D-3
Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager  7.1
OL-18913-01
Appendix D      Technical Specifications
  Network and Access Port Pinouts
Access Port Connector
Table D-3 describes the access port connector pinouts.
8BI_DD-
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 D-2 Network Port Connector Pinouts (continued)
Pin Number Function
Table D-3 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.