AT&T DEFINITY 7200 series - Manual (Page 165)

DTE CONNECTIONS 8-11
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RS-232D
7400A
TIP-RING MODEM
(HAYES AT
COMPATIBLE)
DCP
PBX
TN742
OR
SN243
TN754
OR
SN270
Figure 8-3. External Modem Pool Using Intelligent Modems (Hayes-compatible)
POOLED MODEM CARD
(TN758)
ANALOG
ANALOG
PORTION
DIGITAL
PORTION
SYSTEM 75,
GENERIC 1
7400B,
ADU, ETC
EIA
DM MODEM
C.O. TRUNK
ANALOG
FACILITIES
Figure 8-4. Integrated Modem Pool