GLOSSARY
3GPP Third-generation partnership project
A Advantage factor (in R-factor)
AAL5 ATM adaptation layer 5
ABNF augmented Backus–Naur form
AC alternating current
ACELP algebraic code excited linear prediction
ACK acknowledgment
ACR absolute category rating
ADC analog-to-digital converter
ADPCM adaptive differential pulse code modulation
ADSL asymmetric DSL
ADSL2 asymmetric DSL 2
AFE analog front end
AGC automatic gain control
AJB adaptive jitter buffer
A-law logarithmic 64-kbps compression, which is the same as G.711 PCMU
ALC automatic level control
ALG application level gateway
ALU arithmetic logic unit (ALU)
AM amplitude modulation
AMR adaptive multi rate
AMR-HR AMR half rate
AMR-FR AMR full rate
AMR-NB adaptive multirate narrowband
AMR-WB adaptive multirate wideband
ANS answer tone, which is the same as CED
/ANS ANS with phase modulation
ANSam ANS tone with amplitude modulation
/ANSam ANS tone with amplitude and phase modulation
ANSI American National Standards Institute
APP application-specific function
ARQ automatic repeat request
ASN abstract syntax notation
ASN.1 Abstract syntax notation.1
ATM asynchronous transfer mode
ATT American Telephone and Telegraph
BCG bulk call generator
B-Channel Bearer Channel
BNLMS block normalized least mean square
BORSHT battery, overvoltage protection, ringing, supervision, hybrid, and test functions (in the telephone interface)
BPF band-pass filter
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