SDN:
Service dialing number
SIM:
Subscriber Identity Module
S/MIME:
Secure Multipurpose Internet Mail Extensions
SMS:
Short Message Service
SMSC:
Short Message Service Center
SSL:
Secure Sockets Layer
TCP:
Transmission Control Protocol
TLS:
Transport Layer Security
Triple DES:
Triple Data Encryption Standard
TTY:
Teletype
USB:
Universal Serial Bus
WAP:
Wireless Application Protocol
WML:
Wireless Markup Language
WTLS:
Wireless Transport Layer Security
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