Cisco 3905 - Computer Port Connector

FunctionPin number
BI_DB+3
BI_DC+4
BI_DC-5
BI_DB-6
BI_DD+7
BI_DD-8
BI stands for bidirectional, while DA, DB, DC and DD stand for Data A, Data B, Data C and Data
D respectively.
Note
Computer Port Connector
The following table describes the computer port connector pinouts.
Table 24: Computer (Access) Port Connector Pinouts
FunctionPin number
BI_DB+1
BI_DB-2
BI_DA+3
BI_DD+4
BI_DD-5
BI_DA-6
BI_DC+7
BI_DC-8
BI stands for bidirectional, while DA, DB, DC and DD stand for Data A, Data B, Data C and Data
D respectively.
Note
Cisco Unified SIP Phone 3905 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
103
Technical Specifications
Computer Port Connector