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Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.5 (SIP)
OL-20861-01
Appendix C Technical Specifications
Network and Computer Port Pinouts
Computer Port Connector
Table C-3 describes the Computer port connector pinouts.
Table C-3 Computer (Access) Port Connector Pinouts
Pin Number Function
1BI_DB+
2BI_DB-
3BI_DA+
4BI_DD+
5BI_DD-
6BI_DA-
7BI_DC+
8BI_DC-
Note “BI” stands for bi-directional, while DA, DB, DC and DD stand for “Data A”, “Data
B”, “Data C” and “Data D”, respectively.