AudioCodes Mediant 3000 User Manual page 939

User's Manual
Parameter
[SBCInDialogSubscribeRoute
Mode]
[SBCMaxForwardsLimit]
Web: SBC Session-Expires
[SBCSessionExpires]
Web: Minimum Session-Expires
[SBCMinSE]
Web: SBC Session Refreshing
Policy
CLI: configure voip/sbc general-
setting/sbc-session-refresh-
policy
[SBCSessionRefreshingPolic
y]
Version 6.8
Enables the device to route in-dialog, refresh SIP SUBSCRIBE
requests to the "working" (has connectivity) proxy.

[0] = (Default) Disable – the device sends in-dialog, refresh
SUBSCRIBES according to the address in the Contact header
of the 200 OK response received from the proxy to which the
initial SUBSCRIBE was sent (as per the SIP standard).

[1] = Enable – the device routes in-dialog, refresh
SUBSCRIBES to the "working" proxy (regardless of the Contact
header). The "working" proxy (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 ('Enable
Proxy Keep Alive' parameter is set to any value other than
Disable).

Load-balancing between proxies is disabled ('Proxy Load
Balancing Method' parameter is set to Disable).
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.
This 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 this
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.
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.
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.
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=' parameter in the Session-
939
51. Configuration Parameters Reference
Description
Mediant 3000