accouting stop message disconnects the user after 2 mins.

Sir, I am facing a very unique problem with PDSN when a user gets connected with CDMA Broadband connection our PDSN sends a accounting stop message to vendor AAA server and disconnects the user just after 2 mins of connection. If you require me to send you the logs and any help will be highly appreciated. Thanks Muffadal _________________________________________________________________ Helping your favorite cause is as easy as instant messaging. You IM, we give. http://im.live.com/Messenger/IM/Home/?source=text_hotmail_join