Modular Trunk Data Module (Mtdm); Figure 5-6. The Mtdm, The Stand-Alone Model - AT&T Callmaster Series Reference Manual

Trunk Data Module (TDM)

MODULAR TRUNK DATA MODULE (MTDM)

POWER
DATA SET
READY
TEST IN PROGRESS
LINE STATUS
ORIG/
MTDM
DISC
CHECK
OPTIONS
RECEIVE DATA
CALL IN
PROGRESS
SEND DATA
CARRIER ON

FIGURE 5-6. The MTDM, the Stand-alone model

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