When I try to make a 3 way call on SP1 of my Obi202, after I connect the first party, hit the flash button on my phone, and try to dial the 2nd party, I get a recording saying "No service configured error ..."
Do I have to make changes in my Obi expert config to get 3 way calling to work? My phone service, Voip MS, says that feature is supported with my line.
I previously had Call Waiting turned off and I think that's why in the Expert Config screen, it said MaxSessions was set to 1. I changed it to 2, saved the changes, and tested it. But 3-way calling still does not work.
Anything else I should change in the settings to get 3 way calling to work?