Cisco Linksys SPA9000 - Manual (Page 208)

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Linksys SPA9000 Administrator Guide
Document Version 3.01
Appendix A Acronyms
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
SDP Session Description Protocol