Network And Computer Port Pinouts; Network Port Connector; Computer Port Connector; Cisco Ip Phone 8800 Series Multiplatform Phones Administration Guide - Cisco 8851 Administration Manual

• 3 key expansion modules connectors which is considered as USB connector for Cisco IP Phone 8851
and 8861

Network and Computer Port Pinouts

Although both the network and computer (access) ports are used for network connectivity, they serve different
purposes and have different port pinouts.
• The network port is the 10/100/1000 SW port on the Cisco IP Phone.
• The computer (access) port is the 10/100/1000 PC port on the Cisco IP Phone.

Network Port Connector

The following table describes the network port connector pinouts.
Table 2: Network Port Connector Pinouts
Pin Number
1
2
3
4
5
6
7
8
BI stands for bidirectional, while DA, DB, DC, and DD stand for Data A, Data B, Data C, and Data
Note
D respectively.

Computer Port Connector

The following table describes the computer port connector pinouts.
Table 3: Computer (Access) Port Connector Pinouts
Pin Number
1
Function
BI_DA+
BI_DA-
BI_DB+
BI_DC+
BI_DC-
BI_DB-
BI_DD+
BI_DD-
Function
BI_DB+

Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide

Cable Specifications
11