Hi Users; i have to implement MWI scenario like this: <IPphone,ATA>--------<openser>------------<Asterisk> my users are registered at openser and voicemail box is configured at asterisk. MWI is send by ASTERISK to OPENSER and then OPENSER to IPPHONE OR ATA. My query is this; Q:let say i got a NOTIFY message from openser to IPPHONE/ATA and my phone changes the tone to a MWI tone, Now if the Telephone adapter got reset by any reason , the MWI tone gets lost ,so HOW CAN I FIX THIS PROBLEM? I mean how openser know that phone got disconnected so that it again send NOTIFY message to IPPHONE or is there any way to send NOTIFY message peridically after a define time stamp. Hope someone would help me Thanks __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com