Cisco VG200 Using Manual - Page 2

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Cisco VG200 Using Manual
Voice over IP Overview
This section covers the following topics, describing in a general way how VoIP
works and defining the standards supported by the Cisco VG200 used to
implement a VoIP network.
Implementing a VoIP Network
To implement VoIP, you must first establish a working IP network and ensure that
the network is properly tuned to reduce congestion. Voice traffic is more sensitive
to congestion than data traffic, meaning that users will notice more congestion
when using VoIP telephones than when using IP for other purposes. For more
information about configuring IP, refer to the "Configuring IP" chapter in the
Cisco IOS 12.0 Network Protocols Configuration Guide.
You also need to thoroughly understand your company's existing voice network
and dial plan, which is the pattern of dialed numbers that provides access to
different telephony endpoints. You can then begin the process of integrating your
voice and data networks, which should be done cautiously and systematically to
prevent disruption of existing telephone service.
Software Configuration Guide for the Cisco VG200
1-2
Implementing a VoIP Network, page 1-2
•
•
The H.323 Standard, page 1-3
Media Gateway Control Protocol, page 1-5
•
Chapter 1
Using the Cisco Voice Gateway 200
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