29 Appendix
374
ARGUS 152
IPoE
Internet Protocol over Ethernet
IPTV
Internet Protocol Television
ISDN
Integrated Services Digital Network
ISO
International Standards Organization
ISP
Internet service provider
ITSP
Internet telephony service provider
ITC
Independent TC
ITU
International Telecommunication Union
K
KB
Kilobyte
KVZ
("Kabelverzweiger") Cable branch box
kbit/s
Kilobits per second
L
L1
Layer 1 in the OSI reference model
L2
Layer 2 in the OSI reference model
L3
Layer 3 in the OSI reference model
LAN
Local Area Network
LAPD
Link access procedure for D-channels
LCD
Liquid crystal display
LCN
Logical channel number
LCP
Link Control Protocol
LED
Light-emitting diode
LLC
Low layer compatibility
LOS
Loss of synchronize
LOSWS
Loss of sync word seconds
LQ
Line qualification
LQO
Listening quality objective
M
m
Meter
MAC
Media Access Control
MB
Megabyte
Mbit/s
Megabits per second
MCID
Malicious call identification
MDF
Main distribution frame (see also HVT)
MDI
Media Delivery Index (RFC 4445)
min.
Minute
MLR
Media loss rate
MMS
Microsoft Media Server Protocol
Modem
Modulator-demodulator
MOS
Mean opinion score (ITU-T P.800)
MPEG
Moving Picture Experts Group