Use the DNS SRV records for the Desk phones. Phones automatically register to the back server. Look into the DNS Srv records. You can specify the priority.

Use the DNS SRV for the phone registration. I use Polycom and Cisco. 

Aastra phones... have bug in the firmware using DNS Srv records.

http://wiki.freeswitch.org/wiki/Enterprise_deployment_DNS_SRV 

On Wed, Jul 11, 2012 at 11:34 AM, Sean Devoy <sdevoy@bizfocused.com> wrote:

Hi All,

 

I have a question concerning FS failover for high availability. My SIP provider offers the ability to route to a second server if the primary is down.  That is simple enough, but what about the phones?  The desktop devices are not registered with the back FS server.

 

The only idea I have so far would be to change the DNS addresses to the backup upon failure, but that can take a long time to propagate to the phones. 

 

How do other people handle this issue?

 

Thanks,

Sean


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