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DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
Data Modules
21-37The Digital Terminal Data Module (DTDM)
21
The Digital Terminal
Data Module (DTDM)
Figure 21-10. The Digital Terminal Data Module Mounted on a 7405D Voice Terminal
The DTDM provides a DCE interface to a DTE device that is connected to the
DTDM (see Figure 21-11) and allows the DTE to communicate with the switch
through the voice terminal and its mounting cord. Data calls and voice calls can be
carried on simultaneously, or data calls can be initiated independently of voice
calls. The DTDM and the digital voice terminal integrate data and voice into the
DCP interface with the system digital switch. The voice terminal user can continue
to access all voice features while the module is active on a data call.
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Digital Terminal
7405 Voice Terminal
Data Module (DTDM)