Fax / Modem Transparent With Events Mode; Fax / Modem Transparent Mode - AudioCodes Mediant 4000 SBC User Manual
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14.2.2.6 Fax / Modem Transparent with Events Mode
In this mode, fax and modem signals are transferred using the current voice coder with the
following automatic adaptations:
Echo Canceller = on (or off for modems)
Echo Canceller Non-Linear Processor Mode = off
Jitter buffering optimizations
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:
a.
Set the 'Fax Transport Mode' parameter to Events Only (FaxTransportMode =
3).
b.
Set the 'V.21 Modem Transport Type' parameter to Events Only
(V21ModemTransportType = 3).
c.
Set the 'V.22 Modem Transport Type' parameter to Events Only
(V22ModemTransportType = 3).
d.
Set the 'V.23 Modem Transport Type' parameter to Events Only
(V23ModemTransportType = 3).
e.
Set the 'V.32 Modem Transport Type' parameter to Events Only
(V32ModemTransportType = 3).
f.
Set the 'V.34 Modem Transport Type' parameter to Events Only
(V34ModemTransportType = 3).
3.
Set the ini file parameter, BellModemTransportType to 3 (transparent with events).
14.2.2.7 Fax / Modem Transparent Mode
In this mode, fax and modem signals are transferred using the current voice coder without
notifications to the user and without automatic adaptations. It's possible to use Profiles (see
''Coders and Profiles'' on page 375) to apply certain adaptations to the channel used for fax
/ modem. For example, to use the coder G.711, to set the jitter buffer optimization factor to
13, and to enable echo cancellation for fax and disable it for modem.
To configure fax / modem transparent 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:
a.
Set the 'Fax Transport Mode' parameter to Disable (FaxTransportMode = 0).
b.
Set the 'V.21 Modem Transport Type' parameter to Disable
(V21ModemTransportType = 0).
c.
Set the 'V.22 Modem Transport Type' parameter to Disable
(V22ModemTransportType = 0).
d.
Set the 'V.23 Modem Transport Type' parameter to Disable
(V23ModemTransportType = 0).
e.
Set the 'V.32 Modem Transport Type' parameter to Disable
(V32ModemTransportType = 0).
Version 7.2
181
14. Media
Mediant 4000 SBC
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