How do I Determine the Right Size PBX System?

By Robin Wilding
Updated: April 01, 2011

Determining the size PBX you require should be based on two factors:

  1. The Number of Lines
  2. Number of Extensions

When you add the number of lines/trunks (outside lines) and extensions (handsets, faxes, credit card machines, modems, etc) together you will have how many ports you need from a PBX. While most small offices, small businesses and remote and branch locations will be served well by a small office PBX, some phone-intensive business like call centers may require a larger system. 


Featured Research
  • Is Your Phone System Meeting the Needs of Your Workforce?

    When was the last time you evaluated the performance of your current business phone system? For most people, the answer is too long ago. Phone systems are one of the most overlooked tools in business, even though they’re also one of the most important in terms of employee productivity. more

  • Why are Companies Still Using PBX?

    For years, all kinds of businesses depended on Private Branch Exchange (PBX) phone systems to help facilitate direct, line-to-line communication. Over the course of the past decade, however, Voice over Internet Protocol (VoIP) technology quickly became the go-to resource for brands. more

  • Top 15 Reasons You Should Upgrade to VoIP

    While more businesses make the switch to VoIP every single day, there are also many that choose to stay with the system they are used to.The rationale is almost always the same. You don’t want to shake things up when what you are already using is working. more

  • [Infographic] 16 Mistakes to Avoid When Buying a Phone System

    Choosing a phone system for your business isn’t as easy as it looks. Most people learn this the hard way. You choose a new system, and everything seems fine. Until it isn’t. In hindsight the problems always seem obvious, yet countless businesses fall into the same traps every year. more

  • What You Need to Know About VoIP Security

    No matter the industry or area of expertise, a strong VoIP system is the perfect tool for any business looking to take both its internal and external communication to the next level. more