Hi,
I have a nanobts unit 139 with a software that somehow only accepts GSM FR
(and not EFR), unless I also send the RTP payload type IE (
RSL_IE_IPAC_RTP_PAYLOAD ) in the CRCX and MDCX messages. (and only the "RTP
payload type" IE, the "RTP payload type 2" has no effect I can see).