Witch BT stack do i have?

[Rogge]

How do i find out witch Bluetooth stack i'am correctly using?

I have a Orange [NL] SPV M1000 (XDA2-PH10A) with the following device information:

Operater version: 3.66.3.171
ROM Version: 1.66.00WWE
ROM date: 02/20/04
Radio version: 1.10.00
Protocol version: 1337.18
ExtROM version: 1.66.171