GAC2570 User Manual
Version 1.0.1.23
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Note:
This option is available when DNS Mode is set to SRV or
NAPTR/SRV only.
DNS SRV Failover Mode
The option will decide which IP is going to be used in sending subsequent
SIP packets (ex: Register refresh requests) after the list of IPs for SIP
server host is resolved with DNS SRV.
•
Default (prefer server with lowest SRV priority):
The device will always prefer to send SIP requests to the available server
having the lowest priority, and in case it’s down it contacts the next one,
but once the server having lowest priority is UP again, the device will switch
over to this one.
•
Saved one until DNS TTL (Stay on responding IP until DNS
timeout):
On this mode, the device will resolve DNS SRV records and tries to send
the request to the server having lowest priority and if it doesn’t respond, it
will move on to the next IP until one of the servers responds, once this
happens the device will keep contacting this responding IP until DNS
timeout (30 minutes) before starting over.
•
Saved one until no response (Stay on responding IP until its
failure):
On this mode, the device will send SIP requests to the last responding IP,
and it doesn’t failover/switchover to the next one until this responding
server is down.
•
Failback follows failback expiration timer:
When selected, the device will send all SIP messages to the current
failover SIP server or Outbound Proxy until the failback timer expire server
is down.
Note:
This option is available when DNS Mode is set to SRV or
NAPTR/SRV only.
Register Before DNS
SRV Fail-over
When this feature is enabled (default), the device will register using the
outbound proxy when the SIP server is failed to get the registration.
Note:
This option is available when DNS Mode is set to SRV or
NAPTR/SRV only.
