AudioCodes Mediant 4000 SBC User Manual page 367

User's Manual
Parameter
Proxy Keep-Alive
proxy-enable-keep-alive
[ProxySet_EnableProxyKeepA
live]
Proxy Keep-Alive Time
proxy-keep-alive-time
[ProxySet_ProxyKeepAliveTi
me]
Keep-Alive Failure Responses
keepalive-fail-resp
[ProxySet_KeepAliveFailureR
esp]
Success Detection Retries
success-detect-retries
Version 7.2
Enables the device's Proxy Keep-Alive feature, which checks
communication with the proxy server.

[0] Disable (default).

[1] Using OPTIONS = Enables the Proxy Keep-Alive feature
using SIP OPTIONS messages. The device sends an OPTIONS
message every user-defined interval, configured by the 'Proxy
Keep-Alive Time' parameter (in this table). If the device receives a
SIP response code that is configured in the 'Keep-Alive Failure
Responses' parameter (in this table), the device considers the
proxy as down. You can also configure whether to use the
device's IP address or string name ("gateway name") in the
OPTIONS message (see the UseGatewayNameForOptions
parameter).

[2] Using REGISTER = Enables the Proxy Keep-Alive feature
using SIP REGISTER messages. The device sends a REGISTER
message every user-defined interval, configured by the
SBCProxyRegistrationTime parameter. Any SIP response from
the proxy - success (200 OK) or failure (4xx response) - is
considered as if the proxy is "alive". If the proxy does not respond
to INVITE messages sent by the device, the proxy is considered
as down (offline).
Note:

Proxy keep-alive using REGISTER messages (Using REGISTER
option) is applicable only to the Parking redundancy mode
('Redundancy Mode' parameter configured to Parking).

For Survivability mode for User-type IP Groups, you must enable
this Proxy Keep-Alive feature.

If you enable this Proxy Keep-Alive feature and the proxy uses
the TCP/TLS transport type, you can enable CRLF Keep-Alive
feature, using the UsePingPongKeepAlive parameter.

If you enable this Proxy Keep-Alive feature, the device can
operate with multiple proxy servers (addresses) for redundancy
and load balancing (see the 'Proxy Load Balancing Method'
parameter).
Defines the interval (in seconds) between keep-alive messages sent
by the device when the Proxy Keep-Alive feature is enabled (see the
'Proxy Keep-Alive' parameter in this table).
The valid range is 5 to 2,000,000. The default is 60.
Note: The parameter is applicable only if the 'Proxy Keep-Alive'
parameter is set to Using Options.
Defines SIP response codes that if any is received in response to a
keep-alive message using SIP OPTIONS, the device considers the
proxy as down.
Up to three response codes can be configured, where each code is
separated by a comma (e.g., 407,404). By default, no response code
is defined. If no response code is configured, or if response codes
received are not those configured, the proxy is considered "alive".
Note: The SIP 200 response code is not supported for this feature.
Defines the minimum number of consecutive, successful keep-alive
messages that the device sends to an offline proxy, before the
device considers the proxy as being online. The interval between the
367
17. Control Network
Description
Mediant 4000 SBC