R&TTE 

Radio and Telecommunications Terminal Equipment

RA 

Routing Area

RAB 

Radio Access Bearer

RACH 

Random Access Channel

RADIUS 

Remote Authentication Dial In User Server

RAG 

Radio Architecture Group

RAM 

Random Access Memory

RAN 

Radio Access Network 

RAN 

Remote Access Node

RANAP 

Radio Access Network Application Part

RBOC 

Regional Bell Operating Company

RD 

Routing Domain

RDBMS 

Relational DataBase Management System

RDF 

Rate Decrease Factor

RDI 

Remote Defect Indication

REG 

Radio Engineering Group

RFA 

Ready for Acceptance

RFC 

Request For Comment

RFP 

Request For Proposal

RFQ 

Request For Quotation

RFS 

Ready for Service

RIF 

Rate Increase Factor

RIPE 

Résaux IP Européens

RIR 

Regional Internet Registry

RL 

Radio Link

RLC 

Radio Link Control

RM 

Resource Management

RM-Cell 

Resource Management Cell

RMI 

Remote Methode Invocation

RNC 

Radio Network Controller

RNM 

Radio Network Parameters

RNS 

Radio Network Subsystem (one RNC area)

RNSAP 

Radio Network Subsystem Application Part

RNTI 

Radio Network Temporary Identity

RNW 

Radio NetWork

Roaming 

automatic mobile location

RPV 

Réseau Privé Virtuel

RR 

Radio Resource

RRC 

Radio Resource Control

RRM 

Radio Resource Management

R-SGW 

Roaming Signalling Gateway

RSS 

Rich Site Summary

RSU 

Remote Subscriber Unit

RT 

Real Time

RTCP 

Real Time transport control protocol

RTNM 

Réseau de Transport Númerique Multiservice

RTP 

Real Time protocol

RTSP 

Real-Time Streaming Protocol

RTX 

Rated Transaction Record

RX 

Receive