Hello All I was able to successfully transfer calls in the following Phases. ATA-186>>Asterisk>>Mediatrix 1204 switch>>PSTN ATA-186>>Asterisk>>VOCAL server>>Mediatrix 1204 switch>>PSTN PSTN>>Mediatrix 1204 switch>>Asterisk>>VOCAL Server>>Mediatrix 1204 switch>>PSTN Now I have to implement more features in this setup 1. IVR authentication. 2. User ID. 3. User account. 4. User money account. 5. User Database. Please help me to setup these features. Thanks in advance. Dipak Kumar Paul. _________________________________________________________________ Make fun prints Click here to order. http://www.kodakexpress.co.in Delivery anywhere in India.