Cisco 8851 Administration Guide

Access port (10/100/1000
PC) connection.
5DC adaptor port
(DC48V).
1
Auxiliary port.6AC-to-DC power supply
(optional).
2
Handset connection.7AC power wall plug
(optional).
3
Analog headset
connection (optional).
8Network port
(10/100/1000 SW)
connection. IEEE 802.3at
power enabled.
4
The Cisco IP Phone 8841 and 8845 does not support a key expansion module.
Note
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
28
About the Cisco IP Phone
Phone Connections

Cisco 8851 Specifications

General

Brand	Cisco
Model	8851
Category	IP Phone
Language	English