I have a successful implementation of openser 0.9.5 and its been working very nicely. I am faced with transferring of calls from pstn to userC by way of userB and I am struggling. path: PSTN=>GW=>SBC=>openser=>uB uB transfers call to uC Call is failing to transfer as "refer" message is not properly handled by my openser script. Any guidance would be appreciated. Transfer works when all legs are from registered clients. Only when the initial call leg is from the PSTN does it not work. Thanks, Rock __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com