Sip Configuration Parameters; General Sip Parameters; Table 6-29: General Sip Parameters - AudioCodes Mediant 2000 User Manual

SIP User's Manual
6.7

SIP Configuration Parameters

This subsection describes the device's SIP parameters.
6.7.1

General SIP Parameters

The general SIP parameters are described in the table below.
Parameter
Web/EMS: PRACK Mode
[PrackMode]
Web/EMS: Enable Early
Media
[EnableEarlyMedia]
Web: 183 Message Behavior
EMS: SIP 183 Behaviour
[SIP183Behaviour]
Web: Session-Expires Time
EMS: Sip Session Expires
[SIPSessionExpires]
Web: Minimum Session-
Expires
EMS: Minimal Session
Refresh Value
[MinSE]
Version 5.8

Table 6-29: General SIP Parameters

PRACK (Provisional Acknowledgment) mechanism mode for 1xx SIP
reliable responses.

[0] Disable

[1] Supported (default)

[2] Required
Notes:

The Supported and Required headers contain the '100rel' tag.

The device sends PRACK messages if 180/183 responses are
received with '100rel' in the Supported or Required headers.
Enables the device to send a 183 Session Progress response with
SDP (instead of 180 Ringing), allowing the media stream to be
established prior to the answering of the call.

[0] Disable = Early Media is disabled (default).

[1] Enable = Enables Early Media.
Sending a 183 response depends on the Progress Indicator (PI). It is
sent only if PI is set to 1 or 8 in the received Proceeding or Alert PRI
messages. For CAS devices, see the ProgressIndicator2IP
parameter.
Defines the ISDN message that is sent when the 183 Session
Progress message is received for IP-to-Tel calls.

[0] Progress = The device sends a PROGRESS message
(default).

[1] Alert = The device sends an ALERT message (upon receipt of
a 183 response) instead of an ISDN PROGRESS message
Determines the numerical value that is sent in the Session-Expires
header in the first INVITE request or response (if the call is
answered).
The valid range is 1 to 86,400 sec. The default is 0 (i.e., the
Session-Expires header is disabled).
Defines the time (in seconds) that is used in the Min-SE header. This
header defines the minimum time that the user agent refreshes the
session.
The valid range is 10 to 100,000. The default value is 90.
261
6. Configuration Parameters Reference
Description
.
October 2009