Mitel MiVOICE BUSINESS, Engineering Manualline

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Network Configuration Specifics
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LINE CIRCUITS AND COS OPTIONS
For software releases prior to Release MCD 5.0 SP2
For correct operation, ports that are used to connect to Fax machines should have the following
COS options enabled:
• Campon Tone Security/FAX Machine (Set to “Yes”)
• Busy Override Security (Set to “Yes”)
• External Trunk Standard Ringback (Set to “Yes”)
• Return Disconnect Tone When Far End Party Clears (Set to “Yes”)
For software Release MCD 5.0 SP2 and greater
For Release MCD 5.0 SP2 a new option called ‘Fax Capable’ has been added in the ‘Class of
Service Options’ form. This new option is located under the ‘Fax’ heading. Another change
introduced in MCD 5.0 SP2 is the renaming of the ‘Campon Tone Security/Fax Machine’ option
to ‘Campon Tone Security’.
For correct operation, ports that are used to connect to Fax machines must have the following
COS option enabled:
• Fax Capable (Set to “Yes”)
In addition to the Fax Capable COS option, the Administrator is advised to set the following
COS options as indicated. If some of these overrides are not set as indicated and a tone is
generated on this port while a Fax transmission is in progress, then the Fax transmission will
likely fail.
• Campon Tone Security (Set to “Yes”)
• Busy Override Security (Set to “Yes”)
• External Trunk Standard Ringback (Set to “Yes”)
• Return Disconnect Tone When Far End Party Clears (Set to “Yes”)
The Administrator should "enable" V.34 Fax Interop at V.17 speeds with SIP Gateways; the
factory default for this is disabled. This setting is a global setting; the setting is applied to all
ports on a system. This setting can be found under "Fax Advanced Settings"; for details see
the
System Administration Tool Help for MiVoice Business.
RESOURCES REQUIRED
• T.38 is a licensable option. Licenses can be purchased in increments of four.
• A maximum of 56 T.38 sessions are supported on a DSP II card.
• At the start of a fax call an echo canceller is used. Once the call switches to T.38 mode,
the echo canceller is placed in by-pass mode but continues to be allocated for the duration
of the call.
Note: V.34 (Super G3) Fax calls are only supported over links that are TDM end to end,
these calls are not supported over IP by T.38 or G.711 pass through.