Calling from SIP Phone to Radio Locally‏

Hi,
We are trying to establish communication between a radio and a SIP user locally. Both radio and SIP phone are users of an asterisk exchange with no intervention of Allstar, Echolink etc. We have configured our system according to the link
ohnosec.org/pipermail/app_rpt-us … 00788.html
and now we are able to call from radio to the local SIP user. We are trying to do it in the reverse direction i.e. to enable a SIP user to call a radio. Can anyone please help us how can we configure this?

Thanks and Regards
Sarosh and Amber

This is a very specialist question. I suspect you will have a better chance of finding anyone with any knowledge in this area on an amateur radio related forum.

Even on an amateur radio forum, you will get a better response if you provide details of what you have tried, e.g. configuration files used, interconnect wiring, radio hardware, and computer interface hardware, so that the question becomes: what am I still doing wrong?

If this is commercial use of amateur radio technology, please make that clear, up front.