I too am having trouble with *500 and *600. When I dial either *500 or *600, the softphone indicates connection, but I get no audio.
I've been using Voxalot for 2+ years, but noticed that my voicemail stopped working reliably about a month ago. I'm using X-Lite with the Basic (free) Voxalot service. My dialplan is the X-Lite default:
#1\a\a.T;match=1;prestrip=2;
I can perform echo tests on other services (
e.g. 1-747-474-3246@sipphone.com) successfully.
Any ideas?