Thank, I tried the *99# and it WORKS! All the prefix references I saw were for *99 only without the # and it didn't work for me. How did you figure out that you need the *99# ?
Matt, hold on with the replacement receiver. If it works with the *99# then I don't want to replace it.
I'll hold off on the replacement. As mentioned, some VOIP providers need the prefix to let the system know it is sending data, and not making a call. I'm glad that it was figured out, and I hope it continues to work