Cisco 7800 Series Administrator's Guide

Set Subnet Mask Field
Procedure
Step 1
Set the DHCP Disabled option to Disable.
Step 2
Press Back , scroll to the Subnet Mask option, press Edit, and enter a new subnet mask.
Step 3
Press Validate, and then press Apply to apply the changes or Revert to discard the changes.
Set Default Router Field
Procedure
Step 1
Set the DHCP Enabled option to Disable.
Step 2
Press , scroll to the Subnet Mask option, press Edit, and enter a new subnet mask.
Step 3
Press Validate, and then press Apply to apply the changes or Revert to discard the changes.
Set DNS Server Fields
Procedure
Step 1
Set the DHCP Disabled option to Disable.
Step 2
Press Back , scroll to the Subnet Mask option, press Edit, and enter a new subnet mask.
Step 3
Press Validate, and then press Apply to apply the changes or Revert to discard the changes.
Step 4
If multiple DNS Servers can be configured, repeat Steps 2 and 3 as needed to assign backup DNS servers.
Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager
38
Configure Network Settings

Cisco 7800 Series Specifications

General

Wireless	No
Video Support	No
PoE	Yes, 802.3af/at
Audio Codec Support	G.711, G.722, G.729, iLBC
Network Protocols	SIP, SDP, IPv4, IPv6, UDP, TCP, DNS, TFTP, HTTP, HTTPS, DHCP
Security Features	802.1X, TLS, SRTP
Power Options	PoE
Headset Port	3.5mm
Buttons	Line keys, navigation cluster, softkeys, mute, speakerphone, headset, volume control
Bluetooth	No
Ethernet Switch	Yes, 2-port 10/100/1000
USB Port	Yes, for headset (7875)