Fax / Modem Transparent With Events Mode; Fax / Modem Transparent Mode - AudioCodes Mediant 800 User Manual
Gateways & session border controllers
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CHAPTER 15 Media
2.
On the Fax/Modem/CID Settings page, do the following:
●
Set the 'Fax Transport Mode' parameter to Bypass (FaxTransportMode = 2).
●
Set the 'V.21 Modem Transport Type' parameter to Enable Bypass
(V21ModemTransportType = 2).
●
Set the 'V.22 Modem Transport Type' parameter to Enable Bypass
(V22ModemTransportType = 2).
●
Set the 'V.23 Modem Transport Type' parameter to Enable Bypass
(V23ModemTransportType = 2).
●
Set the 'V.32 Modem Transport Type' parameter to Enable Bypass
(V32ModemTransportType = 2).
●
Set the 'V.34 Modem Transport Type' parameter to Enable Bypass
(V34ModemTransportType = 2).
3.
Set the ini file parameter [BellModemTransportType] to [2] (Bypass).
4.
Set the ini file parameter [NSEMode] parameter to [1] (enables NSE).
5.
Set the ini file parameter [NSEPayloadType] parameter to [100].
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:
●
Set the 'Fax Transport Mode' parameter to Events Only (FaxTransportMode = 3).
●
Set the 'V.21 Modem Transport Type' parameter to Events Only
(V21ModemTransportType = 3).
●
Set the 'V.22 Modem Transport Type' parameter to Events Only
(V22ModemTransportType = 3).
●
Set the 'V.23 Modem Transport Type' parameter to Events Only
(V23ModemTransportType = 3).
●
Set the 'V.32 Modem Transport Type' parameter to Events Only
(V32ModemTransportType = 3).
●
Set the 'V.34 Modem Transport Type' parameter to Events Only
(V34ModemTransportType = 3).
3.
Configure the [BellModemTransportType] parameter to [3] (transparent with events).
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
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 apply certain adaptations to the channel used for fax / modem. For
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Mediant 800 Gateway & E-SBC | User's Manual
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