Cisco 7821, Руководство администратора

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The Cisco IP Phone 7811 does not contain a headset jack. Note
• RJ-45 jack for the LAN 10/100BaseT connection (on Cisco IP Phones 7811, 7821, and 7861) and the
LAN 1000BaseT connection (on the Cisco IP Phone 7841).
• 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 2: 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
Cisco IP Phone 7800 Series Multiplatform Phones Administration Guide
13
About the Cisco IP Phone
Network and Computer Port Pinouts