Version 5.8 485 September 2009
SIP User's Manual 13. Glossary
Term Meaning
STUN Simple Traversal of UDP through NATs
TCP Transmission Control Protocol
TCP/IP Transmission Control Protocol / Internet Protocol
TFTP Trivial File Transfer Protocol
TLS Transport Layer Security
TON Type of Numbering
UA SIP User Agent
UDP User Datagram Protocol
URI (SIP URIs) SIP Uniform Resource Indicators
VBD Voice-band data
VLAN Virtual Local Area Network
VoIP Voice over Internet Protocol
VoP Voice over Packet(s)
VPN Virtual Private Network
µ-Law A companding algorithm, used in the digital telecommunication systems