Just which Bluetooth protocols does the 8703e use and do all BB's use the same or do the protocols vary from phone to phone?

If I am not mistaken the 8703e has support for the following protocols
Handsfree
Headset
Wireless Bypass
Desktop Connectivity

And I am not sure about this one since I think verizon blocks it somehow but
Dial Up Networking

Thanks for the reply but I was kinda wondering about the actual Bluetooth stack. OPP, ObEx, PBAP, SYNC and any others I'm not thinking of right now.

Yea DUN is there but they have to enable you at the switch level.