The control channel format is nearly identical for Phase 1 and Phase 2 systems. Phase 2 has a few extra commands but the modulation, bit rate, and packet structure are the same.
If you're having trouble decoding, please give some info like - what radio(s) you're using and how you have them configured. Screenshots of the receiver window. When available, a screenshot of the 'Scope tab is also useful.
The biggest problem with P25 signals over Motorola and EDACS is P25 won't decode when partially clipped so recording volume adjustment is a bit more sensitive.