Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] B- and D-channels, PRI circuits B-channels (bearer channels) Background( ) application 2nd sound files, specifying BackgroundDetect( ) application bandwidth analog telephony network, future of PCM-encoded telephone circuit Basic Rate Interface (BRI) ISDN circuits 2nd Berkeley DB Version 1 database best effort method, QoS and binary one (1), voltage and binary zero (0), relation to 0-volt signal BIOS control over IRQ assignment USB activation bison parser not found, error caused by bit resolution, analog wave samples increasing resolution bit-resolution, analog wave samples effects on quality of digitally encoded waveform bitrates ADPCM (Adaptive Differential PCM) Variable Bitrate (VBR) codecs blacklist, looking up numbers on Boolean operators BOOST_RINGER option (zconfig.h file) boostringer parameter, activating for Zaptel BRA (Basic Rate Access) ISDN circuits BRI (Basic Rate Interface) ISDN circuits 2nd bridged calls, echo cancellation buffering output flushing after every write in Python AGI script turning off in AGI Perl scripts 2nd turning off in AGI PHP script 2nd bug fixes built-in audio and video components on motherboards business case for Asterisk flexibility for growth busy destination Dial( ) application handling of busy message, voicemail busy signal, fast Busy( ) application |