Cisco VG200 Using Manual
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CHAPTER
1-1
Software Configuration Guide for the Cisco VG200
78-10322-02
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Using the Cisco Voice Gateway 200
This chapter describes how to use the Cisco Voice Gateway 200 (VG200) with
Cisco CallManager 3.0 or later. It introduces the Media Gateway Control
Protocol (MGCP) and describes how MGCP supports redundant
Cisco CallManager servers. This chapter then provides an overview of the
configuration required to make this work. This chapter includes the following
topics:
• Voice over IP Overview, page 1-1
• Using the Cisco VG200 with Cisco CallManager, page 1-6
• Using the Cisco VG200 with MGCP, page 1-7
• Using a Cisco VG200 Gateway with H.323, page 1-8
• Where to Go Next, page 1-14
Voice over IP Overview
Voice over IP (VoIP) enables your gateway to carry live voice traffic (for example,
telephone calls and faxes) over an IP network. VoIP can consolidate voice and
data traffic for more efficient use of bandwidth, reduce toll charges, and enable
alternatives to expensive and proprietary PBX systems.
The Cisco VG200 is an important component of a VoIP solution, providing a
simple and inexpensive interface between an Ethernet data network and the Public
Switched Telephone Network (PSTN).