AudioCodes Mediant 3000

User's Manual 400 Document #: LTRT-89730
Mediant 3000
Parameter Description
the control protocol's involvement. To completely disable T.38,
set FaxTransportMode to a value other than 1.
 For more information on fax transport methods, see Fax/Modem
Transport Modes on page 197.
 The corresponding global parameter is IsFaxUsed.
CNG Detector Mode
[IpProfile_CNGmode]
Enables the detection of the fax calling tone (CNG) and defines the
detection method.
 [0] Disable = (Default) The originating fax does not detect CNG;
the device passes the CNG signal transparently to the remote
side.
 [1] Relay = The originating fax detects CNG. The device sends
CNG packets to the remote side according to T.38 (if IsFaxUsed
is set to 1) and the fax session is started. A SIP Re-INVITE
message is not sent and the fax session starts by the
terminating fax. This option is useful, for example, when the
originating fax 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 fax). To also send a
Re-INVITE message upon detection of a fax CNG tone in this
mode, set the parameter FaxCNGMode to 1 or 2.
 [2] Event Only = The originating fax detects CNG and a fax
session is started by the originating fax, using the Re-INVITE
message. Typically, T.38 fax session starts when the preamble
signal is detected by the answering fax. Some SIP devices do
not support the detection of this fax signal on the answering fax
and thus, in these cases, it is possible to configure the device to
start the T.38 fax session when the CNG tone is detected by the
originating fax. However, this mode is not recommended.
Note: The corresponding global parameter is CNGDetectorMode.
Vxx Modem Transport Type
[IpProfile_VxxTransportType]
Defines the modem transport type.
 [-1] = (Not Configured) The settings of the global parameters
are used:

V21ModemTransportType

V22ModemTransportType

V23ModemTransportType

V32ModemTransportType

V34ModemTransportType
 [0] Disable = Transparent.
 [2] Enable Bypass (Default)
 [3] Events Only = Transparent with Events.
For a detailed description of the parameter per modem type, see
the relevant global parameter (listed above).
NSE Mode
[IpProfile_NSEMode]
Enables Cisco's compatible fax and modem bypass mode, Named
Signaling Event (NSE) packets.
 [0] Disable (Default)
 [1] Enable
In NSE bypass mode, the device starts using G.711 A-Law
(default) or G.711 -Law, according to the
FaxModemBypassCoderType parameter. The payload type for
these G.711 coders is a standard one (8 for G.711 A-Law and 0 for
G.711 -Law). The parameters defining payload type for the 'old'