i've seen it done but did not notice the hardware or config. in fact you could see the data rate drop when the analog went off hook

not sure if you've tried this or not or even if will work in the UK. it does work for slow speed transmit only modems for me. i didn't program it. just a copyfax line configVG248 Software version 1.2(1) DSP Firmware 3.6(20x) Here are the setting Port...

you may need ansp (answer supervision) set to yes in your route data block. that would give ring back during call setup

the best on the market is valcom. use the horns with local power so you don't need an amp. they also offer zone interfaces that are a little more diff. to set up but work great

the 81c and 51c have the same os. you need an acd group in the 81 with no members (maxp=1) the ncfw field needs to be the pilot of your cm all stations is the cm interface group need to be cfna to vm. this is done in ld 23. i have a little over 20 ye...