[voipster]

I believe I figured out the problem. I configured VoIP using the cooked-in Schap 'Setup VoIP version 0.3' app adding a new provider called "SIP-TMC". Once I kick off a data session via IE, Opera, etc. it attempts to register with my SIP-based PBX. I think whether it registers or not, the Phone dialer changes the provider to "SIP-TMC" and tries to initiate ALL outbound calls through my SIP server. I have to DISCONNECT the data connection and then my service goes back to "Verizon Wireless" and THEN I can make outbound calls again.

I guess I didn't realize it was trying to go through "SIP-TMC" when dialing. Once I did figure out why it wasn't registering with my SIP server (firewall issues) I was able to make & receive VoIP calls over the EVDO connection.

Only problem is I can't seem to easily toggle providers back & forth - from SIP/VoIP over EVDO to Verizon Wireless cellular calls. I have to disconnect my data connection to get it to back to Verizon Wireless. Maybe that's just the way the cookie crumbles. Or maybe there is a skin out there that lets you click on the provider and change it on the fly. Anyone?