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DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
Data Modules
21-60The Trunk Data Module (TDM)
21
The Trunk Data Module (TDM)
Figure 21-20. The Trunk Data Module, the Stand-alone Model
The TDM provides an RS-232-C DTE interface for connection to off-premises
private line trunk facilities or a switched network telecommunications network and
a DCP interface for connection to the digital switch.
POWER
TEST IN
CALL IN
TRUNK DATA MODULE
CHECK
OPTIONS
LINE
STATUS
CARRIER
ONPROGRESS
PROGRESS
DATA SET
READY
ORIGINATE
DISCONNECT