Cisco IOS Telephony Services—The former name of Cisco CallManager Express.
L
LDAP
Lightweight Directory Access Protocol
M
MGCP
Media Gateway Control Protocol
MWI
Message waiting indicator
N
NM
Network Module
NTP
Network Time Protocol
O
OIR
Online insertion and removal—Feature that permits the addition, the replacement, or the removal of cards without interrupting the system power, entering console commands, or causing other software or interfaces to shutdown. Sometimes called hot swapping or power-on servicing.
P
PIN
Personal Identification Number
R
RTP
Real-Time Transport Protocol
S
SCCP
Skinny Client Control Protocol
SIP
Session Initiation Protocol
SRST
Survivable Remote Site Telephony
SNAP
Subnetwork Access Protocol
SNMP
Simple Network Management Protocol
T
TFTP
Trivial File Transfer Protocol
TUI
Telephone User's Interface
U
UART
Universal Asynchronous Receiver/Transmitter—Integrated circuit, attached to the parallel bus of a computer, used for serial communications. The UART translates between serial and parallel signals, provides transmission clocking, and buffers data sent to or from the computer.