100DCD Module
4-7
100R INA and 100 DCD Modules
Data Port Interface signal descriptions are shown in Table 4-3.
17
RXC-A2
FROM DSU
18
LL2
TO DSU
19
RTS-B2
TO DSU
20
DTR2
TO DSU
21
RL2
TO DSU
22
23
24
TT-A2
TO DSU
25
TM2
FROM DSU
■
V.35, RS449 and X.21 interfaces require an adapter cable.
■
DB25S connector is at the end of the 25-pair connector cable A.
Table 4-4. Data Port Interface Signal Descriptions
Signal
Description
RD-A, RD-B
Receive Data, differential pair, data
transmitted to the DTE.
TXC-A, TXC-B
Transmit Clock, differential pair, DCE sourced
timing reference for TD-A/B.
RXC-A, RXC-B
Receive Clock, differential pair, DCE sourced
timing reference for RD-A/B.
Table 4-3. Data Port 2 Connector Pin Assignments—Continued
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Page 266: ...Flow Control 8 88 Installation SPM Maintenance and Troubleshooting Supplement ...