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package managers
        RPM
packages
        requirements
packet-based
        connections
        telephone network, exclusive Asterisk connection to
packet-switched networks
packetization of audio streams for transport over IP networks
Park( ) application
ParkAndAnnounce( ) application
ParkedCall( ) application
parking calls
parser generator program (bison)
passwords
        DUNDi user
        secret (SIP)
        voicemail mailbox
pattern matching
        DUNDi dialplan
        examples
        syntax
PauseQueueMember( ) application
pbx_dundi module
pbx_dundi.so module
PBXs (Private Branch eXchanges)
        dedicated electrical circuit for
        digital
                terminals
        electrical circuits
PBXs (Public Branch eXchanges), legacy, Asterisk as migration gateway
PC platforms, Asterisk on
PCI hardware
        access by Zaptel and other device drivers
        zaptel module, using with
PCI hardware for timing
PCI ID (TDM400P Revision H card)
PCI slots, server vs. workstation motherboards
PCI Version 2.2
PCM (Pulse-Code Modulation)
        Adaptive Differential PCM (ADPCM)
        aliasing
        bandwidth of PCM-encoded telephone circuit
        digitally encoding analog waveform
        encoded analog waveform
        encoding method in E-1 circuits
        G.711 codec
        increasing sampling resolution and rate
        Nyquist's Theorem
PDAs, connecting to voicemail to retrieve messages
peering
peers
        connections defined as
        DUNDi, defining
        IAX outbound calls, authentication
        IAX, placing outbound calls
        SIP connections
performance
        issues for hardware selection
        shortcomings on inadequate systems
peripherals
        connection to electrical receptacle
        IRQ latency and
Perl
        AGI library
        writing AGI scripts in
                summary of important steps
phone trees
phone.conf file
PHP
        AGI library
        writing AGI scripts in
                important steps to remember
                invoking PHP with -q switch 2nd
physical telephones
pid (process id) information
PLAR (Private Line Automatic Ringdown) circuit
platform selection process
Playback( ) application 2nd
        sound files, specifying
Playtones( ) application
ports
        RTP (Real-time Transport Protocol)
        SIP
power supplies
        computer
        power quality issues and
        redundant
power-conditioning, UPSs
PRA (Primary Rate Access) ISDN circuits
precompiled Asterisk binaries
Prefix( ) application
PRI (Primary Rate Interface) ISDN circuits
pri debug command
pri intense debug span command
pri no debug command
pri show debug command
pri show span command
Primary Rate Interface (PRI) ISDN
print command
print STDERR command
priorities (extension)
        Dial( ) application and
        s extension
        unnumbered
privacy.conf file
PrivacyManager( ) application
Private Line Automatic Ringdown (PLAR) circuit
process ID (pid) information
processes, running concurrently on the system, Asterisk and
processors
        choosing for Asterisk system
        multiple, use of
professional's PBX
profiling information (debug)
Progress( ) application
prompts
        asterisk-sounds package
        customizing system prompts
        recording from the dialplan
proprietary digital telephones
proxy servers, SIP
PSTN (Public Switched Telephone Network)
        circuit types
        connecting Asterisk to
        echo cancellation
        G.711 codec
        Last Mile
Public Switched Telephone Network (see PSTN)
public/private key system
Putland, Karl
Pyst module
Python
        AGI library
        writing AGI scripts in
                important steps to remember