[Aaug] Delayed ring

[Christopher Fowler]

I've plugged my ATA into a Linksys 802.11B router.  The router is
plugged into my home network.  So to make a call the ATA needs to go out
of 2 firewalls.  The Linksys and then my Linux routers.

When I call the DID line and dial 301 to get my extension I immediately
go into voice mail.  I get a message that "The person at extension 301
is on the phone".  My ATA does not ring.  About 60(s) later after I've
hung up it rings.  When I answer it I only hear a dial tone.  Trixbox
panel is showing the phone on hook.  Maybe dual firewalls is causing an
issue?