LL-14.4 V.33 Leased Line Modem

14,400 bps V.33 synchronous & asynchronous modem

FEATURES
DESCRIPTION
SPECIFICATIONS

General
Indicators (front panel)
Controls
Telco
Data Port
Network Management Port
Front Panel and Network Management Port Commands
Additional Commands in Network Management Port
Physical/Electrical

HOW TO ORDER

FEATURES

4-wire unconditional leased line operation
V.33 and V.29 compatible
Synchronous or asynchronous
LCD display
Network Management pod
Rack mounts in DCB MR-8

The DCB LL 14.4 modem is a full featured V.33 leased line modem with the best price/ benefit ratio in the industry. The LL 14.4 modem operates over four wire unconditioned leased lines at 14,400 bps synchronous or asynchronous. It is an excellent choice for point-to-point applications such as Remote Job Entry (RJE) or statistical multiplexing.

An LCD front panel or the Network Management Port is used to configure the local modem or perform line diagnostics including the V.54 loopbacks. In addition, the Network Management Port can be used to configure the remote modem.

The LCD front panel is used to set-up the following parameters for the local modem:

Modem Rate
RTS Control
Transmit Clock Source
Synchronous or Asynchronous
Receive Level
Transmit Level
Transmit Data Clamp

In addition, the LCD front panel can initiate the following diagnostic tests:

Line Test
Digital Loopback
Analog Loopback
Line Loopback
Remote Line Loopback
Remote Digital Loopback
Send 1004 Hz tone
Remote send 1004 Hz tone

The LCD front panel continuously updates and displays the receive level. This is the most useful information when diagnosing line troubles with the telephone company.

The Network Management Port is accessed through a 9-pin RS-232-D asynchronous port on the rear panel. It can access all of the set-up and diagnostic tests available through the LCD front panel and be used to configure the remote modem and measure the remote receive level.

SPECIFICATIONS

General

Rate: 14,400 bps
Fallback rates: 12000, 9600, 7200 & 4800 bps
Application: Point-to-point
Facility: Four wire leased lines
Mode: Full Duplex
Signaling: CCITT V.33 at 14,400 and 12,000 bps, CCITT V.29 at 9600, 7200 and 4800 bps, Automatic Adaptive Equalization, 2400 baud, QAM modulation, 1700 Hz carrier frequency
Timing: Synchronous or Asynchronous

Indicators (front panel)

Power, Transmit Data, Receive Data, Carrier Detect, and Clear to Send
16 character by 2 line LCD display for configuration and testing

Controls

Front panel push buttons for NEXT, ->, INCR, OK, RESET

Telco

Interface: Four wire lease line
Connector: RJ11-C

Data Port

Interface: RS-232-D, V.24
Connector: D1325 female
Timing: Synchronous or Asynchronous

Network Management Port

Interface: RS-232-D, V.24
Connector: DE-9 female
Timing: Asynchronous

Front Panel and Network Management Port Commands

Rate: 14400, 12000, 9600, 7200 or 4800 bps
Sync/Async
Transmit timing: Internal, External or Slave
Receive level: -26 or -43 dBm
Transmit level: 0 to -15 dBm
RTS control: Forced on or from interface
Transmit Data Clamp: On or off
Test line
Digital loopback
Local analog loopback
Line loopback
Remote line loopback
Remote digital loopback
Send 1004 Hz tone
Remote send 1004 Hz tone

Additional Commands in Network Management Port

Local and remote Show Config
Remote modem Type
Local and remote Set ID
Set Time/Date
Remote Measure Level

Physical/Electrical

Power requirements: 120 VAC, 43 Watts, .36 Amps
10 1/4" x 9 3/4" x 2 1/4"

Rear view of DCB LL 14.4 Modem

APPLICATION

How to Order

PRICING:

LL 14.4

Sync or Async 14.4 Kbps V.33, w/ Network Mgmnt Port

$ 1,195



Data Comm for Business Inc. 2949 County Road 1000 E Dewey, Il 61840	Voice: 217-897-6600 Toll Free: 800-4-DCB-NET Toll Free: 800-432-2638	Email: Contact Page Web: www.dcbnet.com Fax: 217-897-8023
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