Some Useful Abbreviations in 3GPP

1. GTP : GPRS Tunneling Protocol, common protocol used in 3GPP architecture 
2. GTP - C : GTP Control, 
3. IIOP : Internet InterOrb Protocol; Orb itself is object request broker, much like RPC, used mainly in distributed system
4. OSS-RC : Operation Support System Radio Core
5. RNS : Radio Network Subsystem
6. RRC : Radio Resource Control
7. BSS-AP+ : Base Station System Application Protocol +