[Asterisk-Users] How to best debug SIP registration failure

[Anton Tinchev]

ngrep.
There is some patch for better displaying from iptel, that works grat
George Pajari wrote:

> I am having trouble getting SIP phones to register with Asterisk. I know
> that the phone can register with FWD and I have used tcpdump to see the
> registration packets arrive at the Asterisk server, but nothing goes 
> back.
>
> How should I attack the problem?
>
> What debugging tools exist to try to determine why Asterisk is not
> accepting the registration requests?
>
> I have googled for answers but no one seems to have posted a general
> approach to attacking such problem, or, if they have, I missed it.
>
> g.