What to look for before purchasing an IP PBX system

By Kevin Stewart
Updated: January 31, 2011

IP PBX systems apply the advanced technology of Voice over IP (VoIP) to deliver the features of Private Branch eXchange (PBX) telephone systems. When choosing an IP PBX system for your organization, you should consider the following factors:

  • Hosted vs. on-premise
  • Calling capacity
  • Number of locations
  • Feature set
  • Security

Hosted vs. On-Premise

The choice between a hosted system and an on-premise IP PBX depends on the type of business you operate. Many technology businesses have a large network budget, and they are able to leverage their technology expertise and their overall spending to purchase and operate their own IP PBX equipment. For businesses that just need to get up and running with a solid system, the better choice may be a hosted solution. With its flexibility, guaranteed availability, and support, the hosted option is worth considering for any organization.

Sizing

Sizing your system is a good next step. One of the advantages of IP PBX systems is their flexibility, but it is important to have enough calling capacity to support your business needs. Most systems start with support for 20 stations, and some offer support for an unlimited number of calling stations.

Number of locations

In the past, telephone systems were restricted to their physical locations. Using IP PBX, your company can operate from multiple virtual locations, while maintaining a single physical location. Even international calling is supported using VoIP technology. This allows your business to maintain a presence in the markets it serves, by providing a toll-free or local number that callers will be comfortable using.

Features

The list of features available with IP PBX can be overwhelming, but making a short list of your highest priority capabilities will help you choose the right systems. All systems will have the basic incoming feature set, such as call waiting, call forwarding, and voice messaging. Extended features such as voice to email or voice to text messaging are also becoming standard IP PBX features. You should also determine whether your highest call volumes will be incoming or outgoing. The features needed for call centers that make or receive a large volume of calls are very different from a typical office that has an even balance of call activity.

Security

Security is a major concern for any business telephone installation. If your premises are secure and under your control, then an on-premise IP PBX system should be adequate in terms of physical security. In some shared office situations where you do not control the telephone system cabinet, on-premise may actually be less secure than the hosted alternative. For call and data security within the IP PBX, there are varying levels of security available, from unencrypted through strong encryption. Before you purchase your system, make sure it meets your organization’s security requirements.
 

Featured Research
  • Why Your Educational Institution Needs to Implement VoIP

    VoIP makes a lot of sense for educational institutions—and it’s not just because of the substantial cost savings. Other benefits include increased efficiency and integration options. Emergency responsiveness can even be improved. more

  • 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