[asterisk-users] Receiving SIP calls without registeration and dynamic IP address

[Alex Balashov]

Bilal,

The purpose of registration is to establish a contactability/reachability 
URI information in the registrar dynamically.   If you have a static IP on
both ends you can nail up an IP-trusted peer session / SIP trunk.   If 
not, some form of registration will be required.

Registration does not necessarily require a username and password;  in 
fact, it is rarely sent with the registration anyway.  Instead it is
usually sent as a response to a 407 proxy challenge in subsequent
requests, unless the REGISTER message is interrogated with that prior to
being accepted, which depends on how you have the UAS configured.

Other than that, not quite sure what you're asking precisely...

-- Alex

On Thu, 2 Aug 2007, bilal ghayyad wrote:

> Hi List;
>
> How can I configure asterisk to receive a call from
> SIP end point without being registered at asterisk and
> its IP address is dynamic, and authentication to be
> based on the username and password or any other
> string?
>
> I know that if I place the host with static IP then no
> need to register, but what if the voip gateway was
> having dynamic IP and I do not need to register on
> asterisk, but I need to send the call directly and
> asterisk authenticate the device based on the username
> and password or any possible string?
>
> Regards,
> -----------
> ITS
> IP Telephony and Contact Center Engineer
> Eng. Bilal Ghayad
> Mobile: 00965 9849460
>
>
>
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--
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : +1-678-954-0670
Direct : +1-678-954-0671