Specifications

General Information Guide
14
Malicious Call Trace
For incoming SIP calls that are tagged as Malicious Calls, MCD records the Media IP address
and port used remotely and captures SIP signalling information. This information cannot be
sent to the SIP Service Provider but is recorded if required.
FAX Support
You can configure the MCD network to allow faxes to be sent over the IP network using G.711
pass-through or IP network using FAX Relay (T.38).
Real-time, Group 3 FAX communication over IP networks using FAX Relay (T.38 standard
protocol) allows you to transmit and receive facsimile over IP trunks between FAX machines
on 3300 ICP (Release 9.0 or later) systems.
Bandwidth Management
One of the key benefits of IP telephony is the opportunity to reduce costs and ongoing
management by eliminating controller hardware at small remote sites. IP phones can readily
be deployed across the WAN (or Internet using the Mitel Border Gateway teleworker service)
hosted by a centralized MCD controller with gateways for remote survivability. When you deploy
remote sites, you must ensure non-voice data has adequate bandwidth and voice quality is
preserved.
If the bandwidth between locations is restricted, you can reduce consumption by applying
compression to voice traffic voice between IP Phones. Compression reduces the bandwidth
demands of a standard voice call (G.711) by compressing the call using the G.729/G.722.1
codec. Compression is applied to calls between the zones of IP Phones (see Bandwidth
Management on page 14 for details).
In addition, Mitel provides a bandwidth management feature that helps IT managers plan and
justify network capacity expansions and perform the following tasks at predetermined zone
access points (ZAPs) between the zones in a network:
• Measure and report consumed and available bandwidth.
• Establish maintenance alarms when bandwidth consumption exceeds configured threshold
levels.
• Provide Call Admission Control (reject new calls through a specific bottleneck point if the
consumed bandwidth exceeds the maximum configured levels).