivers/Drivers

4
5

1
2

From Network

To Network

RJ48C

4

1)

Normal Operation:

mal operating mode.

From
Ports

To

Ports

BERT Generator/

Detector

Network MLB

This diagram depicts the unit’s nor-

(100' max.)

EIA530 or V.35

RJ48C

DSX1, 1'-655'

to cross-connect

2)

From

NET

To

NET

Framer/Deframer

From

NET

To

NET

NET LLB:

Receivers/Drivers

NET

MLB

DTE (DSX1)

The network ‘line loopback’ command
loops data received from the network back toward the net­work. Received data is passed through to the DTE ports.

PRISM 30004-8 Terminal Operation

1
2

4
5

4
5

1
2

From Network

To Network

RJ48C

5

Network Interface Framer/Deframer Multiplexor Receivers/Drivers

From

NET

To

NET

From

NET

To

NET

Framer/Deframer

Receivers/Drivers

DTE (DSX1)

DTE

MLB

BERT Generator/

Detector

From
Ports

To

Ports

DTE MLB

(100' max.)

EIA530 or V.35

RJ48C

DSX1, 1'-655'

to cross-connect

1
2

4
5

4
5

1
2

From Network

4
5

1
2

From Network

To Network

RJ48C

6

To Network

RJ48C

7

Network Interface Framer/Deframer Multiplexor Receivers/Drivers

From

NET

To

NET

From

NET

To

NET

Framer/Deframer

T1 DTE

LLB

Receivers/Drivers

DTE (DSX1)

BERT Generator/

Detector

From
Ports

To

Ports

DTE LLB

Network Interface Framer/Deframer Multiplexor Receivers/Drivers

To

NET

From

NET

To

NET

From

NET

DTE

Near/Far

Framer/Deframer

Receivers/Drivers

DTE (DSX1)

BERT Generator/

Detector

From
Ports

To

Ports

Port Loop

(bidirectional)

(100' max.)

EIA530 or V.35

RJ48C

DSX1, 1'-655'

to cross-connect

(100' max.)

EIA530 or V.35

RJ48C

DSX1, 1'-655'

to cross-connect

1
2

4
5

1
2

4
5

3)

NET PLB:

The network ‘payload loopback’ command
loops the network data back toward the network. Framing,
CRC, and FDL are regenerated. Framed all ones are passed
to the DTE ports.

4)

NET MLB:

The network ‘maintenance loopback’ com­mand loops data at the T1 DTE p ort back toward the net­work (passes network data to the DTE and return data to the
network). MLB affects only network channels assigned to
the T1 DTE.

5)

DTE MLB:

The T1 DTE ‘maintenance loopback’
command loops all network data back toward the DTE ports
at the network interface. Data is passed through to the net­work. It is advisable to set ‘

’ rather than ‘

NAL

NETWORK

T1-NET Timing

’ when this loop is enabled.

’ to ‘

INTER-

6)

DTE LLB:

The T1 DTE ‘line loopback’ command
loops data received at the T1 DTE interface back toward the
T1 DTE (all DS0s are returned to the T1 DTE port). The T1
DTE data is also passed to the network.

FAR PLB:

The far ‘payload loopback’ command sends
loop codes to the far end unit to force it into a ne twork pay­load loopback mode.

FAR LLB:

The far ‘line loopback’ command sends loop
codes to the far end unit to force it into a network line loop­back mode.

7)

Port Loop

: This field is used to loop a high speed
DTE port at the near or far end. High speed port loops are
bidirectional.

Terminal Operation 4-9PRISM 3000

This screen has the following fields, most of which have
user selectable options. To send the new line configuration
to the unit, either press <return> on one of the fields, change
the ‘Element’ selection, or exit the screen.

T1 -NET Framing: Selects the type of framing for the net­work side of the element. The choices are [ESF

] and [D4].

T1-NET Line Code: Sets the network side line coding.
The choices are [AMI] and [B8ZS

].

T1-NET LBO: Sets the line build out for the network
interface. The choices are [0

dB], [-7.5 dB], [-15 dB],

and [-22.5 dB].
PRM Enable: This field allows the T1.403 Performance

Report Message, which is sent once a second, to be turned
on or off. The choices are [ENABLE] and [DISABLE

].

Zero Suppression: This field determines whether ones
density insertion is activated after 15 zeros (rather than 175
zeros). The choices are [ENABLE

] and [DISABLE].

T1-NET Timing: Sets the timing source to synchronize
the PRISM’s internal timing generators. In all cases, slips
are controlled to occur on frame boundaries at the network
and/or DSX1 ports when timing synchronization is lost.

NETWORK

: Timing is derived from the network recov-

ered clock (most applications use this selection).
STA TION: Timing is derived from a bipolar or TTL com-

patible clock supplied to the unit via the rear pane l ‘STA
CLK’ connector. When this mode is selected, the timing
rate must also be set from ‘Station Timing’.

INTERNAL: The unit’s internal frequency standard is
used for all timing.

T1 DTE: The unit synchronizes to the clock recovered
from the DSX1 T1 DTE port. This selection only appears
on units equipped with the T1 DTE option.

PORT 1, 2, 3, or 4: Timing is synchronized to the exter­nal terminal timing clock supplied from the DTE and con­nected to the selected port.

Station Timing: Selects the input timing and only appears
when ‘Station’ is selected from the ‘T1 - NET Timing’
menu. The choices are ‘Nx56K’, ‘Nx64K’, and ‘1.544
MHz’. A number appears to the right of this field when
‘Nx56K’ or ‘Nx64K’ is selected to indicate the rate multi-
plier. A value from ‘1’ through ‘24’ must be entered.

Remote Comm Channel: This field selects a communica­tion link to the far end un it. If ‘0

’ is selected, communica­tion is established over the ESF facility data link (valid only
when the network interface is configured for ESF and the
FDL has end - to- end integrity). For example, the entire T1
bandwidth must be available to the user with no intervening
multiplexors in the signal path blocking the FDL.

As an alternative, the communication link may be assigned
to an unused idle ch annel. This option may be used whether
the network is operating in D4 or ESF modes.

When the remote communication is programmed to operate
over a spare network channel, the following test conditions
will interrupt access to the far end unit:

• A remote network LLB or PLB is initiated.

• A local network LLB is initiated.
When the remote communication is programmed to operate

over the facility data link (FDL), the following test condi­tions will interrupt access to the far end unit:

• A remote network LLB is initiated.

• A local LLB is activated on the near end.

NOTE: If far end communication is interrupted for any
reason while accessing the remote unit, the user should

Screen 4-7 Alarm Parameters

3000

DSU x.xx/x.xx PRISM

No Far End Response Topeka: (205) Time: HH:MM:SS

----------------------------- ALARM CONFIGURATION ------------------------------

Element: [NEAR]

Errored Seconds (ES): ( 45) Remote Alarm Seconds (RAS): ( 0)
Severely Errored Seconds (SES): ( 5) AIS Seconds (AISS): ( 0)
Loss of Signal Seconds (LOSS): ( 5) Out of Frame Seconds (OOFS): ( 5)
Unavailable Seconds (UAS): ( 0) BPV Seconds (BPVS): ( 0)

DTE LOS/LOF Seconds (LOSS): ( 0) Alarm Reset Timer (seconds): ( 30)

3000

Date: MM/DD/YY

PRISM 30004-10 Terminal Operation

exit and then reenter this screen to ensure that all the
parameters have been updated.

T1-DTE Framing: Selects the type of framing for the
DTE side of the element. The choices are [ESF] and [D4

].

T1-DTE Line Code: Sets the DTE side line coding. The
choices are [AMI

] and [B8ZS].

T1 - DTE DSX Level: Specifies the DTE line build out sig­nal level. The choices are: ‘0-110

ft’
‘111-220ft’‘221-330ft’‘331-440ft’
‘441-550ft’‘551-660ft’‘>660 ft’

D /I Start Channel: Selects the first channel in the block of
channels assigned to the T1 DTE, from ‘1’ through ‘24’.

# of Channels: Sets the number of channels to be passed
through to the T1 DTE, from ‘1’ through ‘24’.

Channel Allocation: This display indicates the network
channel assignments with Channel 1 on the left and Channel
24 on the right.

Channels assigned to a port are identified with a port num­ber (1, 2, 3, or 4). Channels assigned to the T1 DTE are
marked as ‘D’. Non-assigned idle channels are marked with
a dash ‘-’. Remote communication channels are marked
with an ‘R’. When channels are assigned to a port in the
‘ALTERNATE’ assignment mode (see Section 4.6.3), each
data channel is followed by an idle channel that is not
assignable for other ports and is marked with an ‘x’.

4.6.2 Alarm Parameters

The ‘Alarm Parameters’ screen (Screen 4 -7) allows the user
to review and set alarm related thresholds for the selected
element. These thresholds are the minimum acceptable per­formance levels. To modify the parameters, highlight the

desired statistic, type in the new value (any number from 0
to 900) and press <return>. If this value is later surpassed,
an alarm indication will appear. A field set to (0) will cause
the element not to alarm on that statistic.

NOTE: If alarm thresholds are edited from the front
panel, the corresponding values are not reflected on
this screen until it is exited and then reentered.

Errored Seconds: A one second period in which at least
one logic error occurred.

Severely Errored Seconds: A one second period in which
at least 320 CRC errors or 1 OOF (out-of-frame) occurred.

Loss of Signal Seconds: A one second period in which the
T1 received signal is interrupted.

Unavailable Seconds: A one second period in which con­secutive se verely errored seconds cause an una vailable state.

DTE LOS /LOF Seconds: A one second period in which
the T1 received signal (on the optional T1 DTE interface) is
interrupted or the amplitude drops below a certain level.

Remote Alarm Seconds: Generated by the terminal equip­ment when an improper signal is received from the facility
(or upon receipt of unframed all ones).

AIS Seconds: A one second period in which all ones are
received.

Out of Frame Seconds: A one second period in which a
frame sync loss occurred.

BPV Seconds: A one second period in which at least one
bipolar violation occurred.

Alarm Reset Timer: Determines the number of seconds
after alarm conditions clear before indications are removed.

Screen 4-8 Port Parameters

3000

DSU x.xx/x.xx PRISM

No Far End Response Los Angeles: (248) Time: HH:MM:SS

------------------------------ PORT CONFIGURATION -----------------------------­Element: [NEAR]

Channel Allocation:
Port # [

Rate Mult: [N x 64k]
DS0 Ch. Assign: [Alternate ] V.54 Loop : [Enable ]
Invert Data: [No ]
Start Ch. #: ( 1) CTS Control: [Force True ]
Port Rate: [384 kHz ] DSR Control: [Force True ]
# of Channels: 6 DCD Control: [Force True ]

Tx Clock: [Internal ] Alarm on DTR Loss: [Disable]

One

]

3000

Date: MM/DD/YY

1x1x1x 1x1x1x ------ ------

Terminal Operation 4-11PRISM 3000

4.6.3 Port Parameters

The ‘Port Configuration’ screen (Screen 4- 8) sets the oper-
ating parameters for each high speed port and the RS232
port, if equipped. The unit does not allow conflicting config­urations for the DTE ports. Therefore, the selections for
each menu item are restricted to those that do not conflict
with the configuration of other high speed ports or the T1

DTE Port. The default is all channels disabled

.

When channel assignment changes are made to the high or
low speed ports, to the remote commun ication link, o r to the
T1 DTE, the PRISM unit reestablishes the mapping of all
channels. This interruption to traffic will normally result in a
brief burst of data errors on other ports.

Channel Allocation: This field is described in detail on the

previous page.

Port #: Selects the port to be configured, from [One] to
[Four] (Note: The RS232 port can use only ports 1 and 3).

Rate Multiplier: The unit can operate at any data rate that
is a multiple of 56 or 64 kb/s. When ‘Nx 64K’ is selected,
the ones density requirements of the T1 network line must
be ensured. When ‘Nx 56K

’ is selected, the unit maintains

ones density for the selected DS0 channel.
DS0 Channel Assignment: Selects whether the DTE chan-

nel assignment will b e made as a ‘CONTIGUOUS

’ group or
as ‘ALTERNATE’ channels. Selecting ‘ALTERNATE’ will
assure ones density. Note: the RS232 port can use only the
‘CONTIGUOUS’ mode.

the bit rate and the mode selected in ‘DS0 Channel
Assignment’. The choices are ‘1’ through ‘24’.

Port Rate (high speed port): Selects the required port bit
rate in increments of 56 or 64 k b/s, d epe nding on the ‘ Rate
Multiplier’ setting. The ‘N’ multiplier ranges in value
from ‘0’ to ‘24’.

Port R ate (RS232 port): The choices are: ‘None’, ‘Syn-
chronous’, ‘1200’, ‘2400’, ‘4800’, ‘9600’, ‘14400’,

‘19200’, ‘28800’, ‘38400’, ‘48000’, ‘56000’, and
‘64000’.

# of Channels (high speed ports only): Displays the num­ber of channels to be passed through to the T1 DTE. This
number is determined by the selection in ‘Port Rate’.

Tr a ns m i t C l o c k : This field is used to select the clock that
the unit will use to sample the data transmitted from the
DTE. When set to ‘INTERNAL

’, the data is sampled directly
with the transmit data clock that i s also su pplied to the DTE
as Transmit Clock. The ‘EXTERNAL’ option uses the exter-
nal clock supplied by the DTE. The external clock for the
RS232 port is only valid at 56 or 64 kb/s. T he ‘OVERSAM-
PLED’ option is used to operate the port as a low speed
asynchronous port. In this mode, the port rate should be set
to at least 3 times the asynchronous data rate (depending on
the degree of allowable distortion for the particular DTE
equipment used).

V.54 Loop: Selecting ‘Enable

’ allows the unit to respond
to inband V.54 loop commands. If ‘Disable’ is selected,
the unit ignores these commands.

Start Channel #: The starting channel in the 24-channel
DS1 bit stream must be selected in this field. The unit then
assigns the following channels automatically according to

Screen 4-9 TCP/IP Parameters

3000

DSU x.xx/x.xx PRISM

No Far End Response Birmingham: (151) Time: HH:MM:SS

----------------------------- TCP/IP Configuration ----------------------------­Ethernet 255.255/X.XX
Element: [NEAR] (RESET LAN INTERFACE)

PRISM I.P. Address (000.000.000.000)
Subnet Mask (000.000.000.000)
Router I.P. Address (000.000.000.000)

Filter I.P. Address (000.000.000.000)
Filter I.P. Address (000.000.000.000)
Filter I.P. Address (000.000.000.000)
Filter I.P. Address (000.000.000.000)
Filter I.P. Address (000.000.000.000)
Filter I.P. Address (000.000.000.000)
Filter I.P. Address (000.000.000.000)
Filter I.P. Address (000.000.000.000)

Invert Data: In the invert mode (YES), transmit and receive
data are inverted at the port interface. This function may be
used as a means of guaranteeing ones density when the data

3000

Date: MM/DD/YY

PRISM 30004-12 Terminal Operation

is composed of SDLC type protocols. The choices are ‘YES’
and ‘NO

’.

CTS / DSR/DCD Control: Setting any of these three fields
to ‘FORCE

TRUE’ or ‘FORCE FALSE’ allows the forcing of
the port control lead output state. ‘INTERNAL’ allows for
normal operation as shown in the High Speed Data Port

diagram on page 3-6. The control lead operation for the

RS232 port is shown in the EIA530 or RS232 Option dia-

gram on page 3-6.

Subnet Mask: This field is provided to manually override
the subnet mask setting which is otherwise discovered by
the SNMP agent.

Router IP Address: This field accepts the IP address of the
default router.

Filter IP Address: These eight fields accept the IP address
of the source packet filter. If any of these fields are set,
access is allowed only by the specified IP addresses.

Alarm on DTR Loss: Selecting [Enable] allows the
PRISM to go into alarm on loss of DTR. The default setti ng
is [Disable

].

4.6.4 TCP/IP Parameters

The ‘TCP/IP Configuration’ screen (Screen 4-9) is acces si­ble for the Ethernet or Token Ring SNMP interface. It
allows for the entry of those parameters required for proper
operation with an Ethernet or Token Ring- based LAN man­ager. The SNMP menu consists of alpha-numeric entry only
(no selectable parameters).

Ethernet / Token Ring: This field displays the applicable
hardware/software revision level.

Element: Toggling this field with the <spacebar> accesses
either the [NEAR] or [FAR] unit.

Reset LAN Interface: For changes to take effect, the unit
must be restarted. Selecting this field brings up a confirma­tion screen which asks if you want to proceed with the reset.

PRISM IP Address: This field accepts IP addresses. Each
device connected to the LAN is required to have a unique IP
address identifier .

4.6.5 SNMP Parameters

The ‘SNMP Configuration’ screen (Screen 4- 9) is accessi­ble if the unit is equipped with the Ethernet or Token Ring
SNMP interface. It allows for the entry of those parameters
required for proper operation with an Ethernet or Token
Ring-based LAN manager. The SNMP menu consists of
alpha-numeric entry only (no selectable parameters).

Element: Toggling this field with the <spacebar> accesses
either the [NEAR] or [FAR] unit.

Reset LAN Interface: For changes to take effect, the unit
must be restarted. Selecting this field brings up a confirma­tion screen which asks if you want to proceed with the reset.

SNMP Sets: This field enables or disables the set command
responses. Refer to Appendix ___ for detailed information
on these responses.

Trap IP Address: This field accepts the IP address of a
network device where alarm reporting traps are to be sent.
Each of the four numbers range from 0 to 255 and is sepa­rated by a period.

The PRISM detects and reports T1 network alarms and pro­vides several options for reporting them, one of which is

Screen 4-10 SNMP Parameters

3000

DSU x.xx/x.xx PRISM

No Far End Response Birmingham: (151) Time: HH:MM:SS

------------------------------ SNMP CONFIGURATION ------------------------------

Ethernet x.xx/x.xx Element: [NEAR] (RESET LAN INTERFACE)
SNMP Sets: [ENABLE ]
Trap I.P. Address 1 (000.000.000.000)

Trap I.P. Address 2 (000.000.000.000)
Trap I.P. Address 3 (000.000.000.000)
Trap I.P. Address 4 (000.000.000.000)
Trap I.P. Address 5 (000.000.000.000)
Trap I.P. Address 6 (000.000.000.000)

Read Community (public )
Write Community (private )
System Contact (no system contact )
System Name (no system name )
System Location (no system location )

3000

Date: MM/DD/YY

Terminal Operation 4-13PRISM 3000

Trap Def i n i ti ons

Cleared

Near

10 60 110 160 DTE LOSS
11 61 111 161 DTE CSS
12 62 112 162 DTE SES
13 63 113 163 DTE ES
14 64 114 164 NET CRCES
15 65 115 165 NET BPVS
16 66 116 166 NET AISS
17 67 117 167 NET RAS
18 68 118 168 NET UAS
19 69 119 169 NET OOFS
20 70 120 170 NET LOSS
21 71 121 171 NET CSS
22 72 122 172 NET SES
23 73 123 173 NET ES
24 74 124 174 Device Reset

Cleared

Far

4 54 104 154 DTE CRCES
5 55 105 155 DTE BPVS
656106156DTE AISS
7 57 107 157 DTE RAS
858108158DTE UAS
9 59 109 159 DTE OOFS

Alarmed

Near

Alarmed

Far

Description

SNMP traps. When a network alarm occurs, the unit sends a
trap message to up to 6 destinations on the user’s network.
The trap message is formatted per RFC 1157. The generic
trap type is ‘enterpriseSpecific’ (generic-trap = 6).

When an alarm group is defined to report via SNMP, up to 6
Trap IP addresses can be assigned. The PRISM will report
each alarm by transmitting an SNMP ‘Trap’ to each Trap IP
address. T1 network problems often cause more than one
alarm type. In these cases, multiple trap messages are gener­ated, each with a different specific trap type. The specific­trap field of each trap message is set to one of the values
shown in the ‘Trap Definition’ table on the previous page.

The following five menu items require the entry of up to 255
characters identifying the appropriate group, person, device
function, or unit location.

Read Community: This display accepts a character string
identifying the group authorized to perform read operations.
The default setting is ‘public

’.

Write Community: This display accepts a character string
identifying the group authorized to perform write opera­tions. The default setting is ‘private

’.

System Contact: This display accepts a character string
identifying the person responsible for a network device. The
default setting is ‘no

system contact’.

System Name: This display accepts a character string iden­tifying the functionality of the network device. The default
setting is ‘no

system name’.

System Location: This display accepts a character string
identifying the physical location of network device. The
default setting is ‘no

system location’.

Screen 4-11 V oice Parameters

3000

DSU x.xx/x.xx PRISM

No Far End Response Boston: (232) Time: HH:MM:SS

--------------------------- Voice Port Configuration ---------------------------

Element: (NEAR)
Slot: (3)
Card Type: 4 Wire E&M

Port DS0 Mode State Name/ID Sig. Tx Gn. Rx Gn.

------------------------------------------------------------------------------­A (13) [ACTIVE] BUSY (DS0 13 ) [FXS/L S] [ 0dB] [ -6dB]
B (14) [ACTIVE] BUSY (DS0 14 ) [FXS/G S] [ 0dB] [ -6dB]
C (15) [ACTIVE] BUSY ( ) [MEG/LS] [ 0dB] [ -6dB]
D (16) [ACTIVE] BUSY ( ) [MEG/GS] [ 0dB] [ -6dB]
E (17) [ACTIVE] BUSY ( ) [PLAR ] [ 0dB] [ -6dB]
F (18) [SPARE ] IDLE ( ) [FXS/LS] [ 0dB] [ -6dB]

Channel Allocation:

----- ------

Firmware Revision: x.xx

3000

Date: MM/DD/YY

1x1x1x 1x1x1x -

PRISM 30004-14 Terminal Operation

4.7 Utilities Screen

The ‘Utilities’ screen (Screen 4- 12) handles the functions
described in the following paragraphs.

4.7.1 General Functions

Set Time: The current time may be entered in this field
using the 24 - hour HH :MM : SS format. For example, 3:45
AM is entered as ‘0345’ and 3:45 PM is entered as ‘1545’.

Set Date: The current date may be entered in this field
using the MM :DD:YY format. For example, July 4, 1993 is
entered as ‘070493’.

operation sets all parameters to th e factory default settings
and zeros all performance registers. If the reset operation is
not a satisfactory option, then call TxPORT Customer Sup­port for a one time use ‘back door’ password (refer to Sec-

tion 1.7 on page 1-6 for telephone numbers).

Maintenance Reset: This field will clear all user selectable
parameters, performance registers, passwords, and alarms.
All alarm threshold parameters will be reset to default val­ues. The unit reloads start-up configuration settings from the
default parameters stored in ROM. Pressing <return> on this
field brings up a warning prompt asking whether or not to
perform the reset function.

NOTE: The time and date can be set at the far end, but
not displayed.

New Password: This field allows entry of a password of up
to 10 characters. An empty string (carriage return only) may
be entered to disable the password feature. After <return> is
pressed, the new password is activated and is no longer visi­ble. Therefore, type carefully when entering a new password
and verify before pressing <return>. When the terminal
interface is exited and later reactivated, this password must
be entered exactly to gain access. If the wrong password is
entered, the following message will appear:

Incorrect Password; Please Enter Again.

NOTE: Do not exit the terminal interface program until
the password procedure is fully understood. If a pass­word has been specified, it must be typed exactly to
reenter the program.

If the user programs a password and later forgets it, the
password may be cleared through the front panel mainte­nance reset (refer to Section 3.1.1 on page 3- 1). The reset

Screen 4-12 Utilities

4.7.2 COA Parameters

The following fields pertain only to call on alarm functions.
Alarm Notification: This field controls the remote alarm

reporting. The choices are:

[OFF

] - Disables alarm reporting.

[DIRECT] - Sends reports to a printer or terminal con­nected directly to the supervisory port.

[DIAL] - Sends reports through an attached ‘AT’ com­mand set compatible modem connected to the ‘SUPV’
serial port, which must dial o ut to a remote modem. The
message format is described in the ‘Element ID’ field.

[DIAL NMS] - Sends reports through a modem to an
EM8000 element manager workstation.

Primary Phone#, Secondary Phone#: These fields are
ASCII strings for the primary and secondary call on alarm
phone numbers used in the [DIAL] and [DIAL NMS] modes.
The strings must NOT include the ‘ATDT’ command prefix.

3000

DSU x.xx/x.xx PRISM

No Far End Response Miami: (97) Time: HH:MM:SS

---------------------------------- UTILITIES -----------------------------------

Element: [NEAR]

Set Time: (12:34:25)
Set Date: (04/30/93)

Alarm Notification: [DIAL ]
Primary Phone#: [phone] )
Secondary Phone#: [phone] )
Element ID: (DSU 1230 )

New Password: (JohnDoe )

(MAINTENANCE RESET)

3000

Date: MM/DD/YY

Terminal Operation 4-15PRISM 3000

The unit attempts 3 times to connect using the primary num­ber. If all 3 attempts fail, it will attempt 3 times to connect
using the secondary number (if it is not blank). If the sec­ondary number fails, the unit waits 5 minutes and then
attempts to communicate with the primary number again.
When a connection is detected, the unit outputs the notifica­tion message (as described in the ‘Element ID’ field) and
then disconnects.

Element ID: This field allows the entry of an ASCII string
(29 characters in length) which identifies the unit to the
device receiving the alarm notification messages.

Call on alarm messages are reported in the following format
in the [DIAL] or [DIRECT] modes only:

Element ID HH:MM:SS MM/DD/YY <CR> <LF>
NET Alarms: alarms <CR> <LF>
DTE Alarms: alarms <CR> <LF>

where (alarms) is a string consisting of some or all of the
identifiers ‘LOS’, ‘OOF’, ‘RAS’, ‘AIS’, ‘UAS’, ‘ERRS’, or
the word ‘NONE’. The following is an example:

Joesunit 17:24:55 08/04/93
NET Alarms: LOS AIS ERRS
DTE Alarms: LOS 2A 2B 3A 3B

The user programmable ‘Element ID’ string is transmit-
ted first to allow the COA function to send a messag e wi th a
specific meaning to some host (such as a log on message).

ERRS

NOTE: The identifier ‘

’ represents an alarm that

is caused by ES, SES, and/or BPV errors.

4.8 Telnet Option

Telnet expands the Ethernet or Token Ring capabilities of
the PRISM unit. With the telnet feature installed, any telnet
compatible station emulating an ANSI VT100 terminal can
communicate with the PRISM unit. Fractional loopback and
BERT can be initiated and monitored from any telnet com­patible device in the wide area network (WAN). Note that
only a single telnet session is sup ported at any one time.

The user must be familiar with telnet operation to begin
communication with the unit (refer to the telnet documenta­tion) The telnet interface provides security through pass­word layers identical to those described in this chapter for
the terminal interface. Once communication is established,
all telnet screens are identical to those described for the ter­minal interface.

PRISM 30004-16 Terminal Operation

Index

Modem Compatibility 4-1
Modem Connection 2-5, 2-6

A

Alarm Connection 1-3, 2-4
Alarm Cutoff 3-12
Alarm Notification 4-16
Alarm Parameters 3-4, 3-11, 4-3, 4-11

B

BERT 3-8, 3-9, 4-6, 4-8
Boot Mode 3-12

C

Cables 2-4, 4-1
Call On Alarm 2-6, 3-12, 4-16
Channel Assignment 3-4, 4-11
Connections

Alarm 2-4
Data Port 2-3
External Clock 2-4
Modem 2-5
Network 2-4
NMS 2-5
Power 2-7
Supervisory Port 2-5, 2-6
Terminal Interface 2-5

Cursor Controls 4-2

D

Data Port Connections 2-3
Diagnostics 1-3, 3-8
DTE Line Build Out 2-3, 3-4, 4-10
DTE Line Coding 3-4, 4-10
DTE Line Framing 3-4, 4-10
DTE Port Configuration 1-2, 3-5

E

Element ID 3-12, 4-16
Element Manager 2-5, 3-12, 4-1
Ethernet 2-6, 4-16
External Clock Connection 2-4

F

FCC Requirements 1-4
Front Panel Operation 3-1

L

Line Configuration 4-7

M

Main Menu 3-2, 4-3
Maintenance Reset 2-3, 3-1, 4-16

N

Network Configuration 3-3, 4-7
Network Connection 2-4
Network Disconnection 2-4
Network Line Build Out 3-3, 4-7
Network Line Coding 3-3, 4-7
Network Line Framing 3-3, 4-7
NMS Address 3-12, 4-2
NMS Bit Rate 3-12
NMS Connection 2-5
NMS Daisy - Chain 2-5

O

Ones Density 3-4, 4-7
Ordering Numbers 1-5

P

Password 3-2, 3-11, 4-1, 4-15
Performance Registers 3-10, 4-4
Performance Report Message 3-4, 4-7
Port Parameters 4-12
Power Connection 1-3, 2-7

R

Rate Multiplier 3-5, 4-12
Remote Link 3-12, 4-10
RS232 Interface 3-6

S

SNMP Configuration 3-7, 4-13
SNMP Connection 2-6
Specifications 1-2
Status Indications 4-7
Supervisory Port 2 -5, 2-6, 3-12
System Utilities 3-11, 4-15

T

T1 DTE Alarms 3-11
T1 DTE Port 2-3, 3-4
Telnet Option 4-16
Terminal Interface Connection 2-5
Terminal Interface 4-1
Test Loops 4-6
Timing Source 2-4, 3-3, 4-10
TR54016 4-6
Transmit Clock 3-5, 4-12
Trap IP Address 3-8, 4-14
TxPORT Customer Service 1-6