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<div class="moz-cite-prefix"><tt>Hi Michael,<br>
<br>
In SIP, each SIP server does server a certain set of SIP domains
(defined as FQDNs or IPs). Let's assume phone A registers with
proxy A using domainA and </tt><tt><tt>phone B registers with
proxy B using domainB. <br>
To have a call from phone A to phone B, A must dial B@domainB
- so when the call will land on proxy A, proxy A will see
domainB is not locally served and it will forward to proxy B
(responsible for domainB). This is call inter-domain DNS based
routing and it is covered by the OpenSIPS default script.<br>
<br>
</tt>Regards,<br>
</tt>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
On 31.10.2014 13:13, Michael Leung wrote:<br>
</div>
<blockquote
cite="mid:CAJ6sgmgkBmwxhsgX94GSe8mcnfjjWEhEurhAZ=hfHE4Zy4sFSA@mail.gmail.com"
type="cite">
<div dir="ltr">Hi all
<div><br>
</div>
<div>i know this is a stupid question</div>
<div><br>
</div>
<div>but i dont use sip to make a phone call very often , </div>
<div><br>
</div>
<div>i have setup up two opensips server in my intranet
environment</div>
<div><br>
</div>
<div>i use two phones to register on each server </div>
<div><br>
</div>
<div>how to make a phone call from one to another one</div>
<div><br>
</div>
<div>do i have to add the the destination domain name behind the
alias number when i dial out ?</div>
<div><br>
</div>
<div>or why can i dial the alias number without domain name ,
then the opensips server will routing it to a the opensips
server automatically </div>
<div><br>
</div>
<div><br>
</div>
<div>thanks </div>
<div><br>
</div>
<div>Michael</div>
</div>
<br>
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</pre>
</blockquote>
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