I'm trying to develop a TAXI radio dispatch application. Something like this: http://www.motorolasolutions.com/US-EN/Business+Product+and+Services/Dispatc... I have 3 radios (with different private frecuencies) connected to the asterisk with 3 URI interfaces. The basic features of app_rpt and iaxrpt are working OK. Now, the problems... 1) Sometimes i need to talk to 2 or 3 of the radio channels at the same time. With the iaxrpt I can select and talk to only one radio, only one active call. 2) Also, i need to listen to the audio of the 3 calls (base radios), not only the selected call. Sadly, i can't open iaxrpt multiple instances in the same PC... 3) Is there any way i can detect wich taxi is talking to the radio? I'm a programmer, but I'm a newbie in the radio field. It would be great if any of you can sell me some consulting hours to accomplish this project. Thanks in advance John