[Asterisk-Users] brittle IAX connections ?

[Rich Adamson]

> I have several asterisk 1.2.7.1 servers connected through iax2 and often 
> the local asterisk would no longer see the remote one, even thought the 
> link is high quality and the ping is perfect.
> 
> Is there some issues to take into account about IAX2 connections? 
> 
> Is asterisk's DNS resolution too fragile and should I use raw IP's in my 
> configs?

The DNS resolution is somewhat fragile and/or incomplete as has been 
stated previously on the list. Most notably, if asterisk cannot get dns 
resolution the system basically hangs. The workaround is to establish a 
dns caching server on the * box. Second, asterisk code does not properly 
handle dns records that contain more then one IP address; it uses only 
the first entry found within the dns response.

Using hard coded IP addresses is one way to address the issue if that 
works for you.