AudioCodes E-SBC - Fax; Modem Transparent with Events Mode

CHAPTER15 Media
Mediant 1000 Gateway & E-SBC | User's Manual
The Cisco gateway must include the following definition:
modem passthrough nse payload-type 100 codec g711alaw
➢ To configure NSE 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 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).
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