SV8300 Failover Timers 1

[nmilot]

I was wondering what everyone else uses for failover timers. Meaning, how long it takes the PBX to enter survival mode during a network outage. Ours are set way too high, it takes 12 minutes for the phones to enter survival mode if our WAN goes down. During this 12 minutes the phones are unusable.

Here are our settings:
CM0B:
80: 600-630 seconds
81: 600-630 seconds
82: 30-60 seconds
83: 0 (to provide)
84: 600 - 630 seconds

I wasn't sure if there was a best practice out there. I didn't want to set it too low in the event that our WAN link was bouncing.

thanks in advance.

 

[belevedere]

30 to 60 seconds is the usual setting (60 - 120 if you have frequent incidents). If your WAN is down that long in today's data world then you have other issues. Keep in mind that the remote site has to reboot to come up in survival mode. That will take a few minutes after the timer.

 

[nmilot]

Thanks for the response. Are you saying that 80, 81, 82, and 84 are all usually set to 30-60 sec? Or just that 82 is usually set to 30-60 sec?

FYI here is our setup: we have a number of 8300's that connect back to a central 8300 via our WAN. During normal operation, all external outbound calls are routed to our central 8300 and go out over a couple of PRI's that are connected to it. If the WAN to a site were to ever go down then we have it set so that external outbound calls should go out a couple of local CO trunks. This is all working great aside from the time it takes for the remote phone systems to roll over to survival mode during a network outage.

 

[belevedere]

Yes, 30 seconds for each should not be a problem.

 

[nmilot]

Thank you.