Cisco 7800 Series Administration Manual page 19

Cable Specifications
• RJ-9 jack (4-conductor) for handset and headset connection.
• 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
The Cisco IP Phone 7811 does not contain a headset jack.
Note
LAN 1000BaseT connection (on the Cisco IP Phone 7841).
and the LAN 1000BaseT connection (on the Cisco IP Phone 7841).
computer port.
Function
BI_DA+
BI_DA-
BI_DB+
BI_DC+
BI_DC-
BI_DB-
BI_DD+
BI_DD-
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
Cable Specifications
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