AudioCodes Mediant 500 E-SBC, User Manual

Page: 885 / 920

User's Manual 54. Configuration Parameters Reference
Version 6.8 885 Mediant 500 E-SBC
Parameter Description
Web: SBC No Answer Timeout
CLI: sbc-no-arelt-timeout
[SBCAlertTimeout]
Defines the timeout (in seconds) for SBC outgoing (outbound IP
routing) SIP INVITE messages. If the called IP party does not
answer the call within this user-defined interval, the device
disconnects the session. The device starts the timeout count
upon receipt of a SIP 180 Ringing response from the called
party. If no other SIP response (for example, 200 OK) is
received thereafter within this timeout, the call is released.
The valid range is 0 to 3600 seconds. the default is 600.
CLI: configure voip/sbc general-
setting/num-of-subscribes
[NumOfSubscribes]
Defines the maximum number of concurrent SIP SUBSCRIBE
sessions permitted on the device.
The valid value is any value between 0 and the maximum
supported SUBSCRIBE sessions. When set to -1, the device
uses the default value. For more information, contact your
AudioCodes sales representative.
Notes:

For this parameter to take effect, a device reset is required.

The maximum number of SUBSCRIBE sessions can be
increased by reducing the maximum number of SBC
channels in the Software License Key. For every reduced
SBC session, the device gains two SUBSCRIBE sessions.
CLI: configure voip/sbc general-
setting/sbc-dialog-subsc-route-
mode
[SBCInDialogSubscribeRouteMo
de]
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 ).
CLI: 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.
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