Date of Issue: 01-01-2023 Rate this Study Guide

Voice over X

by Jason Sinclair

Standards Map
Voice Principles
  Digital Transmission
  Analog Signaling
    ISDN Signaling
Voice over X Implementation Services
  Toll Bypass
    Voice over ISDN
Voice over IP
  Voice over Frame Relay
  Voice over ATM
IP Telephony
  IP Phones
Start Dial Supervision -- Seize the Trunk
  Wink Start
  Immediate Start
  Delay Start
  Ground Start
  Loop Start
Address Signaling
  Dial Pulse Signaling
  Dual Tone Multi-Frequency (DTMF)
  E&M Signaling
Call Control Signaling
Voice over IP Hardware
  Analog Ports
    FXS Ports
    FXO Ports
    E&M Ports
  Digital Ports
Signaling and Transport
    Gatekeepers Are Optional
  H.323 Call Stages
    H.323 Discovery and Registration
    What Is a Zone?
    Intrazone Call Placement
    Interzone Call Placement
    H.323 Call Setup
    Media Channel Setup
    Media Stream and Media Control Flows
    Call Termination
  Session Initiation Protocol
    SIP Components
    SIP Messages
  Media Gateway Control Protocol
    MGCP Supports Only VoIP
    MEGACO and H.248
    MEGACO Provides Translation
Additional VoIP Considerations
  Dial Plans
  Bandwidth Requirements
  The Importance of Delay
  The Role of QoS
Configuring Voice over IP
  Configuring FXS/FXO Ports
    Configuring Voice Activity Detection (VAD)
  Configuring E&M Ports
  The connection Command
    connection plar
  Configuring Dial Peers
    Dial Peer Tags
    Codecs Must Match!
  Configuring Digit Manipulation
  Configuring Voice over Frame Relay
    Map Classes
  Configuring Voice over ATM
  Configuring Digital Voice
  Adding Q.931 Support
  Configuring QSIG
  Configuring CAS
  Configuring CCS
Conclusions and Summary

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