
SIP User's Manual 388 Document #: LTRT-65411
MediaPack Series
Term Meaning
MIB Management Information Base
MLPP Multilevel Precedence and Preemption
ms or msec Millisecond; a thousandth part of a second
MWI Message Waiting Indicator
NAPTR Naming Authority Pointer
NAT Network Address Translation
NPI Numbering Plan Indicator
NTP Network Time Protocol
OAMP Operations, Administration, Maintenance and Provisioning
OSI Open Systems Interconnection (Industry Standard)
PBX Private Branch Exchange
PCM Pulse-Code Modulation
PKI Public-Key Infrastructures
POTS Plain Old Telephone System or Service
PRT Prerecorded Tones (File)
PSTN Public Switched Telephone Network
PVID Port VLAN ID (VLAN ID assignment to Ethernet packet by switch)
QoS Quality of Service
RFC Request for Comment issued by IETF
RTCP Real-Time Transport (RTP) Control Protocol
RTP Real-Time Transport Protocol
SA Security Associations (contains encryption keys and profile used by IPSec to
encrypt the IP stream)
SAS Stand Alone Survivability Feature
SDP Session Description Protocol
SIP Session Initiation Protocol
SMDI Simplified Message Desk Interface
SME Small and Medium-sized Enterprise
SNMP Simple Network Management Protocol
SRTP Secure Real-Time Transport Protocol
SRV Service Record
SSH Secure Shell
SSL Secure Socket Layer (also known as Transport Layer Security (TLS))
STUN Simple Traversal of UDP through NATs
TCP Transmission Control Protocol
TCP/IP Transmission Control Protocol / Internet Protocol
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