password, so I tried to register using his (my friend) username and password (that was using them from Nimbuz), it did not work. I come back trying to register using my origin username and password (which was working fine just before a while), it did not work. I removed my username and my friend username from the Asterisk and then I created a new username and password (different than all other) and I tried to register from my mobile, also it did not work !!! I start beleive that it is something related to detecting a hacking (maybe Nimbuz does not use a good security), this caused the MAC to be considered as hacked. Please, can someone advise me how to resolve this problem? Where I can find those MACs that need to be removed from block list? What can I do to get out from this problem? Any advise? Regards Bilal -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users --0015175cdab611da300490ee889e Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable <p>From what you explained it seems to me that your mobile provider has blocked your sip communication altogether. Have you tried changing IP address of your asterisk server? If changing IP works, then probably your provider has blocked you sip communication by IP only.<br> </p> <p>Zeeshan A Zakaria</p> <p>--<br> <a href=3D"http://www.ilovetovoip.com">www.ilovetovoip.com</a></p> <p><blockquote type=3D"cite">On 2010-09-23 7:22 AM, "bilal ghayyad" <<a href=3D"mailto:bilmar_gh at yahoo.com">bilmar_gh at yahoo.com</a>> wrote:<br><br>Hi All;<br> <br> I have my friend that use his mobile (Nimbuz) to connect for the Asterisk and his account was working fine. Suddenly it stop working (not able to register).<br> <br>