jimtpg

I was just wondering if you had any digital-to-analog (D/A) converters there like are used with some recording equipment. I know of no way to do what you are looking for within the confines of the pbx. Consequently, you will have to switch the audio back and forth between your external audio source, and the telephone itself. The D/A converters that have dry contact closures on them can control the switching, but you would also need power supplies, relays, and various other hardware to make it work. I was just looking for more info on what you had, before delving into the nuts and bolts of actually setting something up.

Jim