Fax and Modem Transparent with Events Mode

In this mode, fax and modem signals are transferred using the current voice coder with the following automatic adaptations:

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Echo Canceller = on (or off for modems)

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Echo Canceller Non-Linear Processor Mode = off

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Jitter buffering optimizations

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To configure fax / modem transparent with events mode:

1.

Open the Gateway General Settings page (Setup menu > Signaling & Media tab > Gateway folder > Gateway General Settings), and then from the 'Fax Signaling Method' drop-down list (IsFaxUsed), select No Fax.

2.

On the Fax/Modem/CID Settings page, do the following:

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Configure the 'Fax Transport Mode' parameter to Events Only [FaxTransportMode = 3].

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Configure the 'V.21 Modem Transport Type' parameter to Events Only [V21ModemTransportType = 3].

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Configure the 'V.22 Modem Transport Type' parameter to Events Only [V22ModemTransportType = 3].

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Configure the 'V.23 Modem Transport Type' parameter to Events Only [V23ModemTransportType = 3].

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Configure the 'V.32 Modem Transport Type' parameter to Events Only [V32ModemTransportType = 3].

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Configure the 'V.34 Modem Transport Type' parameter to Events Only [V34ModemTransportType = 3].

3.

Configure the [BellModemTransportType] parameter to [3] (transparent with events).