1. First, I suggest dumming down your Dial Plan to this (it should continue to do everything your current one does):
(<:1>[2-9]xx[2-9]xxxxxxS0|011xx.|1[2-9]xx[2-9]xxxxxxS0|*xx|[*#x][*x].)
2. A few highlights that may help with incoming calls
-Preferably make sure you have STUN set up in your ATA (stun.xten.com has been working for me)
-If you are behind a router that has UPnP, make sure it's active
-This is optional, but it may help to open these port ranges and forward them to your ATA's IP:
5050-5064
5000-5005
16384-16482 (This is a bit hardware/software specific, but it is the correct range for the PAP2)
-Take a look at this if it helps:
Setting up Linksys PAP2 - Voxalot FAQ
-I'd suggest this codec string in your Provider setup in VoXalot: ulaw;alaw;g726;g729;ilbc;gsm
-You may also want to consider Audio Optimization:
HowTo: 6 Steps To Optimize Your Audio - Voxalot FAQ
Confirming things are working:
Outgoing Calls : Can you reach *600 (Echo Test)
Incoming Calls: Can you reach the ATA via SIPBroker or the EziDial
3. About speeding up dialing
You can speed up dialing delays by entering # after you have dialed the number you wish to call