Buttons And Hardware - Cisco 7821 Administration Manual

4 Network port (10/100/1000 SW) connection.
IEEE 802.3af power enabled.

Buttons and Hardware

1 Handset light strip
Cisco IP Phone 7821, 7841, and 7861 Administration Guide for Cisco Unified Communications Manager 10.0 (SIP)
8 Analog headset connection (optional).
Indicates an incoming call (flashing red) or new voice message (steady
red).
Cisco IP Phone 7841
23