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E. Connectors, Cables, and Pin Assignments
E-8 December 2002 9700-A2-GB20-20
Model 9788 CSU/DSU Data Port Connector
Table E-6, Model 9788 CSU/DSU Data Port Connector, provides the pin
assignments for the 25-position EIA-530-A connector to the DTE.
This does not apply to the router.
Table E-6. Model 9788 CSU/DSU Data Port Connector
Signal
Circuit
Mnemonic
ITU-T
Number Direction Pin
Shield — — — 1
Signal Common AB 102A — 7
Signal Common AC 102B — 23
Transmitted Data BA 103 To CSU/DSU 2 (A)
14 (B)
Received Data BB 104 From CSU/DSU 3 (A)
16 (B)
Request to Send CA 105 To CSU/DSU 4 (A)
19 (B)
Clear to Send CB 106 From CSU/DSU 5 (A)
13 (B)
Received Line Signal Detector CF 109 From CSU/DSU 8 (A)
10 (B)
DCE Ready CC 107 From CSU/DSU 6
DTE Ready CD 108/1, /2 To CSU/DSU 20
Transmit Signal Element
Timing (DTE Source)
DA 113 To CSU/DSU 11 (B)
24 (A)
Transmit Signal Element
Timing (DCE Source)
DB 114 From CSU/DSU 12 (B)
15 (A)
Receiver Signal Element
Timing (DCE Source)
DD 115 From CSU/DSU 17 (A)
9 (B)
Local Loopback LL 141 To CSU/DSU 18
Remote Loopback RL 140 To CSU/DSU 21
Test Mode TM 142 From CSU/DSU 25