Filter
Top Products
DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
Data Modules
21-8The 7400B and 7400B Plus Data Module
21
The 7400B and 7400B Plus Data
Module
Figure 21-2. The 7400B Plus Data Module
The 7400B and 7400B Plus Data Modules are full-duplex asynchronous,
Hayes-compatible data modules that provide for simultaneous voice-data
communications at the desk top over standard twisted pair wiring. The 7400B data
module has been discontinued; however, the 7400B Plus data module has all of
the basic characteristics of the 7400B, with the following added benefits:
■ Supports the semicolon dial modifier, which enables an automatic return to
the command mode after dialing a data call
■ Offers a storable S7 register, which supports increased call set-up time
■ Offers the voice dial capability, which provides the ability to dial a voice call
from the PC package in the attached PC
Both of these data modules replace the existing PDM (MPDM) for asynchronous
communication, DTDM, and data stands for 7406D and 7407D voice terminals
(703A DSU and 702AL1) and the 7404D integrated voice/data phone.
NOTE:
If you have a 7400B data module and want to have the voice dial feature,
you can upgrade your current 7400B with a D-kit (Comcode: 106414543)
orderable through the National Parts Sales Center at 1 800 222-PART.
DATA
METERING
POWER
TEST
AA CDRD SD TR OH
DATA
CHECK
SPEED
7400B Data Module