Version 5.8 483 September 2009
SIP User's Manual 13. Glossary
13 Glossary
Table 13-1: Glossary of Terms
Term Meaning
ADPCM Adaptive Differential PCM - voice compression
A-law Standard companding algorithm, used in European digital communications
systems to optimize the dynamic range of an analog signal for digitizing.
AOR Address of Record
bps Bits per second
BootP AudioCodes Proprietary Bootstrap Loader Utility
CoS Class of Service
CMP Compressed File (device Firmware)
CPT Call Progress Tones
dB Decibels
DHCP Dynamic Host Control Protocol
DID Direct Inward Dial
DiffServ Differentiated Services
DNS Domain Name System (or Server)
DR Debug Recording
DSP Digital Signal Processor (or Processing)
DTMF Dual Tone Multiple Frequency (Touch Tone)
ETSI European Telecommunications Standards Institute
FQDN Fully Qualified Domain Name
FXS Foreign Exchange Station
FXO Foreign Exchange Office
GRUU Globally Routable User Agent URIs
ICMP Internet Control Message Protocol
IETF Internet Engineering Task Force
IKE Internet Key Exchange (for IPSec)
IP Internet Protocol
IPSec IP Security
ISO International Standards Organization
ITU International Telecommunications Union
ITU-T Telecommunications section of the ITU
Jitter Variation of interpacket timing interval
kbps Kilobit per second. 1,000 bits per second
Mbps Megabit per second. Million bits per second
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