AudioCodes Mediant 800B - Page 1127

Version 7.2 1127 Mediant 800B Gateway & E-SBC
User's Manual 72. Configuration Parameters Reference
Parameter Description
EnableEarlyMedia parameter is set to 1.
Note: The parameter is applicable only to digital interfaces.
Session-Expires Time
configure voip > sbc settings
> session-expires-time
[SIPSessionExpires]
Defines the numerical value sent in the Session-Expires header in the
first SIP 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).
Note: The parameter is applicable only to the Gateway application.
Minimum Session-Expires
configure voip > sbc settings
> min-session-expires
[MinSE]
Defines the time (in seconds) in the SIP Min-SE header. The header
defines the minimum time that the user agent refreshes the session.
The valid range is 10 to 100,000. The default is 90.
Note: The parameter is applicable only to the Gateway application.
Session Expires Disconnect
Time
[SessionExpiresDisconnect
Time]
Defines a session expiry timeout.
The new session expiry timeout is calculated by subtracting the
configured value from the original timeout as specified in the Session-
Expires header. However, the new timeout must be greater than or
equal to one-third (1/3) of the Session-Expires value. If the refresher
does not send a refresh request within the new timeout, the device
disconnects the session (i.e., sends a SIP BYE).
For example, if you configure the parameter to 32 seconds and the
Session-Expires value is 180 seconds, the session timeout occurs 148
seconds (i.e., 180 minus 32) after the last session refresh. If the
Session-Expires header value is 90 seconds, the timeout occurs 60
seconds after the last refresh. This is because 90 minus 32 is 58
seconds, which is less than one third of the Session-Expires va
lue (i.e.,
60/3 is 30, and 90 minus 30 is 60).
The valid range is 0 to 32 (in seconds). The default is 32.
Session Expires Method
configure voip > gateway
settings > session-exp-
method
[SessionExpiresMethod]
Defines the SIP method used for session-timer updates.
 [0] Re-INVITE = (Default) Uses re-INVITE messages for session-
timer updates.
 [1] UPDATE = Uses UPDATE messages.
Note:
 The parameter is applicable only to the Gateway application.
 The device can receive session-timer refreshes using both
methods.
 The UPDATE message used for session-timer is excluded from the
SDP body.
[RemoveToTagInFailureRes
ponse]
Determines whether the device removes the ‘to’ header tag from final
SIP failure responses to INVITE transactions.
 [0] = (Default) Do not remove tag.
 [1] = Remove tag.
[EnableRTCPAttribute] Enables the use of the 'rtcp' attribute in the outgoing SDP.
 [0] = Disable (default)
 [1] = Enable
Note: The parameter is applicable only to the Gateway application.
[OPTIONSUserPart] Defines the user part value of the Request-URI for outgoing SIP
OPTIONS requests. If no value is configured, the endpoint number
(analog) or configuration parameter ‘Username’ value (digital) is used.