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Preliminary November 23, 1998
MultiVoice Gateway for the MAX— User’s Guide
Introducing MultiVoice Gateway concepts
MultiVoice applications
MultiVoice applications
MultiVoice supports a variety of applications, including:
•
Basic public long-distance service
•
Local 800 service
•
Point-to-Point Private Branch Exchange (PBX) trunk extensions
•
PBX trunk intraflow
•
PC-to-phone over a VPN
Basic public long-distance service
Basic public long-distance service is the most beneficial to Competitive Local Exchange
Carriers (CLECs) and Internet Service Providers (ISPs) that:
•
Have an existing, extensive IP network
•
Want to offer long-distance services to their customers
The IP network should be a managed infrastructure that maintains Quality of Service (QoS).
Unmanaged IP networks have difficulty with consistent support for the real-time requirements
of transporting voice traffic. Whereas delays due to traffic congestion are usually only an
inconvenience when sending or receiving data traffic, such delays can cause more functional
problems with voice traffic. In maintaining QoS, a network gives voice traffic a higher
transport priority than data traffic, guaranteeing timely delivery of the voice traffic.
For networks which support service precedence, MultiVoice for the MAX provides options for
configuring the Type of Service byte. The VoIP administrator may change the Precedence bits
(bit0 - bit2) and the TOS bits (bit3 - bit6) of the ToS byte contained in the UDP packet header.
This changes the network priority for processing UDP packets by setting user defined values
for delay, throughput and reliability.
