AudioCodes MP-124 User Manual page 264

Parameter
Progress Indicator to IP
[ProgressIndicator2IP]
[NumberOfActiveDialogs]
EMS: T38 Use RTP Port
[T38UseRTPPort]
Web/EMS: Default Release Cause
[DefaultReleaseCause]
SIP User's Manual
Description
For Analog (FXS/FXO) interfaces:
[-1] Not Configured (default) = Default values are
used.The default for FXO interfaces is 1; The default for
FXS interfaces is 0.
[0] No PI = For IP-to-Tel calls, the device sends 180
Ringing SIP response to IP after placing a call to a
phone (FXS) or PBX (FXO).
[1] PI = 1, [8] PI = 8: For IP-to-Tel calls, if
EnableEarlyMedia is set to 1, the device sends 183
Session Progress message with SDP immediately after
a call is placed to a phone/PBX. This is used to cut-
through the voice path before the remote party answers
the call, enabling the originating party to listen to
network Call Progress Tones (such as ringback tone or
other network announcements).
Defines the maximum number of active SIP dialogs that are
not call related (i.e., REGISTER and SUBSCRIBE). This
parameter is used to control the Registration / Subscription
rate.
The valid range is 1 to 5. The default value is 5.
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
the parameter T38UseRTPPort to 0.
Defines the default Release Cause (sent to IP) for IP-to-Tel
calls when the device initiates a call release and an explicit
matching cause for this release is not found.
The default release cause is
NO_ROUTE_TO_DESTINATION (3).
Other common values include NO_CIRCUIT_AVAILABLE
(34), DESTINATION_OUT_OF_ORDER (27), etc.
Notes:
The default release cause is described in the Q.931
notation and is translated to corresponding SIP 40x or
50x values (e.g., 3 to SIP 404, and 34 to SIP 503).
For an explanation on mapping PSTN release causes to
SIP responses, refer to Mapping PSTN Release Cause
to SIP Response on page 417.
264
MP-11x & MP-124
Document #: LTRT-65412