[Asterisk-Users] How to make/recieve call using asterisk when there is a power failure?

[el Flynn]

TinKoon wrote:
> 
> During a power failure situation, analog pstn lines that connect directly to
> the analog phones will most likely still be able to make and receive calls. 
> 
> However, for the Asterisk implementation, unless you have a huge ups, you
> will not be able to make and receive any call during power failure, since
> there will be no power to the Asterisk server. And since all the incoming
> lines, be it analog lines or T1/E1 are connected to the Asterisk, these
> lines wont be able to function at all.  
> 

<snip>

There's been quite a bit of discussion on this list about failover 
scenarios and how to go about handling them; check the list archives for 
the discussions.

You can also look in the Wiki for some examples:

http://www.voip-info.org/wiki-Asterisk+failover
http://www.voip-info.org/tiki-index.php?page=Failover%20switches
http://www.voip-info.org/tiki-index.php?page=Asterisk%20High%20Availability%20Solutions

If you're talking about a simple installation with a couple of lines you 
could use the DPDT Relay solution, look it up in the list archives. For 
larger installations with mission-critical stuff then you'd want to use 
failover switches.

The Wiki has good resources, look it up there.

Flynn