3Com VCX V7122, Руководство пользователя

Страница: 191 / 488

V7122 Gateway User Guide
191
ini File Field Name
Web Parameter Name
Valid Range and Description
CngDetectorMode
[CNG Detector Mode]
0 = Disable (default). Don’t detect CNG.
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.
2 = Events Only. CNG is detected on the originating side. The CNG signal
passes transparently to the remote side and fax session is started.
Usually T.38 fax session starts when the ‘preamble’ signal is detected by
the answering side. Some SIP gateways do not support the detection of
this fax signal on the answering side, thus, 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), and the like.
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
Appendix H: 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 each time this
timer expires. The SIP method used for session-timer updates is
determined according to the parameter SessionExpiresMethod.
The default is 0 (not activated).
SessionExpiresMethod
[Session Expires Method]
Defines the SIP method used for session-timer updates.
0 = Use Re-INVITE messages for
session-timer updates (default)
.
1 = Use UPDATE messages.
The gateway can receive session-timer refreshes using both
methods.
The UPDATE message used for session-timer purposes is not
included in the SDP body.
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.