AudioCodes Mediant 800 MSBG, Руководство пользователя

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SIP User's Manual 450 Document #: LTRT-12804
Mediant 800 MSBG
„ V34ModemTransportType = 2 (Modem bypass)
„ V32ModemTransportType = 2
„ V23ModemTransportType = 2
„ V22ModemTransportType = 2
Configure the following parameters to use bypass mode for V.34 faxes and T.38 for T.30
faxes:
„ FaxTransportMode = 1 (Relay)
„ V34FaxTransportType = 2 (Bypass)
„ V34ModemTransportType = 2 (Modem bypass)
„ V32ModemTransportType = 2
„ V23ModemTransportType = 2
„ V22ModemTransportType = 2
8.3.7.3.2 Relay Mode for T.30 and V.34 Faxes
In this scenario, V.34 fax machines are forced to use their backward compatibility with T.30
faxes and operate in the slower T.30 mode.
Use the following parameters to use T.38 mode for both V.34 and T.30 faxes:
„
FaxTransportMode = 1 (Relay)
„ V34FaxTransportType = 1 (Relay)
„ V34ModemTransportType = 0 (Transparent)
„ V32ModemTransportType = 0
„
V23ModemTransportType = 0
„ V22ModemTransportType = 0
8.3.7.3.3 V.34 Fax Relay for SG3 Fax Machines
Super Group 3 (SG3) is a standard for fax machines that support speeds of up to 33.6
kbps through V.34 half duplex (HD) modulation. This section describes how to configure
the device to support V.34 (SG3) fax relay based on the ITU Specification T.38 version 3.
¾
To enable the device to support V.34 fax relay (T.38) at SG3 speed:
1. Define an IP Profile with the Fax Signaling Method (IsFaxUsed ini file) parameter set
to T.38 Relay (1).
2. Select the codec used by the device to G.729 (or any other supported codec). This is
done in the Coders Table page (see ''Configuring Coders'' on page
139 ).
3. On the Fax/Modem/CID Settings page (see ''Configuring Fax/Modem/CID Settings'' on
page
105 ), configure the following:
•
Set the T38 Version (SIPT38Version ini file) parameter to T.38 version 3.
•
Set the Fax Relay Max Rate Fax (RelayMaxRate ini file) parameter to 33,600bps
(default).