SIP User's Manual 422 Document #: LTRT-65415
MediaPack Series
10.12 Gateway and IP-to-IP Parameters
10.12.1 Fax and Modem Parameters
The fax and modem parameters are described in the table below.
Table 10-36: Fax and Modem Parameters
Parameter Description
EMS: T38 Use RTP Port
[T38UseRTPPort]
Defines the port (with relation to RTP port) for sending and
receiving T.38 packets.
[0] = Use the RTP port +2 to send/receive T.38 packets
(default).
[1] = Use the same port as the RTP port to send/receive T.38
packets.
Notes:
For this parameter to take effect, you must reset the device.
When the device is configured to use V.152 to negotiate audio
and T.38 coders, the UDP port published in SDP for RTP and
for T38 must be different. Therefore, set the parameter
T38UseRTPPort to 0.
Web/EMS: T.38 Max Datagram
Size
[T38MaxDatagramSize]
Defines the maximum size of a T.38 datagram that the device
can receive. This value is included in the outgoing SDP when
T.38 is used.
The valid range is 120 to 600. The default value is 238.
Web/EMS: T38 Fax Max Buffer
[T38FaxMaxBufferSize]
Defines the maximum size (in bytes) of the device's T.38 buffer.
This value is included in the outgoing SDP when T.38 is used for
fax relay over IP.
The valid range is 500 to 3000. The default value is 1024.
Web/EMS: Enable Fax Re-
Routing
[EnableFaxReRouting]
Enables or disables re-routing of Tel-to-IP calls that are identified
as fax calls.
[0] Disable = Disabled (default).
[1] Enable = Enabled.
If a CNG tone is detected on the Tel side of a Tel-to-IP call, the
prefix "FAX" is appended to the destination number before
routing and manipulations. A value of "FAX" entered as the
destination number in the 'Tel to IP Routing' is then used to route
the call and the destination number manipulation mechanism is
used to remove the "FAX" prefix, if required.
If the initial INVITE used to establish the voice call (not fax) was
already sent, a CANCEL (if not connected yet) or a BYE (if
already connected) is sent to tear down the voice call.
Notes:
To enable this feature, set the parameter CNGDetectorMode
to 2 and the parameter IsFaxUsed to 1, 2, or 3.
The "FAX" prefix in routing and manipulation tables is case-
sensitive.
To Next Page
Loading...
Need help?
General
