Hi Benny pjsua_buddy_add always returns an error when called in side the callback function on_incoming_subscribe can you check this pls.. Thanks, Joseph -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080904/49bb9d10/attachment.html