Verilink NCC 2020 User Manual

September 1999 P/N 880-503284-001-A1

Copyright Notice

Trademarks

FCC Requirements

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

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

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

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

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

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

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

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

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

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

For T1 interfaces:

Port ID REN/SO C FIC USOC

1.544 Mbit/s SF

1.544 Mbit/s SF, B8ZS

1.544 Mbit/s ANSI ESF

1.544 Mbit/s ANSI ESF, B8ZS

For DDS interfaces:

Port ID REN/SO C FIC USOC

56 kbit/s 64 kbit/s

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

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

ii

Verilink NCC 2020 User Manual

6.0N 04DU9 -BN

6.0N 04DU5 -56

04DU9 -DN 04DU9 -1KN 04DU9 -1SN

04DU5 - 64

RJ-48C jack

RJ-48S jack

Lithium Battery

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

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

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

English

Français

DANGER!

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

DANGER!

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

CAUTION!

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

ATTENTION!

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

ATTENTION!

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

PRUDENT!

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

Españole

ATTENCION!

La bateria puede explota r si se reem plaza incorr ec tamente. Reemplace la b a t er ia con el mismo tipo de bateria ó una equivalente recomendada por el manufacturero. Disponga de las baterias de acuerdo con las instrucciones del manufacturero.

ATTENCION!

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

PELIGRO!

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

Verilink NCC 2020 User Manual

iii

Deutsch

VORSICHT!

Explosionsgefahr bei unsachgemäßem Ersetzen der Batterie! Batterie gleichen Typs und gleich er Qualität benutzen, wie vom Her s t eller empf ohlen. Ents orgung der Batterie nach Anweisung des Herstellers!

VORSICHT, GEFAHR!

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

VORSICHT!

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

Canadian

Requirements

Safety Precautions

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

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

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

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

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

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

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

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

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

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

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

• Follow all warnings and instructions marked on the product and in the manual.

• Unplug the hardware from the wall outlet before cleaning. Do not use liquid

cleaners or aerosol cleaners. Use a cloth slightly dampened with water.

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

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

iv

Verilink NCC 2020 User Manual

Product Warranty

Customer Service

Publications Staff

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

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

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

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

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

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

• If liquid has been spilled into the product.

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

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

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

Verilink offers the following services:

• System Engineers at regional sales office s for network design and planning assistance (800) 837- 4546

• Technical Assistance Center for free 24x7 telephone support during installation, maintenance, and troubleshooting (800) 285-2755 and support@verilink.com

• To return a product, it must be assigned a Return Materials Authorization (RMA) number before sending it to Veril i nk for repa ir (800) 92 6- 0085 , ext. 228 2

• Maintenance contracts and leasing plans (800) 837-4546

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

and training@verilink.com

• Web site (www.verilink.com)

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

Verilink NCC 2020 User Manual

v

vi

Verilink NCC 2020 User Manual

Overview

This user manual describe s the N CC 20 20 No de Cont roll er modul e, a component of Verilink’s Access System 2000 (AS2000) platform. The NCC 2020 is a network management mod ul e which also functions as a T1 CSU.

This manual assumes you are already familiar with the standard AS2000 products. Where appropriate, the text re fers you to a specific Access System 2000 manual for greater detail.

For information on installing and replacing shelves, modules, and power supplies, see the manual

NOTE:

Do not attempt t o mix NCM, NCC, and SCC node c ontroller s in the same node. There can be only one type of node controller in a node.

AS2000, The Basics

.

Management Options

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

The

•

The NCC 2020 Node Controller and Channel service unit module allows users to configur e directly through an ASCII terminal port (Craft interface) or by using either of two Verilink node management programs. Th is provides full control f or configura tion management, performan ce monitoring, and maintenanc e.

The NCC Node Controllers support the following:

•

NCC 2130 User Manual

version of the TAC 2130 Integrated T1 DSU/CSU (IDCSU).

AS2000, The Basics

Verilink products.

Node Manager for Windows 95 User Manual

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

Access Manager 2000 User Manual

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

ASCII Craft interface, local access by direct connection to the Craft port.

provides general information about

documents the network controller

, documents the

, documents the Verilink

Verilink NCC 2020 User Manual

1

-1

Overview

Verilink proprietary management program Access Manager

•

2000, which operates only under Windows™ 3.1. Verilink proprietary management program Node Manager,

•

which runs under Windows 95™ or NT.

Types of NCC Node Controllers

Verilink’s NCC family of node controllers includes the following modules:

The NCC 2020 is a TAC 2010 T1 CSU with the ad dition of a

•

node controller fu nction (documente d in this manual). The NCC 2130 is a TAC 2130 IDCSU (Integrated T1 CSU/DSU)

•

with the addition of a node controller function. See the

2130 User Manual

Compatible Modules

Table 1-1 NCC Compatible Modules

Module Type Usage

TAC 2010 CSU T1 CSU which may be used as a CSU only (CSU mode), part of a CSU/DSU

DIU 2130 DSU DSU with two synchronous serial interface ports for connection of Data

DIU 2130/DBU DSU DSU with a single synchronous serial interface port and modified firmware

Types of application modul es w hic h ma y be man a ge d by th e NCC 2020 are:

(Mux mode) or in a combination of both (Drop & Insert Mode). May be used with up to 24 DIU 21xx DSU modules to make a data channel bank.

Terminal Equipment (DTE). May be used with TAC 2010 (including the TAC 2010 portion of an NCC 2020). Uses a shelf midplane to receive/transmit data to a CSU module.

which uses the second port to switch the DTE data from port 1 to an external Dial Back-Up device—which must be configured to dial on DTR. Uses a shelf midplane to receive/transmit data to a CSU module.

for full details.

NCC

DIU 2130 56K/NMS

DIU 2140 Sub-Rate

TAC 2130 Integrated

1

-2 Verilink NCC 2020 User Manual

DSU DSU with two synchronous se r ial interface ports and support for routing

Data Multiplexer, 5 port DSU

DSU/CSU

of individual timeslots, in the “telco cloud”, to remote sites with 56K DDS circuits. Uses a shelf midplane to receive/transmit data to a CSU module.

DSU with five RS-232 interface p orts, each indiv idually selectable for sync or async data, wh ich are multiplexed into a single t imeslot (DS0) of the associated T1 CSU. Uses a shel f midplane to receive/transm it data to a CSU module.

Standalone (for data purposes) DSU/CSU, supports a sin g le synchronous serial interface only. Does not not use any midplane bus to transfer data to any other module.

Components

Overview

The complete NCC 2020 assembly con sists o f a front-pa nel module and a rear panel connector interface module, together occupying a single shelf-slot position accessible from the front and back of the AS2000 rack or shelf. The CIM is installed from the rear of the shelf into the backplane. The NCC 2020 front module is installed from the front. The CIM is always installed first and removed last. The NCC front module is installed last and removed first; it is equipped with ejector handles.

The NCC module front panel provides indicator LEDs and management ports. It also provides a Craft interface port and signal access jacks.

NOTE:

The bantam type signal access jacks provide access to internal signals within the module. If the NC C 2020 is being used with any type of DIU (DSU) module, the signals on the bantam jacks will NOT reflect line signals and this jack field should not be use d .

NCC 2020 Front Panel

The NCC 2020 front panel provides thumbwheel switches, LED indicators and management and monitor ports. It is equipped with dual ejector levers to facilitate installation and removal of the module.

Figure 1-1 NCC Node Controller Front Panel

Thumbwheel switches and command execution push button

NCC 2020

9 9

FUNCTION

Equipment, Status, and Network LEDs

EQPT

EXE

RJ-11 Modular jack for direct Craft interface connection

STAT

NET

CRAFT

EQPT

IN OUT

Signal access jacks (bantam

NET

IN OUT

MON

IN OUT

Note: The NCC Node Controllers all use the same front panel; only the model numbers are different.

The NCC 2020 Node Controller front panel has:

Three LEDs (status indication)

•

Three pairs of bantam jacks (see note above)

•

Craft interface 6-pin modular jack (terminal connection)

•

Two thumbwheel switches (command selection)

•

Momentary push-but to n switch (command executio n)

•

Verilink NCC 2020 User Manual

1

-3

Overview

Thumbwheel Switches

The thumbwheel switches on the front of the NCC 20 20 module are provided as a measure of last resort for configuring the NCC, and/or application modules it controls, when terminal access to the Craft interface is not possible.

It is preferred practice to use the Craft interface, Access Manager 2000 or Node Manager instead of the thumbwheels.

For a detailed procedure see “Thumbwheel Procedure” in Chapter 3.

CIMs for NCC 2020

The NCC 2020 front modul e must be installed wi th a rear connecto r module which provides ports for various interface requirements. The following table lists the connector modules that can be paired with the NCC 2020 Node Contro ller front module.

Table 1-2 NCC Node Controller Series Connector Interface Modules Summary

Front Module

NCC 2020 (C SU and node controller)

Connector

Interface Module

CIM 2020 RJ-48C RJ-48C DB-9 DB-9 CIM 2025 DB-15 DB-15 DB-9 DB-9

DSX-1 Port Connector

Net Port

Connector

Management

Port — In

Management

Port — Out

The following illustrations show the connector interface modules used with the NCC 2020.

Figure 1-2 CIM 2020 Back Panel (RJ-48C)

311-10XXXX-001

REV *

EQPT MANAGEMENT EXTENSION NO COM NC EXT TIMING MANAGEMENT POR T IN NETWORK

DB-9 male

Management

Port Out

DB-9 male Management Port Out

ALARM RELAY

Alarm Relay Connector

Figure 1-3

311-10XXXX-001

REV *

RJ-48C Equipment

CIM 2025 Back Panel (DB-15)

EQPT MANAGEMENT EXTENSION NO COM NC EXT TIMING MANAGEMENT PORT IN NETWORK

DB-15 female Equipment

ALARM RELAY

Alarm Relay Connector

DIN 8 pin External Timing

DB-9 male Management Port In

RJ-48C T1 Network

DB-15 male T1 Network

2025

2020

CIM

1

-4 Verilink NCC 2020 User Manual

Overview

Port Usage

Table 1-3 lists the connectors on both front and rear modules with

details about their uses:

Table 1-3 NCC 2020 Connector Ports

Port Located Usage

Craft Front Connect ASCI I terminal for configur ation, diagnostics, alar m monitoring,

Bantam Jacks Front Monitor network signals, DSX-1 equipment signals, connect T1 test

Network Rear Connect the T1 line to this port. Eqpt Rear Connect customer equipment which presents a DSX-1 T1 framed signal —

Management Port In

Management Extension

Ext Timing Rear Connect an optional external clock source, using either a TTL (Transistor

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

Rear Connect a cable directly or a modem for dialup connection to a PC running

Rear Connect a cable to an additional node at the same location. This feature is

and/or performance monitoring.

equipment.

is in CSU mode

often a PBX. This port is only used if the module is in CSU mode or Drop and Insert mode.

either of the Verilink management programs — AM2000 or Node Manager.

only supported when AM2000 is used for node manag ement.

Transistor Logic) level (0 to +5V) or balanced (RS-422) signal. The clock must be at 1.544 Mbi t /s .

(using NO and COM leads) or an open (using NC and COM leads). The relay in the NCC module supports Form C relay specificat ions .

These ports do not reflect line signals unless the module

. Use only when in CSU mode (DIU bus = none).

Verilink NCC 2020 User Manual

1

-5

Overview

1

-6 Verilink NCC 2020 User Manual

Chapter

2

Quick Set-Up

This section details a quick, step-by-step procedure for configuring the NCC 2020. For this quick configuration guide, the following assumptions are made:

• That you are using the NCC 2020 with a single DIU 2130 DSU

module in a Dual-line shelf. That you are dividing th e bandwidt h of an ESF/B 8ZS T1 evenly

•

between the two data ports of the DIU 2130. That one of the data ports is used for a router and the other

•

data port is for a time-division multiplexer.

Figure 2-1 Example Configuration

Dual-line Shelf

Router

Network Service Provider

Connect to Craft Port

NCC 2020

DIU 2130

Time Division Multiplexer

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

Using the Craft cable supplied with the NCC 2020, connect the modular (RJ-11) end to the port labeled the NCC 2020. Connect the other end of the Craft cable to your PC or terminal. If your PC has a DB-9 COM port connector, use a standard PC-AT serial cable to complete the connection.

RAFT

on the front panel of

C

Set your terminal , o r terminal program, to 19.2 kbit/s, 8 data bi ts, no parity, one stop bit, and

Verilink NCC 2020 User Manual

no flow control.

2

-1

Quick Set- Up

Login

Press The prompt YOUR PASSWORD? Initially there is no password, press The NCC 2020

NOTE:

NTER

.

E

YOUR PASSWORD? is displayed.

YOUR PASSWORD? YOUR PASSWORD?

NTER

.

E

Main Menu

is displayed:

The prompt line and menu names will refer to the NCC 2020 as a TAC 2010. This is because an NCC 2020 is a TAC 2010 T1 CSU to which the Cr aft interface and node controller functions have been added.

Figure 2-2 NCC 2020 Main Menu

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

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

SITE NAME:

SITE NAME:SITE NAME: NODE ID: 0

NODE ID: 0

NODE ID: 0NODE ID: 0

<- SLOT ->

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

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

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

1 DL [C] D

1 DL [C] D 1 DL [C] D 2

2

2 2 3

3

3 3 4

4

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

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

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

S) shelf/slot D) diagnostics

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

N) near element O) node administration

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

F) far element M) monitor alarms (OFF)

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

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

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

P) performance X) system log off

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

[1,1] NEAR TAC 2010 >

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

CSU Configuration

When installing an NCC 2020 o r TAC 2010 module which is to be used with any type of DIU 21xx module, always configure the CSU module before configuring anything on the DIU 21xx module. When the DIU 21xx is configured, it is connected logically to a CSU. At that instant the DIU gets inf ormation fro m the CSU as to which da ta bus in the shelf midplane to use. If the CSU has not been configured yet, the DIU 21xx will not get a correct bus assignment. This is why the CSU should be configured first.

Type “C” and press

NTER

E

Configuration Menu

. The

is presented.

2

-2 Verilink NCC 2020 User Manual

Figure 2-3 NCC 2020 Configuration Menu

CSU CONFIGURATION -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --

CSU CONFIGURATION -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --CSU CONFIGURATION -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --

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

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

-------<< eq <<-------| K) keep alive AIS |-------<< net <<-------

-------<< eq <<-------| K) keep alive AIS |-------<< net <<--------------<< eq <<-------| K) keep alive AIS |-------<< net <<------ W) framing SF | T) alm thld DEF | W) framing ESF

W) framing SF | T) alm thld DEF | W) framing ESF

F) format AMI | | F) format AMI

J) jitt buf 40 BITS | | J) jitt buf 40 BITS

R) eq crc REGEN | | R) net crc REGEN

Y) xcode yel TO NET | | Y) xcode yel OFF

M) distance 0-133 | | L) lbO 0 DB

M) distance 0-133 | | L) lbO 0 DB M) distance 0-133 | | L) lbO 0 DB

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

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

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

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

X) exit menu C1-C5) canned config

X) exit menu C1-C5) canned config X) exit menu C1-C5) canned config S) save csu config Q) restore csu config

S) save csu config Q) restore csu config

S) save csu config Q) restore csu config S) save csu config Q) restore csu config

A) diu bus NONE B) diu clock THRU

A) diu bus NONE B) diu clock THRU A) diu bus NONE B) diu clock THRU P) prm OFF

P) prm OFF

P) prm OFF P) prm OFF

Quick Set-Up

[1,1] NEAR TAC 2010 >

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

The factory default values for the NCC 2020 are shown. Th e unit is in CSU mode (DIU bus = NONE

NONE) and the network interface (shown at

NONENONE

top right) is set for ESF framing and AMI line co ding format. The DSX-1 Equipment interface, shown at top left, is set for SF (D4)

framing and AMI line code. For this quick set-up, the Equipment interface is not being used, as it would be in CSU mode or Drop and Insert mode. Because this example will use all 24 timeslots for data on a DIU 2130 module, Mux mode is required.

1. Type “A” and press appears: DSU Bus (1)NONE (2)A (3)B (4)C (5)B,D&I EQ (6)A,D&I

NET >

NET >. Select “2” to use Data Bus A. This means that the CSU

NET >NET >

DSU Bus (1)NONE (2)A (3)B (4)C (5)B,D&I EQ (6)A,D&I

DSU Bus (1)NONE (2)A (3)B (4)C (5)B,D&I EQ (6)A,D&I DSU Bus (1)NONE (2)A (3)B (4)C (5)B,D&I EQ (6)A,D&I

NTER

The prompt for bus selection

E

.

and the DIU 2130 will use Data B us A i n the shelf to pass data back and forth. The CSU is now in Mux mode. The EQPT LED changes from red to green.

2. Type “F” and press

Line Format(eq,net) 1(AMI,AMI) 2(AMI,B8ZS) 3(B8ZS,AMI)

Line Format(eq,net) 1(AMI,AMI) 2(AMI,B8ZS) 3(B8ZS,AMI) Line Format(eq,net) 1(AMI,AMI) 2(AMI,B8ZS) 3(B8ZS,AMI) 4(B8ZS,B8ZS) >

4(B8ZS,B8ZS) >. Select “4” for B8ZS (since the Equipment side

4(B8ZS,B8ZS) >4(B8ZS,B8ZS) >

NTER

E

The prompt for line format appears:

.

interface is not used, selection 2 would also work).

3. The default value for the density enforcement selection is not correct for a B8ZS T1. Use the “Z” command and select “1” to change it to NONE. B8ZS was developed to eliminate the need for density enforcement.

Verilink NCC 2020 User Manual

2

-3

Quick Set- Up

4. For this example, a Network Service Provider (NSP—the phone company) is providing a timing signal with a Digital Access and Cross-connect System (DACS). This is usually the case where an inter-exchange carrier (long distance company) is involved. When the carrier provides a timing signal, all other devices on the T1 must use that signal to derive their transmit clock. Use the “B” command for the DIU timing options and select “5” for NET (recovered NETwork clock).

5. There are no more changes required to the default CSU configuration to c onf igur e t his ex ample . Use the “X” command to return to the NCC 2020

Main Menu

.

Configuring the DIU 2130

For this example, the NCC 2020 is used with a DIU 2130 module in the right-hand side (slot 2) of a Dual-line shelf. The NCC 2020 connects directly to the T1 circuit and provides CSU functionality. The DIU 2130 presents two synchronous serial interfaces for connecting the Data Terminal Equipment (DTE) and provid es DSU functions.

Before any module may be configured, it must first be selected. When you first logged in to the NCC 2020 the default was that the NCC was selected. To configure the DIU 2130, first select it.

The S) shelf/slot

S) shelf/slot

S) shelf/slotS) shelf/slot

another. Type “S” and press another module appears: Enter shelf,slot >

command is used to navigate from one module to

NTER

E

Enter shelf,slot > For this example the

Enter shelf,slot > Enter shelf,slot >

The prompt for selecting

.

node has only one shelf (shelf #1) and the DIU 2130 is in slot two of that shelf. Type “

The prompt line returns as: [1,2] DIU 2130 (UPDAT E) >

and press

1,2”

[1,2] DIU 2130 (UPDAT E) > this indicates

[1,2] DIU 2130 (UPDAT E) > [1,2] DIU 2130 (UPDAT E) >

NTER

E

.

that the DIU 2130 has been selected.

NOTE:

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

NTER

current information, simply press

E

.

Configuration

Menu

Type “C” and press

Menu

.

NTER

to select the DIU 2130

E

There is a brief delay as the NCC module att emp ts to commu nic ate with a CSU module in Shelf 0, Slot 0 since this is the default value for CSU assignment in a new DIU 213 0 module. An ad dress of Shelf 0, Slot 0 is not a valid address. Modules are shipped this way in order that they may be added to a shelf without interfering with any existing applications. An error message appears:

No response from csu[ 0,0 ]

No response from csu[ 0,0 ].

No response from csu[ 0,0 ]No response from csu[ 0,0 ]

2

-4 Verilink NCC 2020 User Manual

Configuration

Quick Set-Up

The error message, in this case, means that the DIU 2130 is new and has never been assigned to any CSU module in any slot of any shelf. Ignore this error message.

Then the DIU 2130

Figure 2-4 DIU 2130 Configuration Menu

--- DIU 2130 CONFIGURATION/DIAGNOSTIC MENU ---

--- DIU 2130 CONFIGURATION/DIAGNOSTIC MENU --- --- DIU 2130 CONFIGURATION/DIAGNOSTIC MENU --S) save config Q) restore config X) exit menu

S) save config Q) restore config X) exit menu

S) save config Q) restore config X) exit menuS) save config Q) restore config X) exit menu

C) CSU [ 0,0 ]

C) CSU [ 0,0 ]C) CSU [ 0,0 ] T) timing source CSU

T) timing source CSU

T) timing source CSUT) timing source CSU

chnl 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

chnl 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 chnl 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Dp)port .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

Dp)port .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..Dp)port .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. ..

Lead Toggles DTR) DSR) RTS) CTS) DCD)

Lead Toggles DTR) DSR) RTS) CTS) DCD) Lead Toggles DTR) DSR) RTS) CTS) DCD) Forced Ports -/- -/- -/- -/- -/-

Forced Ports -/- -/- -/- -/- -/-

Forced Ports -/- -/- -/- -/- -/- Forced Ports -/- -/- -/- -/- -/-

Port 1 Port 2 Statistics

Port 1 Port 2 Statistics Port 1 Port 2 Statistics Mp) mode 56K 56K FW/HW Rev...1.6/0.8

Mp) mode 56K 56K FW/HW Rev...1.6/0.8

Mp) mode 56K 56K FW/HW Rev...1.6/0.8Mp) mode 56K 56K FW/HW Rev...1.6/0.8

Sp) scram/hdlc inv N/N N/N Battery.....OK

Sp) scram/hdlc inv N/N N/N Battery.....OKSp) scram/hdlc inv N/N N/N Battery.....OK

Kp) clocking ST ST DTE Intf....V.35/V.35

Kp) clocking ST ST DTE Intf....V.35/V.35Kp) clocking ST ST DTE Intf....V.35/V.35

Gp) LOS lead NONE NONE Data bus....NONE

Gp) LOS lead NONE NONE Data bus....NONEGp) LOS lead NONE NONE Data bus....NONE

Ep) enable loop YES YES Tp) test and monitor BEC

Ep) enable loop YES YES Tp) test and monitor BECEp) enable loop YES YES Tp) test and monitor BEC Np) near loopback OFF OFF Pp) monitor leads and status

Np) near loopback OFF OFF Pp) monitor leads and status

Np) near loopback OFF OFF Pp) monitor leads and statusNp) near loopback OFF OFF Pp) monitor leads and status Fp) far loopback OFF OFF A) enable alarm reporting...YES

Fp) far loopback OFF OFF A) enable alarm reporting...YES

Fp) far loopback OFF OFF A) enable alarm reporting...YESFp) far loopback OFF OFF A) enable alarm reporting...YES

Configuration Menu

is displayed.

[1,2] DIU 2130 >

[1,2] DIU 2130 >[1,2] DIU 2130 >

NOTE:

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

NTER

E

each time. Generally, the

NTER

E

key is used

after each command or value entry.

The CSU command is used to assign the DIU 2130 module to the CSU with which it will be used. Since the NCC 2020 contains a TAC 2010 CSU module, it will be used for the CSU in this example. Type “C”. At the prompt enter shelf >

enter shelf > type “1”, at the prompt enter slot >

enter shelf > enter sh elf >

enter slot >

enter slot >enter slot >

type “1” again. This selects the NCC 2020 in slot one of shelf one as the CSU for this DIU 2130 module.

The Timing Source defaults to CSU, meaning th at the DIU 2130 will derive its transmit clock from the source selected in the CSU configuration (recovered network clock in this example). This is correct for this example.

In the middle of the display, a line across the screen lists all 24 timeslots. The DS0 (timeslot) selection prompt appears at the beginning of the next line, Dp

Dp. The lowercase p is a variable,

DpDp

Verilink NCC 2020 User Manual

2

-5

Quick Set- Up

instead of typing “p” use a port number (1 or 2). For this example timeslots 1 through 12 are to b e us ed on data port number 1 and timeslots 13 through 24 are to be assigned to data port number 2.

Type “ Type “

, the prompt enter port 1 channels >

D1”

. This assigns timeslots one through twelve to data port

1-12”

enter port 1 channels > appears.

enter port 1 channels >enter port 1 channels >

number one. Now type “

“

13-24”

Press

.

NTER

E

, the prompt enter port 2 channels >

D2”

by itself to refresh the di splay with the new DS0

enter port 2 channel s > appears. Type

enter port 2 channel s >enter port 2 channels >

assignments.

Figure 2-5 DIU 2130 Configuration Menu

--- DIU 2130 CONFIGURATION/DIAGNOSTIC MENU ---

--- DIU 2130 CONFIGURATION/DIAGNOSTIC MENU --- --- DIU 2130 CONFIGURATION/DIAGNOSTIC MENU --S) save config Q) restore config X) exit menu

S) save config Q) restore config X) exit menu

S) save config Q) restore config X) exit menuS) save config Q) restore config X) exit menu

C) CSU [ 1,1 ]

C) CSU [ 1,1 ]C) CSU [ 1,1 ] T) timing source CSU

T) timing source CSU

T) timing source CSUT) timing source CSU

chnl 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

chnl 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 chnl 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Dp)port 01 01 01 01 01 01 01 01 01 01 01 01 02 02 02 02 02 02 02 02 02 02 02 02

Dp)port 01 01 01 01 01 01 01 01 01 01 01 01 02 02 02 02 02 02 02 02 02 02 02 02

Dp)port 01 01 01 01 01 01 01 01 01 01 01 01 02 02 02 02 02 02 02 02 02 02 02 02Dp)port 01 01 01 01 01 01 01 01 01 01 01 01 02 02 02 02 02 02 02 02 02 02 02 02

Lead Toggles DTR) DSR) RTS) CTS) DCD)

Lead Toggles DTR) DSR) RTS) CTS) DCD) Lead Toggles DTR) DSR) RTS) CTS) DCD) Forced Ports -/- -/- -/- -/- -/-

Forced Ports -/- -/- -/- -/- -/-

Forced Ports -/- -/- -/- -/- -/- Forced Ports -/- -/- -/- -/- -/-

Port 1 Port 2 Statistics

Port 1 Port 2 Statistics Port 1 Port 2 Statistics Mp) mode 56K 56K FW/HW Rev...1.6/0.8

Mp) mode 56K 56K FW/HW Rev...1.6/0.8

Mp) mode 56K 56K FW/HW Rev...1.6/0.8Mp) mode 56K 56K FW/HW Rev...1.6/0.8

Sp) scram/hdlc inv N/N N/N Battery.....OK

Sp) scram/hdlc inv N/N N/N Battery.....OKSp) scram/hdlc inv N/N N/N Battery.....OK

Kp) clocking ST ST DTE Intf....V.35/V.35

Kp) clocking ST ST DTE Intf....V.35/V.35Kp) clocking ST ST DTE Intf....V.35/V.35

Gp) LOS lead NONE NONE Data bus....A

Gp) LOS lead NONE NONE Data bus....AGp) LOS lead NONE NONE Data bus....A

Ep) enable loop YES YES Tp) test and monitor BEC

Ep) enable loop YES YES Tp) test and monitor BECEp) enable loop YES YES Tp) test and monitor BEC Np) near loopback OFF OFF Pp) monitor leads and status

Np) near loopback OFF OFF Pp) monitor leads and status

Np) near loopback OFF OFF Pp) monitor leads and statusNp) near loopback OFF OFF Pp) monitor leads and status Fp) far loopback OFF OFF A) enable alarm reporting...YES

Fp) far loopback OFF OFF A) enable alarm reporting...YES

Fp) far loopback OFF OFF A) enable alarm reporting...YESFp) far loopback OFF OFF A) enable alarm reporting...YES

[1,2] DIU 2130 >

[1,2] DIU 2130 >[1,2] DIU 2130 >

Lead toggles are used to determine whether the control leads on the synchronous serial interface will function in the normal way or be forced on. When the DTE does not assert control leads they can be forced on by typing the three letter abbreviation of the control lead. For this example the DTE supports normal control lead operation and the default values are appropriate.

Mode is used to determine the data rate of each of the timeslo ts assigned to the port. For an AMI T1 circuit the mode must be 56K. For the B8ZS T1 used in this example, 64K gives the user greater throughput. Use the “

M1”

and “

commands to set bo t h da ta

M2”

ports to 64K per DS0.

2

-6 Verilink NCC 2020 User Manual

Quick Set-Up

The remaining options are correct for this example. The T1 circuit and DTE should now be connected.

Once the CSU has been connected to the T1 circuit for at least fifteen minutes, meaningful perfor mance statistics will be availab le under the

Performance Menu

. See Chapter 4 for more details.

Within 15 seconds of connecting the T1 circuit, the NET LED on the front of the NCC 2020 should change from red to green. If it does not, the

Diagnostics Menu

may be used for troubleshooting. See

Chapter 5 for more information on diagnostics.

For more information on DIU 2130 modules see the

Manual

.

DIU 2130 User

The configuration options for the NCC 2020 are covered in detail in

Table 3-4, in Chapter 3 of this manual.

Verilink NCC 2020 User Manual

2

-7

Quick Set- Up

2

-8 Verilink NCC 2020 User Manual

Chapter

3

Configuration

This chapter covers using the Craft interface to configure the CSU portion of the NCC 2020 Node Controller, and use of the front panel thumbwheel switch es.

Using the Craft Interface

To access the Craft interface, connect a terminal or a computer running a terminal program to the port labeled panel of the NCC 2020 module .

Craft Port Terminal Setup

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

RAFT

on the front

C

Parity : None Stop Bits : One Flow Control: None The Verilink Craft interface does not assert any control leads.

NOTE:

Verilink provides one of two types of "Craft cable". Both versions of the Craft cable have an RJ-11 modular connector at one end. The original cable has a female DB-25 connector at the otherend and a more recent version has a DB-9 female connector. Connect the RJ11 modular connec tor to the port labeled NCC 2020 module.

The original Craft cable pinout is as follows:

Table 3-1 Verilink Craft Cable p/n 458-501788-008

Although the Craft interface in the NCC 2020 will adjust (autobaud) to your terminal rate, Verilink suggests using

19.2 kbit/s to conform to the requirements of other Verilink products.

CRAFT

on the front of the

DB-25 female RJ-11 modular Usage

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

Verilink NCC 2020 User Manual

3

-1

Configuration

Your computer may have a DB-9 connector, requ iring a second cable or adapter to complete the connection. For this purpose, use the same type of standard PC AT serial cable as would be used to connect to an external modem.

An alternative Craft cable uses DB-9 and RJ-11 connectors. It is wired according to the pinout shown below:

Table 3-2 DB-9 Craft Cable p/n 458-102119-008

DB-9 female RJ-11 modular Usage

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

Logging On

Figure 3-1 NCC 2020 Main Menu

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

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

SITE NAME:

SITE NAME:SITE NAME: NODE ID: 0

NODE ID: 0

NODE ID: 0NODE ID: 0

<- SLOT ->

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

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

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

1 DL C [D]

1 DL C [D] 1 DL C [D] 2

2

2 2 3

3

3 3 4

4

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

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

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

S) shelf/slot D) diagnostics

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

N) near element O) node administration

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

F) far element M) monitor alarms (OFF)

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

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

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

P) performance X) system log off

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

The first thing you will see after connecting your terminal and pressing the

YOUR PASSWORD?

YOUR PASSWORD? YOUR PASSWORD?

Initially there is no password, so just press The top or

NTER

key is:

E

Main Menu

is displayed.

NTER

E

again.

[1,1] NEAR TAC 2010 >

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

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

Main Menu

The

3

-2 Verilink NCC 2020 User Manual

commands are detailed in the table below.

Table 3-3 NCC 2020 Main Menu Commands

Menu Option Description Instructions

Configuration

S) shelf/slot Used to navigate from module

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

C) configuration Selects the

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

administration M) monitor alarms Toggles on/off the monitor

A) alm to net mgr Enables or disables sending

to module within a node.

end of the T1 circuit connected to the current module, functions only if ESF FDL has continuity.

Menu

Selects the

Administration Menu

alarms function.

alarms to a network management program.

See Management Channel Menu in this chapter for details on sending alarms.

Configuration

.

Performance Menu Diagnostics Menu Node

.

Enter the shelf number and slot number of the desired module, use a comma delimiter (1,2).

Once you have navigated to the remote CSU, you may configure or troubleshoot that module only. You will not be able to navigate to other modules in that node.

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

.See Chapter 4 of this manual.

.See Chapter 5 of this manual.

See Figure 3-4 and Table 3-5 below.

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

No alarm messages are displayed if monitor alarms is OFF.

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

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

X) log off Exits the

Main Menu.

The Configuration Menu

In the The letter “C” is defined in the Key as a CSU. In the case of a card in slot 1 of shelf 1, this would be the NCC 2020 card.

The NCC 2020 contains two c ompl etely sepa rate f uncti ons, a n ode controller and a T1 CSU.

The T1 CSU portion of an NCC 2020 is a TAC 2010 card. Once an NCC 2020 is installed in a node, additional T1 CSU requirements can be met by adding TAC 2010 modules.

Each node (group of shelves connected together) must have only one node controller card. This card should be located in slot 1 of shelf 1. If additional CSU cards are needed, use TAC 2010 cards instead of adding more NCC cards.

Therefore, a “C” located in the slot 1, shelf 1 position will represent an NCC 2020 while a “C” located at some other position will usually represent a TAC 2010.

Main Menu

The user is logged off.

shown in Figure 3-1, the element [C] is selected.

Verilink NCC 2020 User Manual

3

-3

Configuration

Use the command “C”, which brings up the

Configuration Menu

the element.

Figure 3-2 CSU Configuration Menu

CSU CONFIGURATION -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --

CSU CONFIGURATION -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --CSU CONFIGURATION -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --

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

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

-------<< eq <<-------| K) keep alive AIS |-------<< net <<-------

-------<< eq <<-------| K) keep alive AIS |-------<< net <<--------------<< eq <<-------| K) keep alive AIS |-------<< net <<------ W) framing SF | T) alm thld DEF | W) framing ESF

W) framing SF | T) alm thld DEF | W) framing ESF

F) format AMI | | F) format AMI

J) jitt buf 40 BITS | | J) jitt buf 40 BITS

R) eq crc REGEN | | R) net crc REGEN

Y) xcode yel TO NET | | Y) xcode yel OFF

M) distance 0-133 | | L) lbO 0 DB

M) distance 0-133 | | L) lbO 0 DB M) distance 0-133 | | L) lbO 0 DB

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

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

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

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

X) exit menu C1-C5) canned config

X) exit menu C1-C5) canned config X) exit menu C1-C5) canned config S) save csu config Q) restore csu config

S) save csu config Q) restore csu config

S) save csu config Q) restore csu config S) save csu config Q) restore csu config

A) diu bus NONE B) diu clock THRU

A) diu bus NONE B) diu clock THRU A) diu bus NONE B) diu clock THRU P) prm OFF

P) prm OFF

P) prm OFF P) prm OFF

for

[1,1] NEAR TAC 2010 >

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

Configuration Menu Commands

Some of the commands on the CSU

Configuration Menu

are shown on both the left and right sides of the screen. Commands that are used for both DSX-1 equipment and T1 network ports are repeated on both the equipment and the net side of the diagram. Command prompts for these options present pairs of values: the value for the equipment side is followed by the value for the network side.

For example, if connecting a D4 (SF) channel bank to an ESF T1 circuit the SF,ESF framing selection would be used.

Table 3-4 below describes the NCC 2020 CS U

Configuration Menu

options:

3

-4 Verilink NCC 2020 User Manual

Table 3-4 CSU Configuration Options

Menu Option Description Instructions

Configuration

W) framing Selects T1 framing

mode for both DSX-1 equipment port and T1 network port.

Selection for the Equipment side must match the configuration of the DSX-1 equipment.

Selection for the T1 network side must match the type of T1 installed by the network service provider.

F) format Selects AMI or B8ZS

for the DSX-1 equipment and T1 network line codes, must match T1 and equipment settings.

In Mux mode (where no DSX-1 equipment is used), only the second parameter is meaningful.

First value = DSX-1 equipment, second value = T1 circuit. 1(SF,SF) — D4 equipment and a D4 T1. 2(ESF,SF) — ESF equipment and a D4 T1. 3(SF,ESF) — D4 equipment and an ESF T1. 4(ESF,ESF) — ESF equipment and an ESF T1. 5(UF,UF) — unframed equ ipm en t on a n unf ra med T1 ( nev er

use this option on a T1 circuit provided by a telephone company).

6(SF,ZBT) — D4 equipment on a Z ero Bit Time Slot Insertion T1 (there are no ZBTSI T1 circuits, do not use this option).

7(ESF,ZBT) — ESF equipment on a ZBTSI T1 (there are no ZBTSI T1 circuits, do not use this option).

First value = DSX-1 equipment, second value = T1 circuit. 1(AMI,AMI) — AMI coded DSX-1 equipment on an AMI T1. 2(AMI,B8ZS) — AMI DSX-1 equipment on a B8ZS T1. 3(B8ZS,AMI) — B8ZS DSX-1 equipment on an AMI T1 (this

selection is problema tic unless the equipme nt is conf igured to use only 56K of each DS0 instead of 64K per DS0).

4(B8ZS,B8ZS) — B8ZS DSX-1 equipment on a B8ZS T1.

J) jitt buf Jitter Buffer selects

the size of the jitter buffer, in bits, on the DSX-1 and Network sides of the CSU.

Larger buff ers are more resistant to a jittery signal; smaller buffers introduce less delay.

R) eq crc Selects whether or

not the CSU will regenerate the CRC-6 error checking used in ESF framing on both, one, or no sides.

Y) xcode yel Selects whether

yellow alarms will be translated from the D4 bit 2 method to the ESF FDL method.

1(16,16) — Sets both buffers to 16 bit depth, less resilience to jitter and less delay.

2(40,16) — Sets DSX-1 side to 40 bits and network side to 16 bits.

3(16,40) — Sets the DSX-1 side to 16 bits and the network side to 40 bits.

4(40,40) — Sets the default value of 40-bit jitter buffer on both sides of the CSU.

1(PASS) — same type framing on both sides. 2(NET TO EQ) — ESF equipment on a non-E SF T1. 3(EQ TO NET) — non-ESF equipment on an ESF T1. 4(BOTH) — use in Drop and Insert mode if equipment and

T1 are both ESF. 1(OFF) — use for same type framing on both sides or to

have the CSU dr op yellow alarms with dissim ilar framing. 2(NET TO EQ) — ESF equipment and D4 T1. 3(EQ TO NET) — D4 equipment on an ESF T1. 4(BOTH) — not used.

Verilink NCC 2020 User Manual

3

-5

Configuration

Menu Option Description Instructions

M) distance Cable length option,

used to increase DSX1 signal strength when DSX-1 cable is long.

L) lbo Line build out is used

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

New T1 circuits installed by a telephone company in the USA will have a smart jack—use 0db.

K) keep alive Selects the method

used to guarantee sufficient pulse density is sent to the T1 when the DSX-1 equipment has faile d or is disconnected.

The value “none” should not be used on a commercial T1 circuit as it violates T1 standards (AT&T 54016 and ANSI T1.403).

Choices are: (1)0-133 (2)133-266 (3)266-399 (4)399-533 (5)533-655 — Select the value that most nearly equals the length of the cable between the CSU and the local DSX-1 equipment.

(1) 0 db — use this value if a smart jack (network termination device) ha s been inst al led by the tele p hon e carrier, or if the first active device on the T1 is between 2,000 and 3,000 feet away.

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

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

(1)none — no method of ke ep alive is used in the absence of a valid, framed DSX-1 signal . Do not us e this val ue on a T1 circuit provided by a telephone company.

(2)loop — when the DSX-1 signal fails, the CSU loops data received from the T1 back toward the T1 to meet pulse density requirements.

(3)ais — the CSU sends a pattern of unframed all ones (Alarm Indication Signal) to the network during a DSX-1 equipment failure, thus alerting the carrier and far-end equipment to trouble on the T1.

(4)fais — the CSU sends a framed pattern of all ones. This should not create a T1 level alarm, but voice switching equipment will see all 24 timeslots in a busy state.

T) alm thld Selects enabling or

disabling thresholds.

I) idle code Selects idle pattern to

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

Z) density Selects density

enforcement technique.

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

Density should never be set to NONE on an AMI T1.

(1)disable — Alarm threshold function is shut off. (2)default — Defaul t val ues for alarm thresholds are

enabled. 1(flag's) — idle code of 01111110 is sent in Facilities Data

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

Link when no other traffic is present. (1)NONE — no density enf orcemen t, use this value only and

always on a B8ZS T1. (2)12 — The CSU begins stuffing ones into the user

datastream after 12 consecutive zeroes. (3)62411— The CSU enforces AT&T publication 62411

density restrictions (average 12.5% minimum ones density). (4)80 0's — The CSU begins stuffing ones into the user

datastream after 80 consecutive zeroes (recommended). (5)15 0's — The CSU begins stuffing ones into the user

datastream after 15 consecutive zeroes.

3

-6 Verilink NCC 2020 User Manual

Menu Option Description Instructions

Configuration

C1-C5) canned config

S) save csu config Stores the current

Q) restore csu config Restores stored

A) diu bus Selects both the

Allows selection of any of five complete configurations which all use CSU mode (no DIU 21xx) and vary according to framing and line coding on EQ and Net sides.

CSU configuration.

configuration.

“Mode” in which the CSU will operate (CSU, Mux or Drop and Insert) as well as which midplane data bus, if any, will be used to exchange data with any DIU 21xx modules.

In Mux mode, the NCC 2020 EQPT LED is always green.

Canned configur ation #1, EQPT=SF/A MI NET=ESF/AM I. Canned configur ati o n #2 , EQ PT = ES F /AMI NET=ESF /AM I. Canned configur ati o n #3 , EQ PT = SF /AMI NET=ESF/B8ZS. Canned configur ati o n #4 , EQ PT = SF/ B 8 Z S NET=ESF/B8 Z S. Canned configuration #5, EQPT=ESF/B8ZS NET=ESF/B8ZS.

Configuration information for other modules in the node can be saved in non-volatile RAM in the NCC 2020.

If the configuration for a module has been previously stored, a replacement module can be placed in the same slot and sent the stored configuration.

(1)NONE — no data bus, CSU is in CSU mode. (2)A — Mux mode using data bus A. (3)B — Mux mode using data bus B. (4)C — Mux mode using data bus C. (5)B,D&I EQ — Drop and Insert mode toward equipment

(some DSX-1 timeslots routed to used.

(6)A,D&I NET — Drop and Insert toward the Net (some network timeslots routed to DSX-1 port, some others to one or more DIU modules). This is typical Drop and Insert.

DIU) rarely or neve r

LOCAL

B) diu clock Selects the source of

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

Note that in CSU mode (DIU Bus = NONE), this option is ignored, the NCC 2020 performs as though THRU timing were selected.

In Drop and Insert mode, use of THRU timing is suggested.

In Mux mode, if the far end CSU is set f or INT clock or if the carrier is using a DACS to provide a clock, then NET (recovered network clock) is required .

(1)THRU — The CSU derives transmit clock from the transmit datastream of the DSX-1 equipment, automatically selected in CSU mode, recommended in Drop and Insert mode, and invalid in Mux mode.

(2)INT — The CSU uses an internal oscillator to generate a

1.544 MHz clock. Used only in Mux mode, and then only at one end of a T1 on which the carrier uses no DACS.

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

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

(5)NET — The CSU uses the clock recove red from rec ei ve data on the T1 network port for the transmit clock, this is most often the desired option in Mux mode and is required if the network provides a clock (uses a DACS).

(6)EQ — The CSU recovers the DSX -1 T1 transmit clock to time the network transmit.

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

(8)DIU — The CSU uses a clock provided by DTE connected to a data port on a DIU 213x module. Tail circuit timing requires this option.

Verilink NCC 2020 User Manual

3

-7

Configuration

Menu Option Description Instructions

P) prm Performance

O) poll far end If enabled on a po int-

G) Alarm Determines whether

X) exit menu Exit this menu. Returns to the NCC 2020

Mode

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

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

or not alarm messages are presented.

The CSU portion of an NCC 2020, a TAC 2010 CSU, has three

1(NO) — Performance response messages received from the network are ignored, no m essages are sent.

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

(1) yes — far-end polling is used , req ui res FDL con t in uity from end to end, a DACS in the T1 usually terminates the FDL making this unusable, note that ESF is required to use this option.

(2) no — far-end polling is not supported. 0(Disable) — Alarm reporting is turned off. 1(Enable) — Alar m reporting is enabled, messages will

appear on the Craft terminal as alar m s occur and clear.

distinctly different modes of operation. The mode is determined

CSU Mode

by the selection for DIU bus

In CSU mode, the TAC 2010 does not use any data bus in the shelf

DIU bus on the

DIU busDIU bus

to pass data to any other module. All 24 timeslots in the T1 signal are passed, unmodified, to the DSX-1 equipment port. In the transmit directio n, the DSX-1 device is the timing source and the CSU behaves as if THRU timing is selected, despite what the menu may indicate. Any DIU 21xx modules present in the shelf are ignored in terms of data flow.

Main Menu

.

Configuration Menu

.

A TAC 2010 (or NCC 2020) is in CSU mode whenever the DIU bus option is set to NONE

NONE. A typical use of CSU mode would be for

NONENONE

voice-only PBX applications.

Mux Mode

In Mux mode, the DSX-1 equipment port is not used. All 24 timeslots of the T1 signal are available for use by some number of DIU 21xx module(s) assigned to the CSU. The CSU is configured to use one of the three data busses in the midplane of the shelf. Any associated DIU 21xx modules use this bus to accept receive data from and present transmit dat a to th e CSU. The CSU multiplexes data from up to 24 ports on up to 24 DIU modules into the T1 transmit datastream.

A TAC 2010 (or NCC 2020) module is i n Mux mo de when the DIU bus option is set to AAAA, BBBB or CCCC. A typical use of Mux mode would be for data-only applications.

3

-8 Verilink NCC 2020 User Manual

Configuration

Drop and Insert

Mode

Drop and Insert mode combines th e feat ures of CSU mode and Mu x mode. The DSX-1 equipment port is used for some of the T1 timeslots and data bus A is used to pass other timeslots to some DIU 21xx module(s). Since the CSU cannot control the transmit data rate of the DSX-1 equipment, the CSU is usually configu red to recover transmit cl ock from the DSX-1 datastream (THRU timing) .

Drop and Insert mode is established by selecting A, D&I NET

A, D&I NET for the

A, D&I NET A, D&I NET

DIU bus option. When this is done, a new option field appears in

Configuration Menu

the

Figure 3-3 Select D&I DSOs Field

A) diu bus A,D&I NET

A) diu bus A,D&I NET A) diu bus A,D&I NET

P) prm OFF

P) prm OFF P) prm OFF

D) select D&I DS0s (1,-,24)

D) select D&I DS0s (1,-,24) D) select D&I DS0s (1,-,24)

_ _ _ _ _ _ _ _ _ _ _ _

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

_ _ _ _ _ _ _ _ _ _ _ _

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

G) Alarm ENABLE

G) Alarm ENABLE G) Alarm ENABLE

, beneath the PRM field, as shown below:

This field is used to select the timeslots for data use. Any timeslots shown in this field will be placed on data bus A for use by a DIU 21xx module. The DSX-1 equipment will receive a framed all-ones signal in those timeslots, making them appear busy to a PBX. Timeslots not listed in this field are allowed to pass unmodified to the DSX-1 equipment.

Node Administration

In addition to the T1 CSU functions, the NCC 2020 is also a node controller. The beneath it, are used to configu re site information, access passwords, and modem info rmation.

Node Administration Menu

The the NCC 2020

Most of the commands on the documented in Table 3-5 below.

Node Administration Menu

Main Menu

. Figure 3-4 shows the options presented.

Node Administration Menu

, and submenus

is accessed by selecting “O” on

are

Verilink NCC 2020 User Manual

3

-9

Configuration

Figure 3-4 Node Administration Menu

--- NODE CONTROLLER MENU ---

--- NODE CONTROLLER MENU --- --- NODE CONTROLLER MENU ---

T) time

T) time T) time D) date

D) date

D) date D) date I) node id

I) node id

I) node id I) node id N) site name

N) site name

N) site name N) site name R) reset com ports

R) reset com ports

R) reset com ports R) reset com ports S) node controller status

S) node controller status

S) node controller status S) node controller status P) set privileged password

P) set privileged password

P) set privileged password P) set privileged password U) set unprivileged password

U) set unprivileged password

U) set unprivileged password U) set unprivileged password M) config management channel

M) config management channel

M) config management channel M) config management channel X) exit menu

X) exit menu

X) exit menu X) exit menu

[1,1] NEAR TAC 2010 >

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

Node Administration

Table 3-5 lists the commands available on the

Administration Menu

.

Node

Commands

Table 3-5 Node Administration Commands

Menu Option Description Instructions

T) time Sets the time of

day. D) date Sets the date. Enter new date (mm-dd-yy): — use format shown. I) node id Sets a numeric

identifier.

N) site name Sets an alpha-

numeric identifier

used to tell one

node from another.

R) reset com ports Resets the hardware

used for Craft port

and modem or

direct PC

connections.

Enter new time (hh:mm:ss): — use the format shown.

Maximum field length = ten digits, distinguishes one node from another, each node in a network must have a unique node ID.

Site Name: Tech Pubs NCC 2020 Change (Y/N)?

Site Name: Tech Pubs NCC 2020 Change (Y/N)?Site Name: Tech Pubs NCC 2020 Change (Y/N)?

selected, a second prompt appears:

New Site Name (40)

New Site Name (40)New Site Name (40)

alpha-nume ri c characters . No confirmation is required or given. The command

prompt returns immediately. Used if a port seems to be in a locked condition.

: — enter a site name using up to 40

— if yes is

3

-10 Verilink NCC 2020 User Manual

Menu Option Description Instructions

CONTROLLER STATUS

S) node controller status

P) set privileged password

U) set unprivileged password

Produces a short

display of

information about

the NCC functions.

Baud Rate = Craft

interface session

speed.

Last Reset = time of

last power-up.

Sets password for

the privileged level

operator.

Sets password for

the unprivileged

level operator.

CONTROLLER STATUS

CONTROLLER STATUSCONTROLLER STATUS

EXECUTION = ROM

EXECUTION = ROMEXECUTION = ROM

BAUD RATE = 19200

BAUD RATE = 19200BAUD RATE = 19200

RAM TEST = PASS

RAM TEST = PASSRAM TEST = PASS

DUART TEST = PASS

DUART TEST = PASSDUART TEST = PASS

LAST RESET = 5-14-98 9:19:35

LAST RESET = 5-14-98 9:19:35LAST RESET = 5-14-98 9:19:35

RTC TIME = 5-14-98 9:29:12

RTC TIME = 5-14-98 9:29:12RTC TIME = 5-14-98 9:29:12

Current Privileged Pass word : <> Chan ge (Y /N) ?

Current Privileged Pass word : <> Chan ge (Y /N) ?Current Privileged Pass word : <> Chan ge (Y /N) ?

Privileged users may make configuration changes.

Current Unprivileged Pa s sw o rd : <> Chan ge (Y /N ) ?

Current Unprivileged Pa s sw o rd : <> Chan ge (Y /N ) ?Current Unprivileged Pa s sw o rd : <> Chan ge (Y /N ) ?

Unprivileged users have read-only access, they may not make configur at i o n ch an ges .

Configuration

M) config management channel

X) exit menu Ex its this menu Returns to NCC 2020

Management Channel Menu

Figure 3-5 Management Channel Menu

---- MANAGEMENT CHANNEL ----

---- MANAGEMENT CHANNEL ---- ---- MANAGEMENT CHANNEL ----

Type T) auto config

Type T) auto configType T) auto config

---- alarm path configuration ----

---- alarm path configuration ---- ---- alarm path configuration ----

Wait W) 1S

Wait W) 1SWait W) 1S

Primary Secondary

Primary Secondary Primary Secondary

Use U1) send U2) none

Use U1) send U2) noneUse U1) send U2) none Rate B1) 9600 B2) 0

Rate B1) 9600 B2) 0

Rate B1) 9600 B2) 0Rate B1) 9600 B2) 0 Attempt R1) 255 R2) 0

Attempt R1) 255 R2) 0

Attempt R1) 255 R2) 0Attempt R1) 255 R2) 0 Interval I1) 10S I2) 0 S

Interval I1) 10S I2) 0 S

Interval I1) 10S I2) 0 SInterval I1) 10S I2) 0 S

Calls the

Management

Channel Menu

Required only if a dial-up modem connection will be used, see Table 3-6 below.

.

When M is selected on the NCC 2020

Management Channel Menu

the

Main Menu

.

Node Administration Menu

is presented:

,

Primary address......A1) Georgia

Primary address......A1) GeorgiaPrimary address......A1) Georgia

Secondary address....A2) Illinois

Secondary address....A2) IllinoisSecondary address....A2) Illinois

X) Exit menu

X) Exit menuX) Exit menu

[1,1] NEAR TAC 2010 >

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

Verilink NCC 2020 User Manual

3

-11

Configuration

Management

Channel Options

Management Channel Menu

The

is used to configure the DB-9 Management Port In interf ace. It may support an optional dial-up modem or a direct connecti on to either Access Manager 2000 or Node Manager.

For the NCC series, the Node Manager application supports direct or modem connections only.

Access Manager 2000 supports di rect or modem connections, and also supports connection through a stat-mux (Stati sti cal Multiplexer) or an X.25 PAD (Packet Assembler and Disassembler).

If a network manager program is being used, it will typically setup all of the values in this entire submenu. In that case these routines should not be used to make changes. Generally the user will observe values in these screens or make changes only when troubleshooting an in ability to connect to the network manager.

3

-12 Verilink NCC 2020 User Manual

Configuration

The options on the

Management Channel Menu

Table 3-6 below.

Table 3-6 Management Channel Menu Commands

Menu Option Description Instructions

Type T) Configure Management

Wait W) Use this option to

Channel - TYPE returns this list of choices:

type (1) direct (2) modem

type (1) direct (2) modem type (1) direct (2) modem (3) stat mux (4) auto (5)

(3) stat mux (4) auto (5)

(3) stat mux (4) auto (5) (3) stat mux (4) auto (5) none (6) x.25 pad >

none (6) x.25 pad >

none (6) x.25 pad >none (6) x.25 pad >

Selections 3 and 6 may be used only with Ac cess Manager 2000 as the network manag em ent program.

Node Manager supports direct or modem connections to an NCC module.

determine how long the NCC card will wait after an alarm has occurred before it attempts to report that alarm to the management PC.

(1) direct —Select only if the NCC is co-located with the PC running AM2000 or Node Manager and it is directly connected via an RS-232 cable.

(2) modem —Select if the NCC has a modem connected. Use a Verilink part number 458-501771008 cable to make the connection from the

MANAGEMENT PORT IN

module to the DB-25 connector on your modem. (3) stat mux —Select if you are using a Statistical

Multiplexer. This selection tends to be very problematic, as stat muxes are not known for reliability.

(4) auto —Do not select auto. (5) none —Select if there is no PC running AM2000, or

if you do not wish for this NCC card to initiate calls to the Network Manager.

(6) x.25 pad —Select if you are using an X.25 PAD.

interval 0-59S or 1-59M or 1-24H >

interval 0-59S or 1-59M or 1-24H >interval 0-59S or 1-59M or 1-24H >

Enter a numeric value in one of the ranges shown. Include the letter “S” for that many seconds; “M” for minutes or use “H ” if yo u really want to wait fo r h ours before learning about alarm conditions.

Example—“15S” fo r fifteen seconds.

on the rear interface connector

are documented in

Use U1) Use U2)

Rate B1) Rate B2)

Attempt R1) Attempt R2)

This screen selects behavior for the Primary (U1) and Secondary (U2) communication paths back to the management PC.

If both primary and secondary paths are defined, the NCC will try first one number and then the other until a management PC is reached.

B1 selects the baud rate for the primary path to a management PC.

B2 selects the baud rate for the secondary path to a management PC.

Selects the number of tries (attempts to connect to the network manager) for the primary (R1) and secondary (R2) paths to the management PC(s).

For each command, U1 or U2, the following prompt is returned:

use (1) none (2) send (3) backup >

use (1) none (2) send (3) backup >use (1) none (2) send (3) backup >

Select (1) to disable this function. Select (2) to send according to the other options in

this menu. Select (3) if this is your backup method of reporting

alarms.

The following prompt appears:

rate (1) 1200 (2) 2400 (3) 4800 (4) 9600 >

rate (1) 1200 (2) 2400 (3) 4800 (4) 9600 > rate (1) 1200 (2) 2400 (3) 4800 (4) 9600 >

Choose the highest rate in bits per second that your communication path supports.

The following prompt appears:

retry 0 to 254 or 255 for continuou s >

retry 0 to 254 or 255 for continuou s >retry 0 to 254 or 255 for continuou s >

Enter a number for the attempts to be made.

Verilink NCC 2020 User Manual

3

-13

Configuration

Menu Option Description Instructions

interval 0-59S or 1-59M or 1-24H >

Interval I1) Interval I2)

Selects the delay between tries (attempts to connect to the network manager) for the primary (I1) and secondary (I2) paths to the management PC(s).

interval 0-59S or 1-59M or 1-24H >

interval 0-59S or 1-59M or 1-24H >interval 0-59S or 1-59M or 1-24H >

Enter a numeric value in one of the ranges shown. Include the letter “S” for that many seconds; “M” for minutes or use “H ” if yo u really want to wait fo r h ours before learning about alarm conditions.

Example—“15S” fo r fifteen seconds.

Primary

address......A1)

Primary

address......A2)

X) Exit menu Exits to menu above. Returns to

Use this prompt to enter the digits used to establish a call for the primary path (A1) or the secondary path (A2) used to reach the network manager PC.

If your type selection is MODEM, this field would be the phone number for the modem to dial.

If your type selection is X.25 PAD, this is the string your particular PAD requires to establish a call to the AM2000 PC.

This field is left empty for permanent stat mux connections or direct connection.

Firmware Upgrade Procedures

Firmware upgrades to an NCC 2020 may be do ne in two ways:

Replacing the socketed EEPROMS which hold the node

•

management and CSU firmware. Using either Access Manager 2000 or Node Manager to

•

download new code to the module.

Replacing EEPROMs

The TAC 2010 CSU firmware in an N CC 2020 resides in the EEPRO M in socket U11.

Node Administration Menu

.

The NCC 2020 management firmware resi des in the EEPROM in socket U22.

Verilink offers upgrade kits which include one each of these two integrated circuits. Contact Verilink Technical Support if you require a firmware upgrade.

Network Management Programs

Both Access Manager 2000 and Node Manager offer download procedures which may be used to upgrade either the CSU or network management portions of an NCC 2020.

For details on using Access Manager 2000 to upgrade an NCC 2020 or the other modules it controls, refer to the

User Manual

3

-14 Verilink NCC 2020 User Manual

.

Access Manager 2000

For details on using Node Manager to upgrad e an NCC 2020 or the other modules it contro ls, refer to the

Thumbwheel Switches

The thumbwheel switches on the front panel of the NCC 2020 are provided as a measure of last resort for configuring the NCC, and/or application modules it controls, when terminal access to the Craft interface is not possible.

It is preferred practice to use the Craft interface or a network management program instead of th e thumbwheels.

Configuration

Node Manager User Manual

.

Thumbwheel Procedure

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

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

2. Rapidly press the EXE pushbutton twice, as if double-clicking a mouse. If the NCC 2020 accepts yo ur double-click, the STAT LED on the selected module will begin to blink green to off. If the STAT LED does not begin to blink , try double clicking agai n at a slightly faster or slower rate. Do not proceed to step 3 until the STAT LED on the desired module begins to blink. Once the STAT LED does begin to blink, steps 3 and 4 must be completed within 60 seco nds or the thumbwheel command procedure will time-out.

3. Set the thumbwheel switches to the command value to be used, per Table 3-7 below.

4. Double-click the EXE pushbutton again. If the NCC 2020 module accepts your double-click, the STAT LED on the selected module will stop blinking green to off and will return to some other state. If the STAT LED on the module continues to blink green to off, the NCC 2020 did no t accept your doubleclick. Try double-clicking again, at a faster or slower rate. If you are not successful within 60 seconds of the time you selected the module in step 2, the module will timeout and return to its normal state . If this happens, start over with step 1 of this procedure.

Thumbwheel Commands

Table 3-7 lists the commands available through the front panel

thumbwheels.

Verilink NCC 2020 User Manual

3

-15

Configuration

Table 3-7 Thumbwheel Switch Commands

Code Applies to Description

01 to 30 Any of first

30

modules

31 NCC 2020 Accesses the controller functionality of the NCC 2020 no de controller

32 NCC 2020 Resets the modem interface by sending the configured modem

40 NCC 2020

TAC 2010

41 NCC 2020

TAC 2010

42 NCC 2020

TAC 2010

43 NCC 2020

TAC 2010

44 NCC 2020

TAC 2010

45 ALL The configuration of the select ed module —ha ving been previously

Selects a module in the indicated slot, up to slot 30. A node controlled by an NCC module may contain a maximum of 30 modules.

(not the T1 CSU portion). For an NCC 2020 in slot 1 of shelf 1, use address 01 to set CSU options.

initialization string to the DB-9 modem port. Canned configurati o n #1, EQPT=SF/AMI NET=ESF/AMI.

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

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

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

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

stored— is restored to the module from the NCC 2020.

46 ALL The configuration of the module selected in steps 1 and 2 of this

47 NCC 2020

TAC 2010

TAC 2130

48 NCC 2020

TAC 2010

TAC 2130

49 NCC 2020

TAC 2010

TAC 2130

50 NCC 2020

TAC 2010

51 NCC 2020

TAC 2010

52 NCC 2020

TAC 2010

thumbwheel command sequence is stored in the NCC 2020. If the module is replaced or loses its configurat ion later, command 45 may be used to restore it.

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

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

IF NO SMART JACK IS PRESENT

(repeater, T3 mux, far CSU) is 1000 to 2000 feet away. Network LBO = 15 dB; Attenuates transmit signal by 15db,

IF NO SMART JACK IS PRESENT

(repeater, T3 mux, far CSU) is 0 to 1000 feet away. Selects DSX-1 Equipment cabl e length of 0-132 ft.

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

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

, implies that the first active device

USE ONLY

3

-16 Verilink NCC 2020 User Manual

Code Applies to Description

Configuration

53 NCC 2020

TAC 2010

54 NCC 2020

TAC 2010

55 NCC 2020

TAC 2010

56 NCC 2020

TAC 2010

DIU 2140

57 NCC 2020

TAC 2010

DIU 2140

58 NCC 2020

TAC 2010

DIU 2140

59 NCC 2020

TAC 2010 TAC 2130

60 NCC 2020

TAC 2010

TAC 2130

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

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

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

Sets data bus to A (Mux mode).

Sets data bus to B (Mux mode).

Sets data bus to C (Mux mode).

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

Sends framed QRSS to far end.

61 NCC 2020

TAC 2010

TAC 2130

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

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

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

80 DIU 2130

TAC 2130

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

kbit/s.

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

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

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

Verilink NCC 2020 User Manual

3

-17

Configuration

Code Applies to Description

81 TAC 2130

DIU 2130

82 TAC 2130

DIU 2130

83 TAC 2130

DIU 2130

84 TAC 2130

DIU 2130

85 TAC 2130

DIU 2130

86 TAC 2130

DIU 2130

87 TAC 2130

DIU 2130

88 TAC 2130

DIU 2130 DIU 2131

89 TAC 2130

DIU 2130

Canned configuration #1 , assigns all 24 timeslots to data port #1.

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

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

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

Canned configuration #5assig ns ti meslots 1-4 to data port #1 and timeslots 5-8 to data port #2 (data port #2 ignored by TAC 2130).

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

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

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

232). Sets DTE port(s) clock to inverted ST (ST

Data lead during positive going transition of transmit clock signal.

) data port samples Transmit

90 TAC 2130

DIU 2130

91 TAC 2130

DIU 2130 92 DIU 2130 Unassigns Port 2 timeslot(s). 99 NCC 2020 Resets NCC password for the Craft interface to the default condition

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

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

Unassigns Port 1 timeslot(s).

(no password).

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

3

-18 Verilink NCC 2020 User Manual

Chapter

4

Performance Monitoring

Once the NCC 2020 is installed, the performance monitoring routines allow you to monitor the performance of the T1 circuit.

The NCC 2020 maintains a histo ry of the T1 circui t performance fo r the previous 24 hours and offers the ability to examine various tables.

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

(Extended SuperFra me), the NCC 2020 maintains performance records in 15-minute intervals. After an NCC 2020 has been operating for 24 hours, there will be 96 of these 15-minute intervals stored in the CSU registers.

Performance Monitoring Menu

Most of the information accessible under the

Monitoring Menu

checking, used to detect errored seconds, is only present on an ESF T1.

Performance

is only available with an ESF T1. CRC-6 error

Performance Monitoring Menu Display

Performance Monitoring Menu

The at the NCC 2020

Performance Monitoring Menu

The information and a Reset Registers command to clear all stored information.

Figure 4-1 Performance Monitoring Menu

--- PERFORMANCE MONITORING ---

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

N) 1 hour network

N) 1 hour network N) 1 hour network

E) 24 hour es

E) 24 hour es E) 24 hour es

B) 24 hour bes

B) 24 hour bes B) 24 hour bes

S) 24 hour ses

S) 24 hour ses S) 24 hour ses

U) 24 hour uas

U) 24 hour uas U) 24 hour uas

L) 24 hour lofc

L) 24 hour lofc L) 24 hour lofc

R) reset registers

R) reset registers R) reset registers

X) exit menu

X) exit menu X) exit menu

[1,1] NEAR TAC 2010 >

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

Main Menu

.

is accessed by typing “P” while

offers six options to display

Verilink NCC 2020 User Manual

4

-1

Performance Monitoring

Definitions

The acronyms shown on the

Performance Monitoring Menu

described in Table 4-1 below

Table 4-1 Performance Monitoring Menu Acronyms

Acronym Meaning

ES Errored Second — any second duri ng which one or more bit

BES Bursty Errored Seconds — a second having between 2 and

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

UAS Unavailable Second — any second during which an

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

errors have been detected.

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

counted.

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

Unavailable Signal State occurs. An Unavailable Signal State condition is declared after ten

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

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

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

are

One Hour Network

The One Hour Network function produces screen output which lists a 24-hour summary for each of the parameters described in Table

4-1 above. Also shown are counts for each of the same al arm

conditions for the preceeding hour, in four 15-minute intervals.

Figure 4-2 One Hour Network Report

ONE HOUR PERFORMANCE DATA

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

5-14-98 14:10:44

5-14-98 14:10:445-14-98 14:10:44 Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020Site Name: Tech Pubs NCC 2020 ELEMENT ID 1, 1

ELEMENT ID 1, 1

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

Valid Intervals 96 Seconds in Current Interval 464

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

ES UAS BES SES LOFC

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

0 0 0 0 0 24 Hour Total

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

0 0 0 0 0 Current Interval

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

0 0 0 0 0 Interval 1

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

0 0 0 0 0 Interval 2

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

0 0 0 0 0 Interval 3

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

0 0 0 0 0 Interval 4

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

[1,1] NEAR TAC 2010 >

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

4

-2 Verilink NCC 2020 User Manual

Performance Monitoring

24-hour Errored Seconds

The 24-hour Errored Seconds selection on the

Monitoring Menu

produces a screen showing the errored second counts for each of the last 96 fifteen-minute intervals. Errored seconds are the least serious of t he error conditions tra cked by th e CSU. A typical errored seconds display is shown below in Figure

4-3:

Figure 4-3 24-Hour Errored Seconds

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

24 HOUR ES PERFORMANCE DATA 5-14-98 14:25:2624 HOUR ES PERFORMANCE DATA 5-14-98 14:25:26 Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020Site Name: Tech Pubs NCC 2020 1, 1

1, 1

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

Valid Intervals 96 Seconds in Current Interval 627

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

ES in 24 Hours 23 ES in Current Interval 0

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Performance

[1,1] NEAR TAC 2010 >

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

Verilink NCC 2020 User Manual

4

-3

Performance Monitoring

24-Hour Bursty Errored Seconds

Bursty Errored Seconds are more sev e re than errored seconds and may cause some applications to lose sessions or suffer excessive retransmissions.

A typical 24-Hour Bursty Errored Seconds display is shown below in

Figure 4-4:

Figure 4-4 24-Hour Bursty Errored Seconds

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

24 HOUR BES PERFORMANCE DATA 5-14-98 14:43:4624 HOUR BES PERFORMANCE DATA 5-14-98 14:43:46 Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020Site Name: Tech Pubs NCC 2020 1, 1

1, 1

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

Valid Intervals 96 Seconds in Current Interval 829

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

BES in 24 Hours 0 BES in Current Interval 0

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[1,1] NEAR TAC 2010 >

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

4

-4 Verilink NCC 2020 User Manual

Performance Monitoring

24-Hour Severely Errored Seconds

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

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

Figure 4-5 24-Hour Severely Errored Seconds

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

24 HOUR SES PERFORMANCE DATA 5-14-98 14:48:4624 HOUR SES PERFORMANCE DATA 5-14-98 14:48:46 Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020Site Name: Tech Pubs NCC 2020 1, 1

1, 1

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

Valid Intervals 96 Seconds in Current Interval 231

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

SES in 24 Hours 0 SES in Current Interval 0

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[1,1] NEAR TAC 2010 >

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

Verilink NCC 2020 User Manual

4

-5

Performance Monitoring

24-Hour Unavailable Seconds

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

Once a CSU begins count ing U navai lab le Sec ond s it will con tinue to do so until ten consecutive seconds pass, all of which are error free or have a lower error rate than a Severely Errored Second.

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

Figure 4-6:

Figure 4-6 24-Hour Unavailable Seconds

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

24 HOUR UAS PERFORMANCE DATA 5-14-98 15:13:0324 HOUR UAS PERFORMANCE DATA 5-14-98 15:13:03 Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020Site Name: Tech Pubs NCC 2020 1, 1

1, 1

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

Valid Intervals 96 Seconds in Current Interval 786

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

UAS in 24 Hours 0 UAS in Current Interval 0

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[1,1] NEAR TAC 2010 >

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

4

-6 Verilink NCC 2020 User Manual

Performance Monitoring

24-Hour Loss of Frame Count

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

user data

as long as the Out Of Frame (OOF) co ndition continues.

The 24-Hour Loss Of Frame Count indicates how many seconds, per fifteen-minute interval, were during an Out Of Frame condition. These are seconds during which yo u may be certain that no user data passed. Since there are 900 seconds in a fifteen-minute period, the value for any one interval will never exceed 900.

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

Figure 4-7 24-Hour Loss Of Frame Count

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

24 HOUR LOFC PERFORMANCE DATA 5-14-98 15:28:4824 HOUR LOFC PERFORMANCE DATA 5-14-98 15:28:48 Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020

Site Name: Tech Pubs NCC 2020Site Name: Tech Pubs NCC 2020 1, 1

1, 1

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

Valid Intervals 96 Seconds in Current Interval 830

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

LOFC in 24 Hours 0 LOFC in Current Interval 0

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

all

[1,1] NEAR TAC 2010 >

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

Reset Registers

The Reset Registers command on the

Menu

is used to clear out all of the accumulated information being

Performance Monitoring

held in the ESF registers. All of the values in the displays available from the

Performance Monitoring Menu

are reset to zero, the

number of valid intervals is reset to zero. A typical use of this option would be at the completion of an

installation. If a T1 facility has been serviced and it is believed that any problems have been corrected it may be desirable to reset the registers so that any errors reported are known to be new.

Verilink NCC 2020 User Manual

4

-7

Performance Monitoring

4

-8 Verilink NCC 2020 User Manual

Chapter

5

Using Diagnostics

Diagnostics

While installing your NCC 2020, or after it has been placed into service, the Diagnostic routines allow you to troubleshoot or verify the T1 circuit and Verilink equipment. The front panel of the NCC 2020 has three LEDs which give a visual in dication of alarm conditions.

Display elements on the information about possible alar m co nditions as well as offering command options which may be use d to establish and te rminate loopbacks and test patterns.

A typical way of using the following steps:

1. Establish a loopback somewhere in the circuit path.

Diagnostics Menu

give current

might involve the

Alarm Status

2. Start tra ns mitting a test pat te rn.

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

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

further away to test more of the circuit path, or

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

to determine the source of the problem.

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

In addition to off e ring the ability to put up and take down loopbacks and test patterns, the information about the current status of the DSX-1 equipment interface and DS-1 network interface.

The top half of the of ASCII characters which represents the operation of the CSU. The equipment interface is shown on the left and the network interface is shown on the right. In the area to the left and right of the line drawing of a framer, status information is represented by words displayed in upper case characters.

Diagnostics Menu

includes a drawing made up

also offers

Verilink NCC 2020 User Manual

5

-1

Diagnostics

Diagnostics Menu

A sample of the In this example, the word PULSES appears on both the equipment

(left hand) and network (right hand) sides of the display. When the words PULSES appears alone, that interface has no alarms.

Figure 5-1 Diagnostics Menu

CSU DIAGNOSTIC -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --

CSU DIAGNOSTIC -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --CSU DIAGNOSTIC -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --

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

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

| |

| | | |

-------<< eq <<-------|----------|f|----------|-------<< net <<-------

-------<< eq <<-------|----------|f|----------|-------<< net <<--------------<< eq <<-------|----------|f|----------|-------<< net <<------ | |r| | PULSES

| |r| | PULSES

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

| |a| |

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

| |m| |

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

PULSES | |e| |

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

------->> eq >>-------|----------|r|----------|------->> net >>-------

------->> eq >>-------|----------|r|----------|------->> net >>-------------->> eq >>-------|----------|r|----------|------->> net >>------ | |

| |

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

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

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

X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC)

X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC)X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC)

__eq loops__ __err counter__ __net signals__ __net loops__

__eq loops__ __err counter__ __net signals__ __net loops__ __eq loops__ __err counter__ __net signals__ __net loops__ R) repeater A) show cntr 1) qrss L) line

R) repeater A) show cntr 1) qrss L) line

R) repeater A) show cntr 1) qrss L) line R) repeater A) show cntr 1) qrss L) line E) equip B) clear cntr 2) 3 in 24 P) payload

E) equip B) clear cntr 2) 3 in 24 P) payload

E) equip B) clear cntr 2) 3 in 24 P) payload E) equip B) clear cntr 2) 3 in 24 P) payload

3) 1 in 8 U) inband up

3) 1 in 8 U) inband up 3) 1 in 8 U) inband up N) end tests 4) all 1s D) inband down

N) end tests 4) all 1s D) inband down

N) end tests 4) all 1s D) inband down N) end tests 4) all 1s D) inband down

Diagnostics Menu

is shown below in Figure 5-1.

[1,1] NEAR TAC 2010 >

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

Since a T1 circuit operates by sending pulses to represen t a logical “one”, the indication PULSES means that the T1 CSU portion of this NCC 2020 does see pulses on both the equipment (left side) and network (right side) interfaces. Therefore, of all the messages which might appear on this menu in upper case characters, PULSES is the only message which does not represent an alarm condition. Pulses are the logical opposite of a Loss Of Signal (LOS) condition.

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

from an NCC 2020 module. T he word PULSES no longer ap pears on the right hand side where network status is indicated. Instead, a number of alarm conditi ons are rep ort ed inc ludi ng ALARM, FRAME LOSS, CRC ERRORS, and SIGNAL LOSS.

NOTE:

Whenever a T1 CSU reports Signal Loss, it will report other alarms as well. The other alarms are caused by the signal loss condition. Ignore the other ala rms and find the cause of the Signal Loss to restore the T1 to service.

5

-2 Verilink NCC 2020 User Manual

Figure 5-2 Diagnostics Menu

CSU DIAGNOSTIC -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --

CSU DIAGNOSTIC -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --CSU DIAGNOSTIC -- FW Rev 1.4 HW Fab 0.8 Type NCC 2020 --

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

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

| | FRAME LOSS

| | FRAME LOSS | | FRAME LOSS

-------<< eq <<-------|----------|f|----------|-------<< net <<-------

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

| |r| | SIGNAL LOSS

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

| |a| |

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

| |m| | CRC ERRORS

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

PULSES | |e| |

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

------->> eq >>-------|----------|r|----------|------->> net >>-------

------->> eq >>-------|----------|r|----------|------->> net >>-------------->> eq >>-------|----------|r|----------|------->> net >>------ | |

| |

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

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

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

X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC)

X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC)X) exit menu Y) enable loops Z) reset alarm T) test time (15 SEC)

__eq loops__ __err counter__ __net signals__ __net loops__

__eq loops__ __err counter__ __net signals__ __net loops__ __eq loops__ __err counter__ __net signals__ __net loops__ R) repeater A) show cntr 1) qrss L) line

R) repeater A) show cntr 1) qrss L) line

R) repeater A) show cntr 1) qrss L) line R) repeater A) show cntr 1) qrss L) line E) equip B) clear cntr 2) 3 in 24 P) payload

E) equip B) clear cntr 2) 3 in 24 P) payload

E) equip B) clear cntr 2) 3 in 24 P) payload E) equip B) clear cntr 2) 3 in 24 P) payload

3) 1 in 8 U) inband up

3) 1 in 8 U) inband up 3) 1 in 8 U) inband up N) end tests 4) all 1s D) inband down

N) end tests 4) all 1s D) inband down

N) end tests 4) all 1s D) inband down N) end tests 4) all 1s D) inband down

Diagnostics

[1,1] NEAR TAC 2010 >

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

Status Messages

The status messages which may appear on the

Diagnostics Menu

are listed in Table 5-1 below:

Table 5-1 Diagnostic Menu Status Messages

Message Meaning

ALARM Yellow Alarm (RAI) —The CSU is receivi ng a Re mote Ala rm Indi ca tion Signa l on the

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

SIGNAL LOSS Los s Of Signal (LOS) —The CSU does not detect any pulses on the port, this is the

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

LOW DENSITY The T1 signal on the port does not meet the required average ones density of 12.5%.

BPV The CSU is detecting Bipolar Violation s on th e port. Two o r more p ulses in a ro w were

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

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

worst possible alarm condit ion on a T1 port, ignore other alarms and resolve the cause of the LOS first.

feature of ESF framing. Applies only to T1 circuits or equipment using ESF framing.

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

EXT CLK LOSS The CSU is configured to use an external clock signal and that signal is not detected.

PULSES Not an alarm conditio n. The CSU does see valid pulses on the port. When a CSU is in

Mux mode, PULSES should always be displayed on the equipment side of the menu. In Mux mode, only synchronous serial interfaces are used and the CSU does not expect to see any particular framed pattern of pulses.

Verilink NCC 2020 User Manual

5

-3

Diagnostics

Diagnostic Commands

There are seventeen command options available on the NCC 2020 diagnostics menu. Table 5-2 lists all of these commands.

Drawings which illustrate the various loopbacks can be found in the manual

Table 5-2 Diagnostic Commands

Menu Option Description Instructions

X) exit menu Exits to menu above. Returns to the NCC 2020 Y) enable loops Determines whether

CSU will res pond to received standard CSU loop-up codes.

Z) reset alarm Clears alarm history

for the current 15 minute interval.

T) test time Sets the length of time

tests and loopbacks will be allowed to run.

FOREVER is suggested by Verilink.

R) repeater Establishes a repeater

loopback.

AS2000, The Basics

Normally this selection should be enabled. In a telephone carrier central office environment this option

might be disabled. Extinguishes red LED alarm conditions on front panel of the

NCC 2020 CSU after installation or after resolving a service problem.

ENTER INTERVAL (DEFAULT, x SEC, x MIN, x HR, FOREVER ): Type FOREVER or type a numeric value followed by SEC for

seconds, MIN for minutes, HR for hours. Example “

The CSU loops data it is about to transmit back to the receive circuitry. Local equipment should see its own signal.

45MIN”

.

Main Menu

.

Useful for testing local CSU hardware.

E) equip Establishes an

A) show cntr Displays test error

B) clear cntr Resets test erro r

N) end tests Ends tests and

1) qrss Starts QRSS test. CSU transmits a Quasi-Random test pattern while monitoring

2) 3 in 24 Starts 3 in 24 test. CSU transmits a 3-in-24 test pattern while monitoring the

equipment loopback.

counter, increments for each error detected.

counter.

local

loopbacks.

This test is functionally equivalent to placing a T1 loopback plug into the network port of the CSU.

The local DSX-1 equ ipment port is looped bac k directly to the local equipment. Useful for verifying cable connections.

Used to monitor a test in progress. When the CSU transmits a test pattern, it expects to receive the same test pattern unaltered, either from a loopback or a compatible test signal source.

Used to reset the test error counter to zero after a test or before a new test.

Used to end any running test patterns as well as terminating any loopbacks in the local CSU.

the receive pair for the same signal to be returned. This test is widely supported by telepho ne carrie r test

facilities. This test pattern is valid for all T1 circuit types.

receive pair for the same signal to be returned. 3-in-24 guarantees that of any 24 bits sent, at least 3 will be

ones, thus strings of twenty one contiguous zeroes are possible.

Because this pattern may have strings of up to 21 zeroes in a row, it may fail on some perfectly good AMI T1 cir cuits as equipment in the circuit enforces ones density.

5

-4 Verilink NCC 2020 User Manual

Menu Option Description Instructions

Diagnostics

3) 1 in 8 Starts 1 in 8 test. C SU transmits a 1-in-8 pattern, which guarantees one bit of

4) all 1 Starts all ones pattern. Use of this pattern is

suggested whenever any T1 circuit is tested.

L) line Initiates a line

loopback.

P) payload Initiates a payload

loopback.

U) inband up Se nds a standard CSU

loop-up code toward the far end CSU.

D) inband down Sends a standard CSU

loop-down code to the far end CSU.

every 8 will be a one, while monitoring the receive pair for the same signal to be returned.

This test pattern is valid for all T1 circuit types. The CSU transmits a framed pattern of all ones and monitors

receive data for the same pattern. Because it produces maximum current levels, this test is

especially good at finding some problems like bad repeater cards or resistive punchdown connections.

All ones is a valid test on all T1 circuits. Line loopback faces the T1 circuit. All data received from the

T1 circuit is sent back to the T1 circuit. This is the same loopback which o ccu rs when a CSU rece ive s

a loop-up code from the network. Payload loopback faces the T1 circuit like the line loopback.

A payload loopback passes through more of the CSU circuitry while the line loopback occurs closer to the network port.

Under normal circumstances, sendi ng the line loop-up code will cause the far end CSU to enter a line loopback state.

Under normal circumstances, sending the line loop-down code will ter minate a line loo pback state in the far end CSU.

Verilink NCC 2020 User Manual

5

-5

Diagnostics

Front Panel LEDs

This section describes th e function of the NCC 20 20 LED i ndicato rs.

EQPT LED

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

Table 5-3 Equipment LED States

State Meaning

Solid Green The signal being transmitted by the local DSX-1 equipment i s

Solid Yellow The NCC 2020 is in a loop which faces the Equipment port

Solid Red A continuous error condition exists (Loss Of Signal, Loss Of

Flashing

Red to Off

Flashing

Red to

Yellow Not Lit The NCC has no po w er o r, if o ther LEDS are lit, the NCC is

OK or the NCC 2020 card is configured for Mux mode (in Mux mode the EQPT LED is

(Repeater Loopback or Equipment Loopback).

Frame, Alarm Indication Signal, Remote Alarm Indication Signal) in the signal (o r lack of a signal) being transmitted by the local DSX-1 equipment.

Bipolar Violations, CRC-6 Errors, or a low density condition have been detected in the local DSX-1 equipment transmit signal.

The NCC is looped toward the equipment (RLB, ELB) and errors are detected in the data stream being transmitted by the equipment.

defective.

always

green).

NOTE:

“Solid Red” events take priority over “Flashing Red” events, except when a loopback is enabled.

5

-6 Verilink NCC 2020 User Manual

Diagnostics

STAT LED

The STAT (CSU status) LED is a tri-color indicator with six states, as follows:

Table 5-4 Stat LED States

State Meaning

Solid Green The NCC has been loaded with the Test Set 2000 test program

Solid

Yellow

Solid Red Some alarm condition has occurred within the last fifteen

Flashing

Red to Off

Flashing

Red to Yellow

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

using AM2000. A test is in progress and no errors are detected (a test signal is

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

minutes on either the Network or Equipment interface. Power-up self-test has failed. Verify that the rear CIM module is

of a correct type (CIM 2020 or CIM 2025). Errors have been received during a test (a test signal is being

transmitted and the pattern received does not match the pattern sent).

the normal state for the Stat LE D.

NET LED

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

Table 5-5 Net LED States

State Meaning

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

Solid

Yellow

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

Flashing

Red to

Green

Flashing

Red to Yellow

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

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

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

network interface.

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

defective.

Verilink NCC 2020 User Manual

5

-7

Diagnostics

Test Procedures

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

Two procedures are described below. First, in the section “Verifying a T1”, a method is described to test a T1 circuit when it is expected that no trouble will be found. Then, in the section “Troubleshooting”, a suggested method for finding T1 problems is detailed.

Verifying a T1

Far End Loop

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

First a loop-up code is sent, then a test pattern is transmitt e d. The data received from the T 1 circuit will be compar ed to the data

which was transmitted. If the data received is identical to the data which was transmitted, the T1 is good and may be placed into service.

To begin the verification, use the Inband Up command on the

Diagnostics Men u.

code in the direction of the far end CSU

Figure 5-3 Sending Loop-up Code.

Local NCC 2020

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

This causes the local CSU to transmit a loop-up

Loop-up code

Far CSU

NOTE:

Sending a Pattern

5

-8 Verilink NCC 2020 User Manual

Begin transmitting a test pattern by using the qrss command. Verify that the pattern received matches the pattern being

transmitted by using the show cntr command.

Whenever the code to a far end CSU, the used later to send the loop-down code. Otherwise the far end CSU will be left in a looped conditio n.

Inband Up

command is used to send a loop-up

Inband Down

command must be

Diagnostics

Figure 5-4 Sending and Receiving Pattern

Test pattern sent

Local NCC 2020 Sends pattern Checks pattern

If the QRSS pattern is receive d with no errors, the Test Error Counter will not increment.

If the Test Error Counter does increment, one of the following applies:

The far end CSU never went into a loopback and therefore the

•

test pattern being transmitted is not being received at all. This would cause the Test Error Counter t o increment at a rapid and steady rate.

The far end CSU did go into a loopback, but the pattern

•

received at the local NCC 2020 does not match the pattern transmitted. In this case the Test Error Counter might increment in uneven amounts at virtually any rate.

Test pattern received

Far CSU

(in Line Loop)

Results

Test Failures

If the test passes, consider doing the same test with a different pattern. Some patterns will fail on a T1 which passes other test patterns. See Table 5-2 for details on the various patterns.

If the test fails consider one of these alternatives:

Use a loopback closer to the local CSU. The telephone carrier

•

may be able to put up loopbacks at various locations along the path of the T1 circuit . Start far away and work your way back to the local CSU.

If it appears that the local CSU is defective, try using a

•

repeater loopback. Send a test pattern while the local CSU is in repeater loopback. The test pattern never leaves the CSU because it is receiving what it is sending. If this test passes, the CSU is probably OK.

If a problem is identified but not resolved by this procedure,

•

go on to the next section, “Troubleshooting”.

Verilink NCC 2020 User Manual

5

-9

Diagnostics

Troubleshooting

Repeater Loopback

When it is known that a problem exists in a T1 network application, a different approach is suggested. In the verification procedure above, the initial test passed data through the entire T1 circuit, including both local and far end CSUs. This was done because no troubles were expected.

With trouble known to exist, begin by establishing what is good. Start with a repeater loopback test in the local CSU.

The repeater loopback test takes the transmit data just as it is about to leave the network po rt of the CSU and feeds it directly into the receive circuitry of the CSU. If the CSU is transmitting bad data, it will now receive bad data and the problem will be located (the CSU). If the CSU is transmitting good data b ut the receive circuitry is defective, the signal received will fail and the CSU will declare an alarm.

Use the “R” command on the repeater loopback. A warning message appears:

Service Affecting, Are you sure ? (Y/N)

Service Affecting, Are you sure ? (Y/N)Service Affecting, Are you sure ? (Y/N)

Press “y” because you are sure. During a repeater loop back test the NET LED on the CSU should be green and the EQPT LED should be amber. The STAT LED will usually turn red because of a transient bit error condition which occurs at the instant the test begins. Ignore the STAT LED when conducting loopback tests on a CSU.

Diagnostics Menu

to initiate a

Tips

If the EQPT LED blin ks am be r to re d du ring a repeater lo opback, errors are being detected in the DSX-1 data presented by the local equipment. Verify cabling and option compatability.

If the NET LED is n ot green dur ing a repe ater loopba ck t est, con tact Verilink Technical Support for assistance.

If the repeater loopback test passes, the CSU is not defective. For troubleshooting tips related to non-CSU problems, see Table

5-6 below:

5

-10 Verilink NCC 2020 User Manual

Table 5-6 Troubleshooting Tips

Trouble Suggestion

Signal loss — verify that a T1 circuit is connected to the network port.

— verify that a proper cabl e is used, T1 circuits uti lize pins 1, 2,4 and 5 when presented in an RJ-45 connector.

— use a straight through cable (1 to 1, 2 to 2, etc.) on the network side of the CSU. Use a crossover cable on the DSX-1 equipment side.

— the smart jack (network termination device) may be in a loopback.

Frame loss — in a new installation, T1 circuits are often patched out at a carrier’s DACS

or switch until completely turned up. In this case a pattern of unframed all ones (AIS) is kept on the T1 as a keep-alive signal. Contact the carrier and request that they “normal up” the circuit.

— the CSU must be optioned for the same type of framing as the T1 carrier is providing. Framing can not be changed arbitrarily by the user. Contact the carrier and verify the type of framing used on the T1.

Diagnostics

CRC errors

and

BPVs

reported on a ne w

installation

CRC errors — ESF T1 circuits offer CRC-6 error checking as a means of detecting

— when a T1 pres ents symptoms of CRC errors a nd BPVs, with no other alarms, it often is traced to problems with wiring inside the customer premise.

— when the smar t jack is a considerable distanc e from the CSU (over 50 feet), there is the risk that the high level (hot) signals in the transmit pair will induce echo into the lower level (long) signals in the receive pair. This condition is called crosstalk and is a

— as telephone carriers move toward a poli cy of hous i ng al l sma rt ja cks in one location within commercial buildings, crosstalk related complaints are becoming more common.

— to prevent crosstalk related issues the transmit pair and the receive pair must be isolated from each other.

— the recommended cable for T1 uses individually shielded, twisted pairs; each pair has shielding around it—the cable therefore has two shields inside it, one for each pair.

— if shielded twisted pair ca ble is not avail able, try to route the transmit pair and the receive pair in different cables as they traverse the building.

— if the transmit and receive pairs must be routed through a multi-pair cable, such as the 25 pair or 50 pair cable s found in large office buildings, select pairs which are not near each other in the cable.

— many smart jacks offer an option “regeneration”. This causes the smart jack to increase the amplitude of the signal received from the network before handing it off to the CSU. Try to get th e carrier to turn on this option.

changes in data which occur on the T1 circuit. — if CRC errors are reported, the errors are occurring at some point

between the two CSUs. Verify in-house wiring as indicated above. — contact the carrier and request they monitor the circuit. Carriers can

monitor a T1 circuit for CRC errors without disrupting user data.

leading cause of T1 problems.

Verilink NCC 2020 User Manual

5

-11

Diagnostics

Trouble Suggestion

Alarm — when a Verilink AS2000 CSU reports “ALARM” in the Craft interface, it is

BPV — a bipolar violation is a sequence of two or more consecutive pulses of the

CSU reports no errors

but

DTE reports errors

receiving a yell o w ala rm (R AIS) on that port. — T1 devices send a yellow alarm to alert the far end device wh en they ar e

in a red alarm condition such as: Loss Of Signal (LOS), Loss Of Frame (LOF), or Alarm Indication Signal (AIS —received all ones keep-alive).

— to resolve a problem with received yellow alarms, find the trouble in the transmit path of the CSU which is receiving the yellow alarm.

same polarity. — if a T1 is designed to support B8ZS, but some portion of the facility is

configured for AMI in error, the AMI portion of the T1 may attempt to “fix” the intentional bipolar violations used to represent 8 or more zeroes on a B8ZS T1.

— this may manifest as BPVs or BPVs with CRC-6 errors. — to verify that a T1 which is intended to be B8ZS is actually configured

properly, test the facility with a pattern of all zeroes. — in some data applications us in g D SU fun ctio ns, a con dition is rep orte d in

which the CSU does not report errors, but the customer Data Terminal Equipment (DTE) does report errors.

— this usually results fr om tra ns mit da ta samp li ng e rro r s at a DSU interface at the opposite end of the circuit from the DTE reporting the errors.

— if a CSU/DSU samples a zero when the DTE actually presented a one, the transmitting CSU creates CRC checksum data based on the improperly sampled bit(s). The data does not change on the T1 facilit y, and the receiving CSU detects no error.

Loopback Plug

— these types of errors are caused by a broken phase relationship between the transmit clock provided by the DSU and the transmit data provided by the DTE.

— if errors of this type are reported, try changing th e ST vs I NV-ST selection for DSU clocking in the DSU at the

— for more information on DTE clocking issues, see the

Manual.

opposite end

of the circuit.

DIU 2130 User

For a completely reliable test of a CSU, make a T1 loopback plug and plug it in to the network port. The CSU will now receive the signals it is sending.

If the CSU is sending a defective signal, it will receive a defective signal and declare an alarm. If the receive circui try is defective, such that it cannot decode a good signal, it will be unable to decode the signal it is transmitting and will declare an alarm. Thus, if a T1 CSU does not declare any alarms wi th a loo pback plu g in li eu of the T1 circuit, the CSU is not defective. This does not rely on any tests built in to the product, thereby producing a higher confidence level in the results of the test.

5

-12 Verilink NCC 2020 User Manual

Diagnostics

With a loopback plug in the n etwor k port , any customer equipment connected to the NCC 2020 (or a data port of any DIU module assigned to the CSU) should see a loopback condition. If the customer equipment can report errors, it should indi cate that no errors are being received.

A T1 loopback plug can be made by taking a male RJ-45 connector and placing two short jumper wires where a cable would normally go. One jumper is placed from pin one to pin five, the other jumper connects pin two to pin four. See Figure 5-5 for a drawing of a T1 loopback plug.

NOTE:

When using a T1 loopback plug it may be necessary to temporarily change the timing selection in the CSU. If the CSU is set to recover network clock, it will be trying to recover a clock it is trying to recover, the clock frequency will drift. For this test, set the CSU clock source to Internal. Remembe r to change it back after the test.

Figure 5-5 T1 Loopback Plug

RJ -45

Connector

1

245

Cable Side

8

RJ-45 plug held with plastic latching tab unseen at bottom

Verilink NCC 2020 User Manual

5

-13

Diagnostics

5

-14 Verilink NCC 2020 User Manual

Index

Numerics

3-6

5-5

5-4

3-5

3-7

3-2 3-1

4-3

4-6

4-7

1 in 8 test

1.544 MHz clock 24 Hour Bursty Errored Seconds 24 hour Errored Seconds 24 Hour Loss Of Frame Count 24 Hour Severel y Errored Seconds 24 Hour Unavailable Seconds 3 in 24 test 458-102119-008 458-501788-008 62411 64K per DS0 96 fifteen minute intervals

A

1-1

5-3

3-9

3-5

5-1

3-6

3-8

3-6

1-1

A, D&I NET Access System 2000 ALARM Alarm reporting Alarm Status Alarm threshold AMI or B8ZS ASCII AT&T 54016

B

3-6

B8ZS balanced clock signal bantam jacks

4-2

BES busy to a PBX

1-3

3-9

3-7

C

3-3

Cable length option canned config Canned configuration

1-3

CIM

1-4

1-4 1-4

5-4

5-11

5-4 3-7

3-1

5-3

CIM 2022 CIM 2052 CIMs clear cntr Configuration configuration Connecting Terminal Craft Cable Craft Interface CRC ERRORS CRC-6 error checking crosstalk CSU loops CSU Mode

3-7

3-1

3-3

3-1

,

3-8

3-6

3-7, 3-16

2-1

5-11

D

D&I NET data bus A data bus B

3-7

4-4

4-5

3-10

3-13

3-6

3-7

3-17

3-7

3-14

5-1

3-2

5-2

5-12

3-6

3-7

5-4

3-7, 3-9

data bus C date DB-9 Craft Cable density enforcement derives transmit clock Diagnostic Commands Diagnostics Diagnostics Menu direct distance DIU 2140 diu bus diu clock download

Firmware upgrades 3-1

Drop And Insert Mode DTE reports errors

E

4-2

1-3

3-14

5-4

3-7

5-4

5-3

3-7

5-4 5-1

EEPROMS ejector enable loops end tests EQPT LED equipment loopback ES Establish a loopback EXT 422 EXT CLK LOSS EXT TTL external clock

F

3-5

5-4

3-3

1-3

5-3

5-8

3-8

5-6

5-13

far element Far End Loop far end polling

3-8

FDL FOREVER format FRAME LOSS framed pattern of all ones framing frequency will drift Front Panel Front Panel LEDs

I

1-2

IDCSU idle code inband down inband up INT clock internal oscillator

3-6

3-7

5-5

3-7

J

Jitter Buffer

3-5

4

5-5

Verilink NCC 2020 User Manual

Index-1

K

keep alive

3-6

L

3-6

lbO least serious LED

blinks amber to red 5-10 EQPT LED 5-6 NET LED 5-7 STAT LED 5-7

Line build out Line loopback

4-2

LOFC log off Logging On

2-2

Login Loopback Plug loop-down code loop-up code loss of all us er data Loss Of Frame Count LOW DENSITY

3-3

3-2

4-3

5-5

5-3

3-6 5-5

5-12

5-5

4-7

4-2

M

Main Menu Main Menu Commands Management Channel

Attempt 3-13 Interval 3-14 Primary address 3-14 Rate 3-13 Type 3-13 Use 3-13 Wait 3-13

Management Channel Menu Mode modem Modem Configuration Commands Mux mode

2-2

3-7

3-13

3-5, 3-7, 3-8

3-3

3-13

N

1-1

NCM near element network provides a clock network termination device

3-3

node Node Administration Node Administration Menu node id

3-10

3-3

3-9

3-7

3-6

3-10

O

One Hour Network ONE HOUR PERFORMANCE DATA

4-2

P

3-8

5-5

3-14

5-12

3-11

Payload loopback Performance Response Messages phase relationship poll far end Primary add ress privileged password

3-8

prm PULSES

5-3

Q

QRSS test Quick Set-Up

5-4

2-1

4-2

3-13

3-8

R

5-4

5-11

3-5

3-10

4-7

3-7

5-10

3-14

3-16

regenerate CRC regeneration repeater Repeater Loopback Replacing EEPROMs reset alarm reset com ports Reset modem interface Reset Registers reset the test error counter restore csu config

5-4

S

save csu config SCC 2130 select D&I DS0s Sending A Pattern Sending Loop-up Code

4-2

SES shelf/slot shielded twisted pairs show cntr SIGNAL LOSS Signal Loss site name smart jack ST vs INV-ST stat mux Status Messages

1-1

3-3

5-4

5-2

3-10

3-6

3-13

5-3

5-12

3-7

3-9

5-3

5-8

5-11

T

3-7 3-10 5-10

3-3

3-6

5-9

2-1

5-4

3-7

3-5

1-2, 2-2 1-2

5-9

3-1

3-7

5-10

5-12

5-9

5-4

5-11

T1 CSU T1 framing T1 loopback plug T1.403 TAC 2010 TAC 2130 Terminal Terminal Setup Test Error Counter test error counter test fails test passes test time THRU time Tips TIU 2850 Transcode Yellow Alarms Transmit Clock Troubleshooting Troubleshooting Tips

U

4-2

UAS Unavailable Seconds unprivileged password

4-6

3-11

V

Verifying A T1 view alarm buffe r

5-8

3-3

X

x.25 pad

3-13

Y

yellow alar m s YOUR PASSWORD?

3-5

3-2

3-5

5-4

Index-2

Verilink NCC 2020 User Manual

September 1999 P/N 880-503284-001-A1

VERILINK CORPORATION 127 JETPLEX CIRCLE, MADISON, ALABAMA 35758 TEL: (800) 837-4546

Verilink NCC 2020 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Scope

Overview

Related Verilink Documents

Management Options

Types of NCC Node Controllers

Compatible Modules

Components

NCC 2020 Front Panel

Thumbwheel Switches

CIMs for NCC 2020

Port Usage

Quick Set-Up

Connect to Craft Port

Login

CSU Configuration

Configuring the DIU 2130

Configuration

Using the Craft Interface

Craft Port Terminal Setup

Logging On

The Configuration Menu

Configuration Menu Commands

Mode

Node Administration

Node Administration Menu

Table 3-5 Node Administration Commands

Management Channel Menu

Firmware Upgrade Procedures

Replacing EEPROMs

Network Management Programs

Thumbwheel Switches

Thumbwheel Procedure

Thumbwheel Commands

Performance Monitoring

Performance Monitoring Menu

Performance Monitoring Menu Display

One Hour Network

24-hour Errored Seconds

24-Hour Bursty Errored Seconds

24-Hour Severely Errored Seconds

24-Hour Unavailable Seconds

24-Hour Loss of Frame Count

Reset Registers

Using Diagnostics

Diagnostics

Alarm Status

Diagnostics Menu

Status Messages

Diagnostic Commands

Front Panel LEDs

EQPT LED

STAT LED

NET LED

Test Procedures

Verifying a T1

Troubleshooting

Tips

Index