Thu May 2 11:24:16 EDT 2013

ipkall.com + pbxes.org

I've disabled direct SIP in at home to avoid the countless SIP
attacks.  It seems not straightforward to deal with this in asterisk,
as it needs some kind of firewall <-> asterisk integration, so now I'm
routing everything through pbxes.org

ipkall, route PSTN number to <pbx-name>-<extension>@pbxes.org
/etc/asterisk/sip.conf :: register:<pbx-name>-<extension>:<pw>@pbxes.org

Next thing to try would be to connect directly to google talk[1],
enabling google voice -> internal asterisk routing.  This to avoid the
harsh ipkall removal approach.

[1] https://wiki.asterisk.org/wiki/display/AST/Calling+using+Google