FYI, Q 2 3 and 4 have been answered thanks to the kind person who sent me a manual.

Still wondering about the other things though, and a new question.

In setting up UCD you can have recordings, the recordings can be CO or SL interfaces. How do you interface to either of these. What are they expecting you to use. If it is a SL port, does it ring the device first to allow the message device to answer and play like an answering machine ?

Why would one choose a CO interface vs a SL interface other than the SL interface can ring until answer (assuming that is what it does)

Thanks