Specifications

Data Modules
21-64 Issue 11 December 1999
The MPDM can be configured to support the Data Call Setup or Off-Premises
Data-Only Extensions features. In addition to standard data transmission rates
supported by previous versions of the PDM’s (0.3, 1.2, 2.4, 4.8, 9.6, and
19.2 kbps), the MPDM supports data rates of 56 and 64 kbps.
The individual piece parts for the MPDM can be purchased either separately or in
one of the three different preassembled packages described below.
■ AUDIX/CMS MPDM
This MPDM package provides connectivity from either Lucent
Technologies AUDIX
or CMS to the DCIU link of the DEFINITY
Communications System Generic 1, Generic 2, and Generic 3, the
DEFINITY ECS, System 75, and System 85. The AUDIX/CMS MPDM
supports any endpoint that requires low speed (below 19.2 kbps)
synchronous connectivity.
■ The Video Teleconferencing MPDM
This MPDM package allows high speed data endpoints to be switched
through the DEFINITY G1, G2, and G3, the DEFINITY ECS, System 75,
and System 85, to high speed public or private networks. The Video
Teleconferencing MPDM supports an RS-366 Automatic Calling Unit (ACU)
interface to permit dialing through the endpoint (for example, a Video
Teleconference unit or Group 4 FAX machine).
In addition to the RS-366 interface, the Video Teleconferencing MPDM also
uses the ACCUNET
D-Kit which allows transmissions over 56 kbps and 64
kbps facilities such as ACCUNET Switched Digital Service. (ACCUNET
Switched 56 kbps Digital Service is an end-to-end switched digital service
accessed by the switch through a DS-1 interface.)
■ The High Speed Synchronous MPDM
This MPDM package is designed to support high-speed data applications
that do not require the use of an RS-366 ACU interface (for example,
nailed-up or dedicated calls such as Cluster Controller to Front End
Processor). With the addition of an optional interface card, the High Speed
Synchronous MPDM supports connections over switched or private
networks through System 75, System 85, and a DEFINITY G1 and G2.
NOTE:
All three MPDM preassembled packages use the same housing and main
circuit card. The distinguishing components are, therefore, the interface
cards that each uses.