Hello, I you enter wrong username or password and send registration request you will get 402 or 403 authentication code in your callback method. You can do something in those case. Thanks Ferdous Ahmed ________________________________ From: Laxman Pandey <laxmanpandey88@xxxxxxxxx> To: pjsip at lists.pjsip.org Sent: Wed, May 25, 2011 3:53:26 PM Subject: How to check valid SIP USERNAME and Password in pjsip? Dear Sirs, What function or method should i use to check the correct sip username and password in the pjsip. If user enters the wrong info then my iphone app gets crashed. Please help me out. I did search a lot but not able to solve the issue. Thanks & Best Regards Laxman Pandey -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20110526/24799b10/attachment.html>