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V6100 and V7122 User Guide
193
ini File Field Name
Web Parameter Name
Valid Range and Description
T38UseRTPPort Defines that the T.38 packets are sent / received using the same port as
RTP 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.
CngDetectorMode
[CNG Detector Mode]
0 = Don’t detect CNG (default)
2 = Detect CNG on caller side and start fax session (if IsFaxUsed=1)
Usually T.38 fax session starts when the ‘preamble’ signal is detected by
the answering side. Some SIP gateways doesn’t’ support the detection of
this fax signal on the answering side, for these cases it is possible to
configure the gateways to start the T.38 fax session when the CNG tone is
detected by the originating side. However this mode is not recommended.
DefaultReleaseCause
[Default Release Cause]
Default Release Cause (for IP to Tel calls), used when the gateway initiates
a call release, and if an explicit matching cause for this release isn’t found,
a default release cause can be configured. The default release cause is
described in the Q.931 notation, and translated to corresponding SIP
equivalent response value
The default release cause is: NO_ROUTE_TO_DESTINATION (3).
Other common values are: NO_CIRCUIT_AVAILABLE (34) or
DESTINATION_OUT_OF_ORDER (27), etc.
The default release cause is described in the Q.931 notation,
and is translated to corresponding SIP 40x or 50x value. For
example: 404 for 3, 503 for 34 and 502 for 27.
For mapping of SIP to Q.931 and Q.931 to SIP release
causes, see
1
E: Release Reason Mapping .
IPAlertTimeout
[Tel to IP No Answer
Timeout]
Defines the time (in seconds) the gateway waits for a 200 OK response
from the called party (IP side) after sending an INVITE message. If the
timer expires, the call is released.
The valid range is 0 to 3600. The default value is 180.
SipSessionExpires
[Session-Expires Time]
Determines the timeout (in seconds) for keeping a re-INVITE message
alive within a SIP session. The SIP session is refreshed (using INVITE)
each time this timer expires.
The default is 0 (not activated).
MINSE
[Minimum Session-Expires]
Defines the time (in seconds) that is used in the Min-SE header. This
header defines the minimum time that the user agent supports for session
refresh.
The valid range is 10 to 100000. The default value is 90.
SIPMaxRtx
[SIP Maximum Rtx]
Number of UDP transmissions (first transm retransmissions) of SIP
messages.
The range is 1 to 7.
The default value is 7.