Ip Networking; Compression - Mitel 3300 ICP General Information Manual

3300 ICP General Information Guide
The following analog trunks are supported:
•
Analog CO trunks- These trunks use the loop start (LS) ports on the 3300 Universal ASU or the
loop start/ground start (LS/GS) card in the peripheral cabinet to interface with the system.
•
E&M trunks - these trunks use the E&M trunk card in the peripheral cabinet to interface with the
system. The card can be configured for either 2-wire or 4-wire operation. Type 1 through Type V
circuits are supported.
•
Direct Inward Dial and Tie trunks -These trunks use the DID/Loop Tie trunk card in the peripheral
cabinet to interface with the system.

IP Networking

IP Networking provides an integrated networking solution that allows voice and signaling data to be
transported over the existing LAN/WAN infrastructure between multiple 3300 ICPs. MSDN/DPNSS
features are supported over IP Networking.
Each 3300 ICP supports up to 2000 IP trunks allowing a 'cluster' of up to eighty 3300 ICP systems to
work as a single integrated voice system. Each pair of 3300 ICP systems can be connected by up to
200 IP trunks.
Note: A Mitel Networks 3800 IP Trunking Gateway adjuncts to a SX-2000 or 3200 ICP cannot be
directly connected to a 3300 ICP. To support this configuration the 3300 ICP would also require
an adjunct 3800 IP Gateway.

Compression

The 3300 ICP provides the option of G.729 voice compression. Licenses and additional 3300 DSP
modules can be purchased to enable this feature to a maximum 64 compression channels. This
feature applies compression to a call whose voice path traverses the TDM/analog to IP fabric or vise-
versa, including calls made between TDM/analog devices when call setup is established over an IP
network.
IP phone to IP phone calls also support compression. Compression for this scenario is applied by
DSP resources in the phones and does not require compression licenses.
The compression of a standard call effectively reduces the bandwidth required per call from 64kbps to
approximately 8kbps plus packet overhead.
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