On Mon, May 30, 2011 at 2:44 AM, gincantalupo <[email protected]>wrote:
> Hi, > > it is a known problem, one of the worst. To avoid it: > > - do not use urls, only ip addresses in sip.conf > > or put your urls inside /etc/hosts (is what I do especially sip providers > urls) > > or install a dns-cache on your pbx (maybe the best solution) > > Giorgio > > > Even a dns cache won't help you forever. Once the entry's TTL expires, your cache won't be able to give you an answer until it can contact root servers on the internet. -M
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