RAI flag on BG770A

Does BG770A support AS-RAI or is there just CP-RAI (NAS-RAI) support?
Is there any difference in using AT+QCFG="raiflag" or AT+QISENDEX for specifying it?

AT+QCFG=“raiflag” It will attach the RAI flag to every uplink packet
AT+QISENDEX It implements RAI features only through UDP methods