Dear Sirs, Could you please tell me the process how to validate or check the correct sip username and password combination. Actually if user enters the wrong sip username and password my iphone app gets crash. I want to check the sip username and password before sending it to general_call_register(), function. Please let me know the procedure how to check the credentials. Thanks a lot in advance. Thanks & Best Regards Laxman Pandey -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20110523/82ba9d77/attachment.html>