Sip Configuration Parameters; General Sip Parameters - AudioCodes Mediant 600 User 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]
SIP User's Manual
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.
For Analog interfaces: Note that to send a 183 response, you must
also set the parameter ProgressIndicator2IP to 1. If it is equal to 0,
180 Ringing response is sent.
For Digital interfaces: 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.
Digital interfaces: Defines the ISDN message that is sent when the
183 Session Progress message is received for IP-to-Tel calls.
Analog interfaces: Defines the response of the device upon receipt
of a SIP 183 response.
[0] Progress = Digital interfaces: The device sends a
PROGRESS message. Analog interfaces: A 183 response
(without SDP) does not cause the device to play a ringback tone
(default).
[1] Alert = Digital interfaces: The device sends an ALERT
message (upon receipt of a 183 response) instead of an ISDN
PROGRESS message. Analog interfaces: 183 response is
handled by the device as if a 180 Ringing response is received,
and the device plays a ringback tone.
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).
280
Mediant 600 & Mediant 1000
Description
Document #: LTRT-83305