Linksys SPA 900 Series User Manual
Page 161
A-2
Linksys IP Phone Administrator Guide
Firmware Version 5.1
Appendix A Acronyms
FXS
Foreign eXchange Station
GW
Gateway
ITU
International Telecommunication Union
HTML
Hypertext Markup Language
HTTP
Hypertext Transfer Protocol
HTTPS
HTTP over SSL
ICMP
Internet Control Message Protocol
IGMP
Internet Group Management Protocol
ILEC
Incumbent Local Exchange Carrier
IP
Internet Protocol
ISP
Internet Service Provider
ITSP
IP Telephony Service Provider
IVR
Interactive Voice Response
LAN
Local Area Network
LBR
Low Bit Rate
LBRC
Low Bit Rate Codec
MC
Mini-Certificate
MGCP
Media Gateway Control Protocol
MOH
Music On Hold
MOS
Mean Opinion Score (1-5, the higher the better)
ms
Millisecond
MSA
Music Source Adaptor
MWI
Message Waiting Indication
OSI
Open Switching Interval
PCB
Printed Circuit Board
PR
Polarity Reversal
PS
Provisioning Server
PSQM
Perceptual Speech Quality Measurement (1-5, the lower the better)
PSTN
Public Switched Telephone Network
NAT
Network Address Translation
OOB
Out-of-band
REQT
(SIP) Request Message
RESP
(SIP) Response Message
RSC
(SIP) Response Status Code, such as 404, 302, 600
RTP
Real Time Protocol
RTT
Round Trip Time
SAS
Streaming Audio Server