AudioCodes Mediant 600 User Manual page 291

SIP User's Manual
Parameter
[NumberOfActiveDialogs]
[TransparentCoderOnDataC
all[
EMS: T38 Use RTP Port
[T38UseRTPPort]
Web/EMS: Default Release
Cause
[DefaultReleaseCause]
Version 5.8
that is received in ISDN Proceeding, Progress, and Alert
messages is used as described in the options below. (default)
[0] No PI = For IP-to-Tel calls, the device sends 180 Ringing SIP
response to IP after receiving ISDN Alert or (for CAS) after
placing a call to PBX/PSTN.
[1] PI =1, [8] PI =8: For IP-to-Tel calls, if EnableEarlyMedia = 1,
the device sends 180 Ringing with SDP in response to an ISDN
Alert or it sends a 183 Session Progress message with SDP in
response to only the first received ISDN Proceeding or Progress
message after a call is placed to PBX/PSTN over the trunk.
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 20. The default value is 20.
[0] = Only use coders from the coder list (default).
[1] = Use transparent coder for data calls (according to RFC
4040).
The 'Transparent' coder can be used on data calls. When the device
receives a Setup message from the ISDN with 'TransferCapabilities
= data', it can initiate a call using the coder 'Transparent' (even if the
coder is not included in the coder list).
The initiated INVITE includes the following SDP attribute:
a=rtpmap:97 CLEARMODE/8000
The default Payload Type is set according to the CoderName table.
If the Transparent coder is not set in the Coders table, the default
value is set to 56. The Payload Type is negotiated with the remote
side, i.e., the selected Payload Type is according to the remote side
selection.
The receiving device must include the 'Transparent' coder in its
coder list.
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
291
6. Configuration Parameters Reference
Description
September 2009