AudioCodes Mediant 500L MSBR

User's Manual 338 Document #: LTRT-10466
Mediant 500L MSBR
Parameter Description
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.
Web: Vxx Modem Transport Type
CLI: vxx-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 this parameter per modem type,
see the relevant global parameter (listed above).
Web: NSE Mode
CLI: 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' Bypass mode FaxBypassPayloadType and
ModemBypassPayloadType are not used with NSE Bypass.
The bypass packet interval is configured according to the
FaxModemBypassBasicRtpPacketInterval parameter.
The SDP contains the following line:
'a=rtpmap:100 X-NSE/8000'.
Notes:
 When enabled, the following conditions must also be met:

The Cisco gateway must include the following
definition:
'modem passthrough nse payload-type 100 codec
g711alaw'.

Set the Modem transport type to Bypass mode
(VxxModemTransportType is set to 2) for all
modems.

Set the NSEPayloadType parameter to 100.
 The corresponding global parameter is NSEMode.
Web: Play RB Tone to IP
CLI: play-rbt-to-ip
[IpProfile_PlayRBTone2IP]
Enables the device to play a ringback tone to the IP side for
IP-to-Tel calls.
 [0] Disable (Default)
 [1] Enable = Plays a ringback tone after a SIP 183