Version 6.2
449
February 2011
SIP User's Manual
8. IP Telephony Capabilities
•
EnableSilenceCompression
•
EnableEchoCanceller
Note:
This mode can be used for fax, but is not recommended for modem
transmission. Instead, use the modes Bypass (see ''Fax/Modem Bypass
Mode'' on page
) or Transparent with Events (see ''Fax / Modem
Transparent with Events Mode'' on page
) for modem.
8.3.7.2.8 RFC 2833 ANS Report upon Fax/Modem Detection
The device (terminator gateway) sends RFC 2833 ANS/ANSam events upon detection of
fax and/or modem answer tones (i.e., CED tone). This causes the originator to switch to
fax/modem. This parameter is applicable only when the fax or modem transport type is set
to bypass, Transparent-with-Events, V.152 VBD, or G.711 transport. When the device is
located on the originator side, it ignores these RFC 2833 events
Relevant parameters:
IsFaxUsed = 0 or 3
FaxTransportType = 2
FaxModemNTEMode = 1
VxxModemTransportType = 2
8.3.7.3 V.34 Fax Support
V.34 fax machines can transmit data over IP to the remote side using various methods.
The device supports the following modes for transporting V.34 fax data over IP:
Bypass mechanism for V.34 fax transmission (see ''Bypass Mechanism for V.34 Fax
Transmission'' on page
)
T38 Version 0 relay mode, i.e., fallback to T.38 (see ''Relay Mode for T.30 and V.34
Faxes'' on page
Using the
ini
file parameter V34FaxTransportType, you can configure whether to pass V.34
over T38 fax relay, or use Bypass over the High Bit Rate coder (e.g. PCM A-Law).
Note:
The CNG detector is disabled (CNGDetectorMode = 0) in all the subsequent
examples.
8.3.7.3.1 Bypass Mechanism for V.34 Fax Transmission
In this proprietary scenario, the device uses bypass (or NSE) mode to transmit V.34 faxes,
enabling the full utilization of its speed.
Configure the following parameters to use bypass mode for both T.30 and V.34 faxes:
FaxTransportMode = 2 (Bypass)
V34FaxTransportType = 2 (Bypass)
Содержание Mediant 800 MSBG
Страница 2: ......
Страница 366: ...SIP User s Manual 366 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Страница 372: ...SIP User s Manual 372 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Страница 390: ...SIP User s Manual 390 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Страница 404: ...SIP User s Manual 404 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Страница 616: ...SIP User s Manual 616 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Страница 636: ...SIP User s Manual 636 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Страница 652: ...SIP User s Manual 652 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Страница 886: ...SIP User s Manual 886 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Страница 890: ...User s Manual Ver 6 2 www audiocodes com ...