Zhone 3920Plus Manuel utilisateur

3920-A2-GK47-10 February 2002

COMSPHERE 3920Plus Modems

Model Number 3920-A2-xxx

Installation Instructions

Document Number 3920-A2-GK47-10

February 2002

Overview

The COMSPHERE Model 3920Plus modems are full-feature, high-speed leased modems, providing reliable

asynchronous and synchronous operation over leased or dial-line networks with data rates as high as 33,600 bps.

The COMSPHERE 3920Plus modem is available in several models. This document refers to model numbers in

the 3920-A2 series, which are singleport modems with single-rate power supplies. Modems in the 3920-A1 series

have universal power supplies and are described in the COMSPHERE 3900 Series Modems, Models 3920Plus

and 3921Plus, Installation Instructions, Document No. 3920-A2-GK41.

Through downloading capability, any Model 3920Plus modem is upgradable to the latest firmware, requiring no

new hardware investment or on-site personnel, with little or no downtime. For more information on downloading

capability, refer to the Automatic Firmware Download section in Chapter 3 of the COMSPHERE 392xPlus

Modems, Models 3920Plus and 3921Plus, Technical Reference Manual, Document No. 3920-A2-GH30.

NOTE: Do not download firmware with a release number lower than 4.0 to a Model 3920-A2-xxx modem.

Model 3920Plus modems support a wide range of modulation schemes and offer control using either AT

commands, the diagnostic control panel (DCP) or the optional COMSPHERE 6700 and 6800 Series Network

Management Systems (NMS). The NMS performs extensive monitoring, testing, reporting, and restoral functions

to assist in managing your network.

Model 3920Plus modems are compatible with a number of dialing methods and protocols, such as asynchronous

AT commands, CCITT V.25bis dialing, and the DCP. The DCP allows you to use the Model 3920Plus modem in

a variety of applications and environments while also providing control over modem configuration, dialing, and

diagnostics. The Model 3920Plus modems come with preset factory configurations that are the most often used

modem settings.

This document provides the following information:

•A description of the 3920Plus modem

•A list of equipment supplied with the modem

•A list of customer supplied equipment

•Installation instructions

•A 392xPlus Menu tree

•Important safety instructions

•Regulatory notices

•Government requirements and equipment return information

2February 2002 3920-A2-GK47-10

This document is intended to be used in conjunction with the COMSPHERE 392xPlus Modems, Models 3920Plus

and 3921Plus, Technical Reference Manual, Document No. 3920-A2-GH30. This manual is available online at

www.paradyne.com. Select Library -> Technical Manuals -> Business Class Analog Modems.

Ordering Information

Call your sales representative to order additional product documentation or to verify the correct model number for

your geographic area.

COMSPHERE 3920Plus Modem

The Model 3920Plus singleport modem is a standalone modem (Figure 1) capable of either 4-wire/2-wire

leased-line or dial operation. This modem is controlled using either AT commands or the DCP. The DCP consists

of a liquid crystal display (LCD), three function keys, four directional keys, and a row of 13 LED status

indicators. For a better understanding of DCP operation, refer to Chapter 3, DCP Operation, in the Technical

Reference Manual.

DIAGNOSTIC

CONTROL

PANEL

LCD AND

KEYPAD

STATUS

INDICATORS

POWER

SUPPLY

97-14678-02

POWER

ON/OFF

LEASED

DIAL

DTE 1

NMSPOWER IN

Figure 1. Model 3920Plus Modem (North America Model)

3920-A2-GK47-10 February 2002

392xPlus Modem Package

After opening the modem’s package, check for damage and verify that the following items are present:

•Installation instructions

•Model 3920Plus modem

•Power supply

•One 6-position, 4-wire modular cord (in selected models)

•One 8-position, 8-wire modular cord (in selected models)

If any hardware components are damaged, notify your sales or service representative. Return equipment using the

procedures described in Government Requirements and Equipment Return on page 11.

Customer-Supplied Equipment

The following customer-supplied equipment is required to complete a data communications system using the

Model 3920Plus modem:

•A DTE with available EIA-232-D serial port.

•A standard EIA-232-D cable with a DB-25-P (plug) connector at one end to attach to the modem.

•One or more of the following modular leased or dial network interfaces:

— JM8 for leased-line configurations.

— RJ11C for dial permissive configurations.

— One 8-position, 8-wire modular cord (for leased backup purposes).

Model 3920Plus Modem Installation

Before installing your modem, read the Important Safety Instructions on page 10.

Make sure your installation site is clean and well-ventilated. Allow space around the modem for installing cables

and telephone cords, and make sure the modem is located within reach of the ac power outlet. The distance

between your modem and DTE should be minimized if DTE data rates exceed 19,200 bps. Also, low capacitance

cables may be necessary for speeds greater than 19,200 bps or distances greater than 50 feet.

The back panel of the Model 3920Plus modem (Figure 2) has the following switches and connectors:

•An ON/OFF power switch.

•A cylindrical power receptacle (PWR) for the dc power supply.

•An 8-pin modular keyed jack (LEASED) for 4-wire/2-wire leased lines.

•An 8-pin modular keyed jack (DIAL) for backup lines (2-wire dial or 2-wire leased).

•A 4-pin modular jack (NMS) for the Network Management System connection.

•A 25-pin DB-25-S receptacle for the DTE interface.

4February 2002 3920-A2-GK47-10

Model 3920Plus Input Voltage Requirements

The power supply used with model number 3920-A2-201 is a wall-mount transformer designed for 110 vac.

Additional models are available for other voltages and plug types.

Use only the power supply included with your modem.

Connecting Cables to the Model 3920Plus Modem

Figure 2 illustrates the Model 3920Plus modem cable connections. For pin assignments, refer to Appendix C in

the Technical Reference Manual.

97-14677-01

DB-25-P

CONNECTOR

FOR DATA

TERMINAL

EQUIPMENT

OPERATION

SUB-MINIATURE

4-POSITION

PLUG FOR

NETWORK

MANAGEMENT

SYSTEM

OPERATION

POWER

SUPPLY

6-POSITION PLUG

FOR PERMISSIVE

DIAL NETWORK

OPERATION

8-POSITION

PLUG FOR

LEASED-LINE

NETWORK

OPERATION

OFF

DIAL

LEASED DTE 1 NMS PWR ON

Figure 2. Model 3920Plus Back Panel and Power Supply

3920-A2-GK47-10 February 2002

Data Terminal Equipment Connection

Use the following steps to connect an EIA-232-D cable from the modem to a DTE:

1. Make sure the modem is powered OFF.

2. Connect the DB-25-P (plug) connector on the cable to the DB-25-S (socket) connector (Figure 2) on the

modem’s back panel, labeled DTE 1. Use a small screwdriver to secure the cable to the modem.

NOTE

DTE rates above 19.2 bps require cable lengths less than fifty feet

as specified by the RS232 standard.

Power Supply Connection

Use the following steps to connect the modem to an ac power outlet:

1. Make sure the modem is powered OFF.

2. Insert the power supply’s cylindrical connector into the modem’s back panel dc power receptacle, labeled

PWR (Figure 2).

3. Connect the power module to an ac power outlet.

Leased-Line Network Connection

Use the following steps to connect the leased-line network interface:

1. Insert the 8-position, 8-conductor modular plug into the jack labeled LEASED (Figure 2).

2. Insert the other end of the modular cord into the leased-line network interface.

3. If the Model 3920Plus has a backup line, follow the steps listed in the Dial Backup Connection section.

Dial Network Connection

The telephone company provides the line termination jacks for the permissive service you request. Advance

coordination with the telephone company is suggested when connecting the modem to telephone dial lines

(PSTN).

In the Permissive mode, the modem’s transmit output level is fixed at –9 dBm. The telephone company assumes

that the line loss is 3 dB and no compensation is provided for additional losses. A Permissive mode telephone line

is usually terminated with a USOC RJ11C jack.

6February 2002 3920-A2-GK47-10

Leased Backup Connection

Use the following steps to connect the modem to the 2-wire leased backup network interface:

1. Insert the 8-position, 8-conductor modular plug into the jack labeled DIAL (Figure 2).

2. Insert the other end of the modular cord into the leased-line network interface.

Dial Backup Connection

Use the following steps to connect the modem to the dial network interface:

1. Insert the 6-position, 4-conductor modular plug into the jack labeled DIAL (Figure 2).

2. Insert the other end of the modular cord into the dial network interface.

Network Management System Connection

Use the following steps to connect the modem to the network management system (NMS) interface:

1. Insert the sub-miniature, 4-conductor modular plug of the 3600 Hubbing Device into the jack labeled

NMS (Figure 2). Refer to the 3600 Hubbing Device, Feature Number 3600-F3-300, Installation

Instructions, Document No. 3610-A2-GZ45, for a description of the 3600 Hubbing Device. Installation

for the 3920Plus is the same as for the 3610 DSU.

2. Connect the 3600 Hubbing Device to the network management system (Figure G-5 in Appendix G of the

Technical Reference Manual).

Removing and Replacing the Model 3920Plus Modem

To remove and replace the Model 3920Plus modem, perform the following steps:

1. Make sure the modem is offline. Press the modem’s back panel power switch to OFF.

2. Disconnect the dc power cable from the connector on the back of the modem.

3. Disconnect the leased-line and dial modular cord(s) from the modem’s back panel.

4. Disconnect the DTE interface cable(s) from the modem’s back panel.

If the modem is to be removed for service, return it to the company using the procedures described in

Government Requirements and Equipment Return on page 11.

5. Install the replacement modem as described in the Model 3920Plus Modem Installation section, and

configure it the same way as the modem being replaced.

3920-A2-GK47-10 February 2002

Model 3920Plus Modem Power-Up

Once your modem is properly connected to the power supply, leased and/or dial lines, and the DTE, press the

modem’s back panel power switch to the ON position. The modem begins a power-up self-test, in which all DCP

LEDs light. This test takes several seconds to perform, and verifies the operation of most hardware components

within the modem. If successful, the LCD displays Power on Selftst Passed and continues to the Top-Level

menu screen.

Power On Selftst

Passed

F2 F3

If a failure occurs during the self-test, the LCD displays Power On Selftst Failed for several seconds. The LCD

then displays the Top-Level menu screen with the message Power on Fail appearing on the top line of the LCD.

Although a failure has occurred, the modem will attempt to operate. This allows you to activate a more thorough

self-test using the Test branch. Refer to the Test Branch section in Chapter 3 of the Technical Reference Manual.

Selecting Factory Configuration Options

After the modem passes the power-up self-test, configure it for operation using one of the six factory preset

configurations.

The Model 392xPlus modems have six factory preset templates that contain the most commonly used

configuration options (straps) for Synchronous Leased (Answer or Originate), Asynchronous Leased (Answer or

Originate), Trellis Multipoint (Control or Tributary), Asynchronous Dial, Synchronous Dial, and UNIX Dial

hardware network configurations. Your modem is shipped from the factory with the Synchronous Leased

(Answer) default configuration options stored in memory. If Synchronous Leased (Originate), Asynchronous

Leased (Answer or Originate), Trellis Multipoint (TMp) (Control or Tributary), Async Dial, Sync Dial, or UNIX

Dial is more appropriate for your configuration, then you must change the factory setting using either the

modem’s DCP (as described in the following sections) or the AT command set.

The purpose of having preset configurations is so that you can have a “head start”in getting your modem

operating and reducing the amount of time required to configure your modem. For a better understanding of DCP

operation and factory preset configuration options, refer to Chapter 4, DCP Configuration, in Technical Reference

Manual.

8February 2002 3920-A2-GK47-10

Using the Diagnostic Control Panel (DCP)

The DCP’s liquid crystal display (LCD) consists of two 16-character lines which display modem status, control

functions, and configuration options as well as indicating your location in the Top-Level menu tree.

To change a factory template from the Sync Leased preset configuration using the DCP, perform the following

steps:

1. Press the function key below Configure to select the Configure branch.

The LCD now displays Ld EditArea frm.

2. Press the key until Factory comes into view, then press the F1 key to display the factory preset

configurations.

Factory preset configurations are Sync Leased,Async Leased,TMp (Trellis Multipoint), Async Dial,

Sync Dial, and UNIX Dial. If Sync Leased or Async Leased is selected, you must choose either Answer

or Originate mode. If TMp is selected, you must choose either Control or Trib (Tributary) mode.

3. Press the key until the appropriate factory preset appears on the LCD, and press the corresponding

function key to select your choice. (For certain factory presets you will also need to choose the

appropriate mode.)

4. Choose Function appears and displays the Edit and Save functions.

5. Press the F3 key (Save) to save the new factory preset configuration to one of three configuration areas,

Active (Saved),Customer 1, or Customer 2.

(These three configuration areas are nonvolatile memory locations. Active (Saved) contains the most

recently saved changes to any configuration options. In the event of power loss, the modem retrieves these

configuration options. Customer 1 and Customer 2 are user-defined configuration areas.)

The LCD now displays Sav EditArea to.

6. Press the key until the appropriate configuration area appears on the LCD, then press the

corresponding function key to select your choice. (Saving configuration options to the Active (Saved)

configuration area automatically saves them to the Active (Operating) configuration area.) The LCD

displays Command Complete.

7. The modem is now configured with the selected factory template. Press the key to return to the

Top-Level menu.

Refer to Chapter 4, DCP Configuration, in the Technical Reference Manual, for more information regarding

default factory configuration options.

Menu Tree

The following page provides a graphic representation of the general menu structure of the front panel or SDCP

display. Use the Menu Tree for reference when performing the modem’s various functions.

3920-A2-GK47-10 February 2002

Status Configure PList Control Test SubHS Call_Setup Tlk/Data Security Remote

Does not appear in TMp Control mode.

Does not appear in Remote mode.

(Self Loc_Digital_Loop and Pattern

appear if the secondary channel is

used. Rem_Digital_Loop does not

appear in TMp mode.)

Choose Address

(TMp Control only)

Choose Password

(TMp only)

Secondary Prim

(data blckd

(ExitRem appears

instead of Remote when

using Remote mode)

UNIX_Dial

(Tributary

only)

Sync_Leased

Async_Leased

Choose Mode

Answer Originate

TMp

Choose Mode

Control Trib

Async_Dial

Sync_Dial

Activ

(Operating

Active

(Saved

Customer1

Customer2

Factory

Ld EditArea frm:

Choose Function

Save

Active

(Saved)

Customer1 Customer2

"Status" Displays current status of modem along with

data rate and error control mode.

Dial

Disconnect

Answer

Dial_Standby

Return_to_Dial

Change_Directory

Directory Locations 1  24

(Dial

Backup

only)

Display Clear Change Add Acquire

Active

Delete

Skip

Abort Self

Loc_Analog_Loop

Rem_Digital_Loop

Loc_Digital_Loop

Pattern

(Singleport mode

only)

97-14651-04

Speaker

Reset

Data_Stream

EIA_LEDS

Make_Busy

RemoveMakeBusy

Service_Line

DiscServLine

Download_Code

(DownloadSoftware

VF_Thresh_Update

(3921Plus

only)

Edit StrapGroup

Set_Access_Ctrl Reset_Security

(Admin Password?)

EditPassWdTable

Set_Answer_Sec

Set_Orig_Secur

Set_Admin_PsWd

DTE_Interface

DTE_Dialer

Line_Dialer Leased_Line Test Security

Dial_Line V42/MNP/Buffer Misc

MUX Copy Port1 Port2

Port3

Port4

Rate

Async EIA

(Mux Enabled only)

(Singleport mode

only)

(Singleport mode

only)

(Singleport mode

only)

Not shown when the Digital Bridge configuration option is enabled.

DeviceHS

Identity

DTE

Backup

Options

Record

Major

Minor

Status

Dial

Thresh

Security

Port1

Port2

Port3

Port4

SigQual

RcvLevel

Sig/Noise

NrEchLv

FarEchLv

FarEchDel

EchoFreqOff

Phase Hts

Impul Hts

DropOuts

Retrains

Phas Jtr

NonLnear

FreqOffset

Gain Hts

Ser#

Mod#

FRev

HPt#

FPt#

Country

LSD

DTR

DSR

Ts t

TXD

RXD

RTS

CTS

Line = Pri 4W APL

Line = Pri 2W APL

Line = Bkup 2W APL

Line = Dial Backup

Line = Dial ONLY

Line = No Sync

Display

Clear

Display Clear

Service_Log

Port Select

(Multiport

mode)

SDC

Tx Rx

DTE Rate

Cmp Ratio

Efficiency

V.34

TxRate

RxRate

SymbolRate

TxLevel

AsymRate

10 February 2002 3920-A2-GK47-10

Important Safety Instructions

1. Read and follow all warning notices and instructions marked on the product or included in the manual.

2. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product

and to protect it from overheating, these slots and openings must not be blocked or covered.

3. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on

the power cord.

4. Do not attempt to service this product yourself, as opening or removing covers may expose you to

dangerous high voltage points or other risks. Refer all servicing to qualified service personnel.

5. General purpose cables are provided with this product. Special cables, which may be required by the

regulatory inspection authority for the installation site, are the responsibility of the customer.

6. When installed in the final configuration, the product must comply with the applicable Safety Standards

and regulatory requirements of the country in which it is installed. If necessary, consult with the

appropriate regulatory agencies and inspection authorities to ensure compliance.

7. Input power to this product must be provided by one of the following: (1) a UL Listed, CSA Certified

power source with a Class 2 or Limited Power Source (LPS) output for use in North America, or (2) a

certified power source with a Safety Extra Low Voltage (SELV) output for use in the country of

installation.

In addition, if the equipment is to be used with telecommunications circuits, take the following

precautions:

–Never install telephone wiring during a lightning storm.

–Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.

–Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at

the network interface.

–Use caution when installing or modifying telephone lines.

–Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote

risk of electric shock from lightning.

–Do not use the telephone to report a gas leak in the vicinity of the leak.

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