AudioCodes Mediant 2000 User Manual page 594

Parameter
[V23ModemTransportType]
Web: V.32 Modem Transport
Type
EMS: V32 Transport
[V32ModemTransportType]
Web: V.34 Modem Transport
Type
EMS: V34 Transport
[V34ModemTransportType]
EMS: Bell Transport Type
[BellModemTransportType]
Web/EMS: Fax CNG Mode
[FaxCNGMode]
Web/EMS: CNG Detector
Mode
[CNGDetectorMode]
User's Manual

[2] Enable Bypass (default)

[3] Events Only = Transparent with Events
Note: This parameter can also be configured in an IP Profile.
Determines the V.32 modem transport type.

[0] Disable = Disable (Transparent)

[2] Enable Bypass (default)

[3] Events Only = Transparent with Events
Notes:

This parameter applies only to V.32 and V.32bis modems.

This parameter can also be configured in an IP Profile.
Determines the V.90/V.34 modem transport type.

[0] Disable = Disable (Transparent)

[2] Enable Bypass (default)

[3] Events Only = Transparent with Events
Note: This parameter can also be configured in an IP Profile.
Determines the Bell modem transport method.

[0] = Transparent (default)

[2] = Bypass

[3] = Transparent with events
Determines the device's handling of fax relay upon detection of a
fax CNG tone 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.
Notes:

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.
Determines whether the device detects the fax calling tone (CNG).

[0] Disable = (Default) The originating device doesn't detect
CNG; the CNG signal passes transparently to the remote side.

[1] Relay = CNG is detected on the originating side. CNG
packets are sent to the remote side according to T.38 (if
IsFaxUsed = 1) and the fax session is started. A SIP Re-INVITE
message isn't sent and the fax session starts by the terminating
device. This option is useful, for example, when the originating
device is located behind a firewall that blocks incoming T.38
packets on ports that have not yet received T.38 packets from
the internal network (i.e., originating device). To also send a
Re-INVITE message upon detection of a fax CNG tone in this
mode, set the parameter FaxCNGMode to 1.

[2] Events Only = CNG is detected on the originating side and a
fax session is started by the originating side using the Re-
INVITE message. Usually, T.38 fax session starts when the
'preamble' signal is detected by the answering side. Some SIP
devices don't support the detection of this fax signal on the
594
Description
Document #: LTRT-68822
Mediant 2000