AudioCodes Mediant 800B - Page 1169

Version 7.2 1169 Mediant 800B Gateway & E-SBC
User's Manual 72. Configuration Parameters Reference
Parameter Description
bell-modem-transport-type
[BellModemTransportType]
Determines the Bell modem transport method.
 [0] = Transparent (default)
 [2] = Bypass
 [3] = Transparent with events
Fax CNG Mode
configure voip > media fax-
modem > fax_cng_mode
[FaxCNGMode]
Determines the device's handling of fax relay upon detection of a
fax CNG tone or a V.34/Super G3 V8-CM (Call Menu) signal
from
originating faxes.
 [0] Doesn't send T.38 Re-INVITE = (Default) SIP re-INVITE is
not sent.
 [1] Sends on CNG tone = Sends a SIP re-INVITE with T.38
parameters in SDP to the terminating fax upon detection of a
fax CNG tone, if the CNGDetectorMode parameter is set to 1.
 [2] Sends on CNG or v8-cn = Sends a SIP re-INVITE with
T.38 parameters in SDP to the terminating fax upon detection
of a fax CNG tone (if the CNGDetectorMode parameter is set
to 1) or upon detection of a V8-CM signal.
Note:

 If the parameter is set to [2] and the CNGDetectorMode
parameter is set to [0], the device sends a re-INVITE only if it
detects a V8-CM signal from the originating fax.
 This feature is applicable only if the IsFaxUsed parameter is
set to [1] or [3].
 The device also sends T.38 re-INVITE if the
CNGDetectorMode parameter is set to [2], regardless of the
FaxCNGMode parameter settings.
CNG Detector Mode
configure voip > media fax-
modem > coder
[CNGDetectorMode]
Global parameter that enables the detection of the fax calling
tone (CNG) and defines the detection method. You can also
configure this functionality per specific calls, using IP Profiles
(IpProfile_CNGmode). For a detailed description of the parameter
and for configuring this functionality in the IP Profiles table, see
'Configuring IP Profiles' on page
436.
Note:
If this functionality is configured for a specific IP Profile, the
settings of this global parameter is ignored for calls associated
with the IP Profile.
Fax Detect Timeout Since
Connect
fax-detect-timeout-since-connect
[FaxDetectTimeoutSinceConnect]
Defines a timeout (in msec) for detecting fax from the Tel side
during an established voice call. The interval starts from when the
voice call is established. If the device detects a fax tone within
the interval, it ends the voice session and sends a T.38 or VBD
re-INVITE message to the IP side and processes the fax. If the
interval expires without any received fax event, the device
ignores all subsequent fax events during the voice session.
The valid value is 0 to 120000. The default is 0. If set to 0, the
device can detect fax during the entire voice call.