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C-3
Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
OL-19025-01
Appendix C Technical Specifications
Network and Access Port Pinouts
5
BI_DD-
6
BI_DA-
7
BI_DC+
8
BI_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.
Table C-3
Access Port Connector Pinouts (continued)
Pin Number
Function