one way audio - that was also the problem with the grandstream - 123, wait 13 seconds, get the 'welcome' and touch tones didn't work....

but with 123#, i get welcome within a couple seconds AND the touch tones work.

Guess I have to have Voipo techs add 123 to my calling plan. they did have me reset the grandsteam before I noticed this 13 second delay so they could change the ports... and they couldn't get into it to admin it - the system didn't like the password they thought it was. so I reset it and they reconfigured it during a help session. the call plan / 123 likely got lost in the process? I'll get in touch with them monday.

thanks for all your help!