Hi MotleyG and Andrew,
Thanks to you both for responding! I recently had a problem with my phone (Sprint) while on a road trip through Maine; I was having phone issues then too but because of the coincidence and timing of having installed PA and having hit the road again this last Thursday (on a touring M/C) right after installing PA, I didn't recall the recent trouble. Anyway, when I returned home from Maine I was able to get Sprint tech support to go through their troubleshooting steps and perform a sort of soft reset, if you will.
I did actually pull and check the sim card, per MotleyG's suggestion, even though I hadn't had any sim card error messages but it sounded like a good place to check and sure enough it was seated properly. I then called Sprint tech support, went through the 'soft reset' (as I am referring to it) with a tech again and voila!...phone is again working...and with PA working...
So, thank you gents! Looks like I'll be a regular PA user going forward!
All the Best, Rick