Specifications

System Overview

System Architecture

The 3300 ICP is built upon Mitel’s Data Integrated Voice Applications™ architecture delivering

sophisticated call management, applications and desktop solutions to businesses. Mitel

delivers a highly scalable, resilient, and robust call control that fully utilizes the power of IP

while fully supporting the traditional TDM-based telephony for legacy devices and PSTN

connectivity.

Mitel’s architecture uses the IP network to connect IP telephony devices and provides a

supplementary TDM (time division multiplexing) subsystem to switch calls between traditional

telephone devices (Figure 1). The 3300 ICP has the advantage of being able to optimally switch

both types of traffic, IP or TDM. The 3300 ICP provides native call setup, tear down, and

signalling between Ethernet IP-connected telephones. For traditional telephony, such as POTS

and PSTN trunks, call handling is also handled natively by the 3300 ICP through a conventional

TDM circuit-switched subsystem.

This ability to use two different switching techniques simultaneously means that

• All traffic is switched with minimum conversion between packet and traditional telephony

to provide optimum voice quality in all call scenarios.

• Embedded gateway functionality is required only between the IP and non-IP networks

optimizing the use of system resources.

• Migration from traditional PBX to IP telephony is seamless and efficient.