User's Manual

General Information Guide - Release 3.1
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System Architecture
The 3300 ICP is built upon Mitel Networks Data Integrated Voice Applications™ architecture. This
approach uses the IP network for connecting IP telephony devices and provides a supplementary
TDM (Time Division Multiplexing) bus for switching calls between traditional telephone devices. Using
this approach all traffic is switched optimally as traffic is connected in it's native format.
The 3300 ICP controller provides call setup, tear down, and signaling between Ethernet IP connected
telephones. For traditional telephony, such as POTS and PSTN trunks, non-IP circuit
communications switching is handled via the conventional TDM circuit-switched bus.
This ability to use two different switching techniques simultaneously means that
• Gateway functionality is only required between the IP and non-IP networks
• All traffic is switched with minimum conversion between packet and traditional telephony to
provide optimum voice quality in all call scenarios.