Cisco 7800 Series Administration Manual page 27

About the Cisco IP Phone
• RJ-45 jack for the LAN 10/100BaseT connection (on Cisco IP Phones 7811, 7821, and 7861) and the
• RJ-45 jack for a second 10/100BaseT compliant connection (on Cisco IP Phones 7811, 7821, and 7861)
• 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
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
Note
Note The Cisco IP Phone 7811 does not contain a headset jack.
LAN 1000BaseT connection (on the Cisco IP Phone 7841).
and the LAN 1000BaseT connection (on the Cisco IP Phone 7841).
computer port.
BI stands for bidirectional, while DA, DB, DC, and DD stand for Data A, Data B, Data C, and
Data D respectively.
Function
BI_DA+
BI_DA-
BI_DB+
BI_DC+
BI_DC-
BI_DB-
BI_DD+
BI_DD-
Cisco IP Phone 7800 Series Multiplatform Phones Administration Guide
Network and Computer Port Pinouts
13