AudioCodes Mediant 1000B - Page 1235

Version 7.2 1235 Mediant 1000B Gateway & E-SBC
User's Manual 65. Configuration Parameters Reference
Parameter Description
(address) is determined by the device's keep-alive
mechanism for the Proxy Set that was used to
route the initial SUBSCRIBE.
Note: For this feature to be functional, ensure the
following:
 Keep-alive mechanism is enabled for the Proxy
Set ('Proxy Keep-Alive' parameter is set to any
value other than Disable).
 Load-balancing between proxies is disabled
('Proxy Load Balancing Method' p
arameter is set to
Disable
).
configure voip > sbc settings > sbc-max-fwd-
limit
[SBCMaxForwardsLimit]
Defines the Max-Forwards SIP header value. The
Max-Forwards header is used to limit the number of
servers (such as proxies) that can forward the SIP
request. The Max-Forwards value indicates the
remaining number of times this request message is
allowed to be forwarded. This count is decremented
by each server that forwards the request.
The parameter affects the Max-Forwards header in
the received message as follows:
 If the received header’s original value is 0, the
message is not passed on and is rejected.
 If the received header’s original value is less than
the parameter's value, the header’s value is
decremented before being sent on.
 If the received header’s original value is greater
than the parameter's value, the header’s value is
replaced by the user-defined parameter’s value.
The valid value range is 1-70. The default is 10.
SBC Session-Expires
configure voip > sbc settings > sbc-sess-exp-
time
[SBCSessionExpires]
Defines the SBC session refresh timer (in seconds) in
the Session-Expires header of outgoing INVITE
messages.
The valid value range is 90 (according to RFC 4028)
to 86400. The default is 180.
Minimum Session-Expires
configure voip > sbc settings > min-session-
expires
[SBCMinSE]
Defines the minimum amount of time (in seconds)
between session refresh requests in a dialog before
the session is considered timed out. This value is
conveyed in the SIP Min-SE header.
The valid range is 0 (default) to 1,000,000, where 0
means that the device does not limit Session-Expires.
configure voip > sbc settings > sbc-session-
refresh-policy
[SBCSessionRefreshingPolicy]
Defines the SIP user agent responsible for
periodically sending refresh requests for established
sessions (active calls). The session refresh allows SIP
UAs or proxies to determine the status of the SIP
session. When a session expires, the session is
considered terminated by the UAs, regardless of
whether a SIP BYE was sent by one of the UAs.
The SIP Session-Expires header conveys the lifetime
of the session, which is sent in re-INVITE or UPDATE
requests (session refresh requests). The 'refresher='