System Release V6.0 on JCT 300 Intel

We have configured the JCT 300 board for R2MF using the System Release 6.0 version. but while trying to make call the first time it always fails. I think it might be because the channel/call state is GCST_NULL before making call and after too. But from the second try, the channel/call state will be GCST_IDLE before make call command is issued and becomes GCST_NULL after make call has been issued. Someone out there pelase help.
Please clarify whether the flows of channel states are correct or not and if not then tel lme how to get the channel state to GCST_IDLE state?
PLEASE HELP ASAP