•
RJ-45 jack for a second 10/100BaseT compliant connection (on Cisco IP Phones 7811, 7821, and 7861)
and the LAN 1000BaseT connection (on the Cisco IP Phone 7841).
•
48-volt power connector.
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 SW port; the Cisco IP Phone 7841 has a 10/100/1000 SW network port.
•
The computer (access) port is the 10/100 PC port; the Cisco IP Phone 7841 has a 10/100/1000 PC
computer port.
Network Port Connector
The following table describes the network port connector pinouts.
Table 5: Network Port Connector Pinouts
Function
Pin Number
BI_DA+
1
BI_DA-
2
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.
Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager
7
Network and Computer Port Pinouts
