RSC Register Service Center
RTOS Real Time Operating System
RTP Real-time Transport Protocol
RTU Remote Terminal Unit
RSVP Resource reSerVation Protocol
SCADA Supervisory Control and Data Acquisition
SGSN Serving GPRS Support Node
SIM Subscriber Identify Module
SMS Short Message Service
SMSC Short Message Service Center
SNMP Simple Network Management Protocol
STK SIM Tool Kits
TCP Transmission Control Protocol
TDMA Time Division Multiple Access
TMN Telecommunication Managed Network
UDP User Datagram Protocol
UIM User Identify Module
UMTS Universal Mobile Telecommunication System
USSD Unstructured Supplementary Service Data
UTK UIM Tool Kits
VLR Visitor Location Register
WAN Wide Area Network
WAP Wireless Application Protocol
WDDN W ireless Digital Data Network