AudioCodes Mediant 8000 - Page 574

Installation & Operation Manual 574 Document # LTRT-92224
Mediant 8000
Parameter
Name
Type
Provisio
ning
Type
Description
Sip
Session
Expires
Integer
0 – 1999999
Instant Defines the numerical value that is
sent in the Session-Expires header
in the first INVITE request or
response (if the call is answered).
Value 0 disables use of the
Session-Expires header.
Minimum
Session-
Expires
(sec)
Integer
10 – 100000
Instant 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.
Session
Expires
Method
Enum
ReInvite, Update
Instant Defines the SIP method used for
session-timer updates.
Notes:
The gateway can receive session-
timer refreshes using both
methods.
The UPDATE message used for
session timer updates lacks the
SDP body.
Prack
Mode
Enum
Disabled, Supported, Required
Instant Defines PRACK (Provisional
Acknowledgment) mechanism
mode for 1xx SIP reliable
responses.
Notes:
The Supported and Required
headers contain the '100rel' tag.
The gateway sends PRACK
messages if 180/183 responses
are received with '100rel' in the
Supported or Required headers.
Sip 183
Behaviour
Enum
Disable, Enable
Instant Defines the ISDN message that is
sent when 183 Session Progress
message is received for IP to Tel
calls.
Disable – progress message
Enable – alert message
Use 180
Response
For Call
Waiting
Enum
Disable, Enable
Instant Defines whether gateway
responds with 180 instead of 182
progress message for Call Waiting.