Configure Sip-Ua Sip-Server Keepalive Target - Avaya 2330 Reference Manual

[secondary]
[tertiary]
[no]
Example
• AG/configure/sip-ua# sip-server ipv4:10.0.2.254
• AG/configure/sip-ua# sip-server ipv4:10.0.2.255 secondary
• AG/configure/sip-ua# sip-server ipv4:10.0.2.256 tertiary

configure sip-ua sip-server keepalive target

The AG2330 can monitor the state of SIP servers specified under sip-ua sip-server using
a keep-alive mechanism by sending SIP OPTIONS at configurable regular intervals. The
AG2330 monitors the primary, secondary, and tertiary SIP servers. For call routing, the Media
Gateway points to the primary server as the active server, assuming the primary server is up
and reachable. Otherwise, the Media Gateway points to the secondary server as the active
server. If both the primary and secondary servers are down or otherwise unreachable, then
the Media Gateway points to the tertiary server which acts as a proxy standalone server. If the
interface to the tertiary server is down, the active server goes into a fail-safe state and in this
mode no active server is returned to the routing logic. In this case, the routing logic can check
for a matching POTS dial peer. If no POTS dial peer matches, then calls are rejected with a
"503 – Service Unavailable" equivalent response on the PSTN side.
When both the servers are down, prefix-based calls continue to function.
If the bound SIP interface (specified by voice service voip sip bind) goes down, then the
keepalive mechanism is disabled until the link comes up. As soon as the link comes up, then
the keepalive mechanism is reenabled according to the configuration.
You can turn the keepalive OPTIONS messages on or off and indicate to which SIP server
they are sent. You can also configure the transport to be used to send the OPTIONS messages
(UDP is default).
The following options are available for monitoring servers:
• None of the servers is monitored (no keepalive target command is executed).
• Only primary server is monitored (keepalive target command is executed only for
the primary server).
Command Line Reference
Variable
configure sip-ua sip-server keepalive target
Value
Specifies that the SIP server being
configured is a secondary server.
Specifies that the SIP server being
configured is a tertiary server.
Removes the configured network address.
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