Asterisk: The Future of Telephony: The Future of Telephony

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]

Variable Bitrate (VBR) codecs

variable manipulation

variables

        AstDB, setting

        ImportVar( ) application

        Macro( ) application

        reading from STDIN with fgets function

        sent by Asterisk to AGI script at startup 2nd

        sent by Asterisk to AGI script on startup

variables, using in dialplan

        adding variables to dialplan

        channel variables

        environment variables

        global variables

VERBOSE command

Verbose( ) application

verbosity , setting level for debugging messages

VIA-based motherboards, compiling Asterisk on

video

video camera connected to PC, live chats through

video components (built-in) on motherboards

video-conferencing

        IP transport mechanism (H.323)

Virtual Private Network (VPN), use with IAX

VMAuthenticate( ) application

voice menus , creation with Background( )

Voice of Asterisk

voice prompts for Asterisk, sounds/ directory

voice, high-fidelity

voice-compression algorithms

voice-messaging, uniting with text messaging

voicemail

        accessing

        adding to dialplan

        applications

        creating mailboxes

        dial-by- name directory

VoiceMail( ) application 2nd

voicemail.conf file 2nd

voicemail/ directory

VoiceMailMain( ) application 2nd

Voicetronix, analog cards

VoIP (Voice over IP) 2nd

        access to, for legacy PBX

        alternative route to an extension number or PSTN telephone number

        Asterisk and

                register statements

                users, peers, and friends

        bottleneck engineering

        codecs

        echo

        Free World Dialup (FWD) service provider

        gateways providing access to PSTN circuits

        mobility with Wi-Fi

        need for protocols

        packet-switched networks

        proprietary protocols

        protocols

                H.323

                IAX

                MGCP

        protocols in use today

        Quality of Service (QoS)

                best effort method and

                DiffServ

                guaranteed service

                TCP, UDP, and SCTP

        Quality of Service, challenges to

        Session Initiation Protocol (SIP)

        SIP and IAX protocols

        spam

        Zapata Telephony Project

voltage

        AC and DC, in analog phones

        boosting for telephone during ringing

VPN (Virtual Private Network), use with H.323 protocol