we don't see CHANnel ReQireD from motorola EZX phones at call setup
This is very weird. The EZX phones like E6, A1200, etc. can do a successful LOCATION UPDATING procedure, but after they are registered they can only process incoming calls.
so paging request is working, and the channel request procedure is working as part of the paging request and the location updating.
IF you want to start a MO call, we never see any channel required (i.e. RACH burst).