AudioCodes Mediant 2000 User Manual page 271

SIP User's Manual
Parameter
[HandleReasonHeader]
[EnableSilenceSuppInSDP]
[EnableRport]
Web: Enable X-Channel
Header
EMS: X Channel Header
[XChannelHeader]
Progress Indicator to IP
[ProgressIndicator2IP]
Version 5.8
Determines whether the device uses the value of the incoming SIP
Reason header for Release Reason mapping.

[0] Disregard Reason header in incoming SIP messages.

[1] Use the Reason header value for Release Reason mapping
(default).
Determines the device's behavior upon receipt of SIP Re-INVITE
messages that include the silencesupp:off attribute.

[0] = Disregard the silecesupp attribute (default).

[1] = Handle incoming Re-INVITE messages that include the
silencesupp:off attribute in the SDP as a request to switch to the
Voice-Band-Data (VBD) mode. In addition, the device includes
"a=silencesupp:off" in its SDP offer.
Enables / disables the usage of the 'rport' parameter in the Via
header.

[0] = Enabled.

[1] = Disabled (default).
The device adds an 'rport' parameter to the Via header of each
outgoing SIP message. The first Proxy that receives this message
sets the 'rport' value of the response to the actual port from which
the request was received. This method is used, for example, to
enable the device to identify its port mapping outside a NAT.
If the Via doesn't include 'rport' tag, the destination port of the
response is taken from the host part of the Via header.
If the Via includes 'rport' tag without a port value, the destination port
of the response is the source port of the incoming request.
If the Via includes 'rport' tag with a port value (rport=1001), the
destination port of the response is the port indicated in the 'rport' tag.
Determines whether the x-channel SIP header is added to SIP
messages for providing information on the physical
on which the call is received or placed.

[0] Disable = SIP x-channel header is not used (default).

[1] Enable = SIP x-channel header is generated by the device
and sent in INVITE messages and 180, 183, and 200 OK SIP
responses. The header includes the Trunk number, B-channel,
and the device's IP address.
For example, 'x-channel: DS/DS1-5

'DS/DS-1' is a constant string

'5' is the Trunk number

'8' is the B- channel

'IP=192.168.13.1' is the device's IP address

[-1] Not Configured = for ISDN spans, the progress indicator (PI)
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
271
6. Configuration Parameters Reference
Description
/8;IP=192.168.13.1', where:
Trunk/B- channel
October 2009