Voice Over Internet Protocol (VoIP)

VoIP Implementation Checklist

Research & Analyse


Do you want to:

  • reduce the cost of communicating externally?
  • enhance internal communications?
  • improve communications support for remote and mobile workers?
  • introduce integrated voice/data services?

Agree specific, measurable objectives for what you want to achieve.


  • What proportions of voice calls are internal, external, between corporate locations?
  • Identify the level of data and voice traffic at peak times. Is this likely to change in future?
  • Do you need to upgrade PCs? You will need Pentium PCs or Apple G4s as a minimum.
  • Is there sufficient bandwidth during periods of peak activity?
  • What management and monitoring tools do you need?
  • If you intend to introduce high bandwidth applications like videoconferencing does your cabling/wireless infrastructure deliver sufficient bandwidth to each desktop?


  • Will you need to upgrade your existing network? Allow for the cost of this.
  • What is the cost of additional equipment, installation, training and maintenance?
  • What are the anticipated call savings?
  • What are the expected savings in operating costs?
  • Can you assess any productivity benefits?
  • How long will it take to plan, install, configure and trial a new system?


  • Look at VoIP-enabling your switchboard.
  • Do you want to use VoIP to bypass the public telephone system?
  • Should you use an ITSP (Internet Telephony Service Provider)?
  • Look at interoperability with your existing systems.
  • Look at your needs for mobile communications and check for SIP compatibility.
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