[Asterisk-Users] One Ring Mystery

[Eric Wieling]

David Shaw wrote:
> Out of the blue extension 100 will ring once. This will happen 3-4 times
> a day. I have checked the logs and no incoming calls. I have extension
> 100 and 101 going to a SPA-2000 ATA. Any ideas on this??

As far as I can tell that means the phone lost it's connection to 
Asterisk, and then when it gets the connection back it will ring once.