Specifications

MCD Software Overview
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Figure 4: 3300 ICP as Trunking Gateway for PBXs
The IP Networking feature supports G.711 and G.729a encoding. Connections with up to 999
other network nodes are supported. A total of 2000 IP network connections are supported from
any one node and up to 200 connections can be defined between any two nodes.
SIP Trunking
To manage costs within their organizations, many companies opt to replace their traditional
PSTN connections with new SIP services deployed by service providers.
MCD connects to service provider networks using the SIP protocol over the IP network. The
SIP Trunking solution provides many features, such as basic calling features, billing capability,
Emergency Services support, and FAX support.
Mitel operates a SIP center of excellence. The SIP team undertakes interop activity. They use
the SIP protocol to certify integration with SIP service providers for applications that connect
to MCD using SIP and third party SIP devices. Mitel OnLine publishes interop compliance
policies on a monthly basis.
Figure 5: SIP Trunking
Configurable Real-time Transport Protocol (RTP) Packetization
MCD administrators can configure a voice stream packet rate for SIP trunks to their service
providers between 10ms to 80ms (with 10ms increments).