I'm probably doing something wrong (again). I created a straightforward high altitude IFR flight from KDEN to KSLC - no changes to the plan: All went fine, until the the last leg. I asked Center for the descent to approach, got it - and that was the last I heard from anyone. The Citation merely went across the centre of SLC and then began an overhead orbit. I abandoned it, killed VoxATC, called up MS ATC and then carried out a normal ILS landing. A similar thing happened tonight - DEN - KASE Aspen. All went well, asked for the descent, was cleared to 10 (not good in those hilly things), but went over DBL at 14: she tuned inbound toward the JIDCO intersection, and I went to ILS as it came alive. Landed ok - but without any interaction with approach. I didn't see any options in any of the menus to call approach, and they didn't call me. The aircraft will follow the gps/flight plan all the way to the runway if you let it - but that's not real life. What am I doing wrong??Thanks,

You can say "center, say again" to get the last request repeated and see where the computer left off. You can request a frequency change to utopia radio (make up a frequency) which the program is supposed to allow, then switch back to center and report in to see if it will come back online. If more than I believe 20 miles out you can always recycle VoxATC (disable then enable again) and it will take you into the enroute phase. There are times the program is probably expecting you to cross a certain point and if it misses it it will wait... and wait... and wait.

Thanks, Zane; I'll work at it.