Hello, sorry for dropping in so late but I encountered the same problems so I started playing around with IPTABLES and DNS servers.
For me it looks like asterisk has a problem because it seems to do reverse dns lookups (PTR records). For me the following helped: I installed a local dns recursor. I used the one from powerdns (apt-get install pdns-recursor). Then I put 127.0.0.1 as only nameserver in my /etc/resolv.conf. Next thing I did is telling my dns server to be contain authoritative data for the "in-addr.arpa" zone. I added the following line "auth-zones=in-addr.arpa=/etc/powerdns/zone-in-addr.arpa" to /etc/powerdns/recursor.conf and then created an empty file /etc/powerdns/zone-in-addr.arpa. Now things seem to work without internet. I do not understand why a PBX is such dependent on internet (DNS) connectivity. Maybe someone from the dev list can clear things up. If I disable DNS lookups by some router/iptables magic asterisk cant even do a normal reload. Best regards, Loic Didelot. On Fri, 2008-04-11 at 13:49 -0500, Andres wrote: > Marius Muja wrote: > > > Hello all, > > > > I have the following problem: if there is a temporary loss of Internet > > connectivity, the asterisk server 'hangs' if it has external SIP > > trunks configured. By hanging I mean that any calls between the local > > extensions and any calls to the voicemail extension stop working. > > Everything works fine again when the internet connectivity returns (I > > tested this by removing and reinserting the network cable from the > > cable modem). > > > > My guess is that the asterisk server tries resolving the names of the > > SIP providers when it tries to re-register to them and because there > > is no internet connectivity it hangs there for a while. However in > > that time all the local calls to the asterisk server stop working. > > > > Has anybody else encountered this problem? > > Yes, this is a common issue. A workaround is to use IP Addresses or > enter hostnames manually in /etc/hosts > > Andres > http://www.neuroredes.com > > > > > Thanks! > > > > > >------------------------------------------------------------------------ > > > >_______________________________________________ > >-- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > > >asterisk-users mailing list > >To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users -- Loïc DIDELOT MIXvoip S.a. [EMAIL PROTECTED] http://www.mixvoip.com _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
