neither one mean anything?
do you mean effective_caller_id_name effective_caller_id_number vs origination_caller_id_name origination_caller_id_number
if so
effective_caller_id_name/number are variables you set on an inbound channel so when that inbound channel calls the bridge app to connection to an outbound channel, it will pass the values in that variable instead of the actual caller_id fields that were passed by the caller.
origination_caller_id_name/number are variables you set in a dial-string to control the caller-id
{origination_caller_id_name=test,origination_caller_id_number=51212}sofia/internal/
foo@bar.com
This is independent of the inbound leg and is also usable when there is no inbound leg such as with the originate cli command.