Configure the phones to rely on DHCP Option 150 or 66 to identify the source of telephony configuration
information, available from a Unified Communications Manager HTTP server. Option 150 or 66 should
contain a single IP address in a system with one Unified Communications Manager HTTP server or two IP
addresses for deployments where there are two HTTP servers within the same cluster.
The phone uses the second address if it fails to contact the primary HTTP server, thus providing redundancy.
To achieve both redundancy and load sharing between the HTTP servers, you can configure Option 150 or
66 to provide the two HTTP server addresses in reverse order for half of the DHCP scopes.
The phone requires using a direct IP address (that is, not relying on a Domain Name System (DNS) service)
for Option 150 or 66 because doing so eliminates dependencies on DNS service availability during the phone
boot and registration process.
From release 1.3(0) onward, you can enable Call Admission Control (CAC) and Traffic Specification (TSPEC)
for call control and voice on the WLAN Controller or Access Point. See the
Webex Wireless Phone 840 and
860 Wireless LAN Deployment Guide
for more information.
Note
Webex Wireless Phone 840 and 860 Deployment Guide
The
Webex Wireless Phone 840 and 860 Wireless LAN Deployment Guide
contains useful information about
the wireless phone in the Wi-Fi environment.
Cisco Unified Communications Manager Requirements
Cisco Unified Communications Manager (Unified Communications Manager) requirements for the Webex
Wireless Phone 840 and 860 include:
• Unified Communications Manager 11.5 or higher
• Installation of both of these Cisco Options Package (COP) files on Unified Communications Manager:
• Device enabler QED installer—Enables Webex Wireless Phone 840 and 860 in Unified
Communications Manager.
• Phone software—Updates software for all Cisco apps.
Device Enabler QED Installer File
The Cisco Unified Communications Manager (Unified Communications Manager) device enabler QED
installer Cisco Options Package (COP) file contains configuration files that are needed to register the phone
and enable features on the phone. You must install the latest device enabler QED installer COP file on the
Unified Communications Manager so that the Webex Wireless Phone 840 and 860 can register to the Unified
Communications Manager and access the phone features. New features may be turned off by default and they
have attributes or settings that you must configure.
Webex Wireless Phone 840 and 860 Administration Guide for Cisco Unified Communications Manager
26
Initial Setup
Webex Wireless Phone 840 and 860 Deployment Guide