AT&T DEFINITY 7200 series User Manual
Page 154
7-12
DATA CONNECTIVITY — AN OVERVIEW
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DDS
NETWORK
FACILITIES
MTDM
DSU
DSU
MODEM
SHARING
DEVICE
UP TO 4
SYNCHRONOUS
DATA CHANNELS
TO OFF-PREMISES
EQUIPMENT (NOTE 1)
MTDM
MODEM
MODEM
OFF-PREMISES
EQUIPMENT
3002 TYPE PRIVATE
LINE FACILITIES
MTDM
RS-232C
DCP
MTDM
RS-232C
DCP
MTDM
RS-232C
DCP
•
•
•
•
•
•
•
•
•
•
•
DATA
TERMINALS
AND/OR
HOST
COMPUTER
PORTS
"UP TO 21
SYNCHRONOUS
CHANNELS"
M
U
X
M
U
X
DSU
DSU
DDS
NETWORK
FACILITIES
NOTE:
SYNCHRONOUS-TO-ASYNCHRONOUS ADAPTERS MAY BE ADDED AS REQUIRED.
MTDM
DSU
DTE
DSU
SYSTEM 85,
SYSTEM 75,
OR
GENERIC 1/2
Figure 7-5. Off-Premises Data-Only Extension — Configurations