C

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CAC (Carrier Access Corporation) ground start signaling
call files
call parking
call transfer, configuring on FXO channel
call waiting
        configuring for FXO channel
        on analog line
Caller ID
        configuring for FXO channel
        LookupCIDName( )
        SetCallerID( ) application
CALLERIDNUM channel variable
CallingPres( ) application
Carrier Access Corporation (CAC) ground start signaling
CAS (Channel Associated Signaling)
CBR (constant bitrate ) encoding (MP3 files)
cdr.conf file
cdr_manager.conf file
cdr_odbc.conf file
cdr_pgsql.conf file
cdr_tds.conf file
CDRs (Call Detail Records)
        challenges to obtaining
        recording
        storage directory
        storing in a database
Celeron processors, Asterisk lab systems on
cellular telephone networks, end of
central office (CO), signaling incoming call on analog phone
Cepstral text-to-speech engine
chan_h323.so module
chan_iax2.so module
chan_mgcp.so module
chan_oh323.so module
chan_sip.so module
chan_zap (channel module)
ChangeMonitor( ) application
ChanIsAvail( ) application
Channel Associated Signaling (CAS)
channel banks
        CAC, FXS ground start signaling
CHANNEL STATUS command
channel variables
        ${EXTEN}
        CALLERIDNUM
channels
        configuration
        FXO and FXS
                configuring FXS
                FXO configuration
        hardware, signaling methods and options
        separation of B- and D- channels in ISDN
        SIP, configuring
        STDIN, STDOUT, and STDERR
        timeouts, setting
        VoIP (Voice over IP) channels
CheckGroup( ) application
checkresult function 2nd
checkresult subroutine
chkconfig --add asterisk command
chkconfig command
circuit-switched telephone networks 2nd
        BRI ISDN
circuits
        OC (optical carrier)
        types in PSTN
                DS-0
                T-carrier
Cisco VoIP proprietary protocol (SCCP)
CLI (command-line interface)
        reference
client, configuration in SIP
clocking mechanism (ztdummy)
closed thinking in telecommunications industry
codecs 2nd
        compressed, DSP load on system
        configuring for IAX
        G.711
        G.723.1
        G.726
        G.729 codec
        G.729A
        GSM
        IAX outbound connections
        iLBC (Internet Low Bitrate Codec)
        MP3
        quick reference
        Speex
        VoIP
codecs.conf file
command line, storing values from in AstDB
comment tags (/* */) in zconfig.h file
commoditization of telephony hardware and software
communications terminals
companding
        A-law, in E-1 circuits
        G.711 codec
        m-law algorithm, on T-1 circuits
compiler, GCC
compiling
        Asterisk
                alternative make arguments
                common issues
                Makefile options
                precompiled binaries, using
        libpri
        Zapata drivers, telephony
        Zaptel drivers
                zconfig.h file
                ztdummy
        Zaptel, common problems
complexity of open systems
computer power supplies
concatenating destinations for Dial( )
conditional branching
        GotoIf( ) application
        time-based, with GotoIfTime( )
conference rooms
conferencing
        MeetMe( ) application
        MeetMeCount( ) application
        system requirements and
        timing source
        video-conferencing
CONFIG_CALC_XLAW
configuration
        initial, of Asterisk
                debugging
                FXO and FXS channels
                IAX connections, inbound
                IAX connections, outbound
                interface configuration files
                SIP channel
configuration files
        /etc/asterisk/ directory
        Asterisk, disabling overwrites
        default, installing for Asterisk
        voicemail.conf
Congestion( ) application 2nd
Conjugate-Structure Algebraic-Code-Excited Linear Prediction (CS-ACELP)
connections, maximum number to be supported by the system
console
        connecting to Asterisk console
        Linux, specifying for Asterisk CLI output
        remote console on TTY9
constant bitrate (CBR) encoding (MP3 files)
contexts
        [ globals ]
        adding to dialplan for internal calls
        adding to dialplan for long-distance calls
        calls entering without specific destination extension
        dialplan
                [general]
                defining extensions
        DUNDi, creating and mapping to dialplan contexts
        FXS channel
        IAX FWD incoming calls
        incoming calls on FXO interface
        internal, FXS channel
        outbound dialing, adding to dialplan
        peer connections and
        SIP channel
        using within another context, via includes
        voicemail 2nd
ControlPlayback( ) application
cords
core file, dumping after Asterisk crash
        safe_asterisk script
countries , phone system sounds for
CPUs
        choosing for Asterisk system
        performance effects on Asterisk system
        performance information, web sites
crash notifications
CRLF, terminating lines in commands to Manager
cryptographic library, Asterisk, requirement of OpenSSL
CSV (Comma Separated Values) file, CDR details
CSV format (CDRs)
Curl( ) application
Cut( ) application
CVS
        obtaining Asterisk source code from
        stable CVS branch vs. releases