Version 6.6 555 October 2014
Installation & Operation Manual 40. General SIP Configuration
Parameter
Name
Type
Provisioning
Type
Description
Enable
Proxy Keep
Alive
Enum
Disable, UsingOptions,
UsingRegister, UsingCRLF
Instant Enables Proxy Keep Alive
Redundancy mode (via keep-alive
messages):
Disable – disable redundancy
UsingOptions – enable
redundancy via OPTIONS
messages
UsingRegister – enable
redundancy via REGISTER
messages
Using CRLF – enable
redundancy using carriage return
and line feed (CRLF) keep-
alives, as per RFC 5626.
If set to UsingOptions, the SIP
OPTIONS message 'Proxy Keep-
Alive Time' is sent every 'Proxy
Keep-Alive Time'. If set to
UsingRegister, the SIP REGISTER
message is sent every 'Registration
Time'. Any response from the Proxy
server, either success (200 OK) or
failure (4xx response), is considered
as if the Proxy server is
communicating correctly.
Notes:
To enable survivability mode for
USER-type IP Groups, set this
parameter to UsingOptions or
UsingRegister
When Proxy redundancy is used,
set this parameter to
UsingOptions
When the active Proxy doesn't
respond to INVITE messages
sent by the gateway, the Proxy is
marked as Offline. This behavior
is similar to the keep-alive
failure.
Proxy Keep
Alive Time
Integer
5-2000000
Instant Defines the Proxy keep-alive time
interval (in seconds) between
OPTIONS messages.
Applicable only when Enable Proxy
Keep Alive is set to UsingOptions.
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