[asterisk-users] detect asterisk pbx via sip

[Mindaugas Kuprys]

Use tcpdump to investigate that

Giedrius Augys wrote:
> Hello,
>   My situation is that , I can't make calls with asterisk, but with 
> x-lite works fine. Asterisk shows , that successfully registers with 
> another SIP server, asterisk sends invite, gets trying, and after 30 
> secs asterisk gets 408 Request timeout. And as I said , with x-lite no 
> problems. I heard that for comercial purposes, this SIP server detects 
> asterisk , and ignores him. Or maybe it check is it server or device?
>   Maybe somebody can give me some advices...
> Thanks
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