Phone Connections
1
DC adaptor port (DC48V) (optional).
2
AC-to-DC power supply (optional).
3
AC power wall plug (optional).
4
Network port (10/100 SW) connection. IEEE
802.3af power enabled.
Cisco IP Phone 7811, 7821, 7841, and 7861 User Guide for Cisco Unified Communications Manager 10.0 (SIP)
6
5
Access port (10/100 PC) connection (optional).
6
Auxiliary port (optional) .
7
Handset connection.
8
Analog headset connection (optional).
Getting Started