Ip Communication Solution For Group Applications Configuration Example - Cisco 2800 Series Manual

IP Communication Solution for Group
Applications Configuration Example
Contents
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Introduction
This document provides a configuration example in which:
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Introduction, page 1
Prerequisites, page 2
Configure, page 4
Verify, page 19
Troubleshoot, page 42
Related Information, page 43
A small branch office uses both analog and IP phones. The small branch office implementation
addressed in this document requires IP Telephony services and may also use other full-service
branch (FSB) features of Cisco access routers. These features include Cisco Content Engines (CEs),
Voice over IP (VoIP) services and integration with back-end VoIP call control devices. The small
branch office requires a robust and integrated voice-mail solution. The integrated services routers
also support various options for WAN uplink and integrated LAN switching modules.
Land Mobile Radio (LMR) is used by an enterprise for several reasons which include loss
prevention (premise safety and security) and Push–to–Talk (PTT) communication for mobile
workers within range of the radio system. LMR base stations can be connected to an E&M port for
integration with an IP network and can be accessed via VoIP. The LMR feature also allows
connecting walkie-talkies to the radios using multicast.
Multicast is dial-plan enabled so that IP phones and public switched telephone network (PSTN)
phones can dial in to the LMR by using E.164 numbers. Traditionally, the E&M ports were used to
connect to PSTN or Hoot-and-Holler networks. The E&M ports connected to the LMR can be
multicast–to–VoIP enabled. This configuration permits desktop clients and IP-Phone clients on the