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Pin Assignments
D-5
3160-A2-GB21-80
March 1999
AUX Port Interface
The Auxiliary (AUX) port connects to the LAN Adapter for SNMP or Telnet
applications, or to another DSU/CSU’s COM port for daisy chain connectivity.
(The SNMP LAN Adapter includes the cable that is needed to attach it to the
DSU/CSU.) The AUX port connector is an 8-position unkeyed modular connector
for the Model 3160 DSU/CSU (Table D-4) and a DB25-type socket connector for
Model 3164 and 3165 DSU/CSUs (Table D-5).
NOTE:
For daisy-chaining an AUX port to a COM port, an 8-pin-to-8-pin cable
(Model 3160) or 25-pin-to-8-pin cable (Model 3164 or 3165) is required. The
configuration options Com Use and Aux Use must be set to Daisy. Whenever
the cable is connected or disconnected, change the Com Use and Aux Use
configuration options to the correct values.
Table D-4. AUX Port Connector for Model 3160 DSU/CSUs
Signal
Direction Pin Number
DTE Transmit Clock From DSU/CSU 1
DTE Receive Data To DSU/CSU 2
Signal Ground — 3
DTE Transmit Data From DSU/CSU 4
DTE Receive Clock From DSU/CSU 8
Table D-5. AUX Port Connector for Model 3164 and 3165 DSU/CSUs
Signal Direction Pin Number
DTE Transmit Clock From DSU/CSU 15
DTE Receive Data To DSU/CSU 3
Signal Ground — 7
DTE Transmit Data From DSU/CSU 2
DTE Receive Clock From DSU/CSU 17