With technology moving so fast, it can be difficult to keep up. There are so many choices nowadays, when it comes to business voice communications. In this post, we cover the main types of business telephone systems available and explain the key differences between them.
Types of business telephone system
There are different types of business telephone systems available. Each type of system has different capabilities, features, benefits and drawbacks. Whether or not a particular type of phone system is suitable for a business will depend on a number of factors including the size and scale of its operations. Below, is a summary of each of the main types of business telephone system.
Key System Unit (KSU)
This type of phone system derives its name from its use of a central switching device called a ‘key system unit’ (KSU). Supported by a central device for connectivity, KSU systems are amongst the most basic phone systems available, although they do support multi-line connectivity and standard phone system features. The latest KSU systems, even come with some more advanced features. This type of phone system is generally best suited to SMEs that have between five and forty users. KSU systems benefit from scalability, providing users with the ability to extend the system and add features as and when required.
KSU – less
KSU-less systems are the most basic, and generally the cheapest, option available. This is because they only offer basic features and the technology is retained in the phones themselves, which means that they don’t require installation of a central control unit in order to operate (hence the term ‘less’). This does, however, offer an advantage in terms of portability. KSU-less systems support just 2-4 lines and these are not permanently wired into an infrastructure. This type of system is only really suitable for very small businesses that have less than ten users. A downside to KSU-less systems is that they don’t allow for expansion. Installation and maintenance of these systems is not typically offered by business telephone system providers. They are more of a DIY option, so to speak.
Private Branch Exchange (PBX)
Private Branch Exchange (PBX) phone systems are more advanced than KSU and KSU-less systems. This type of phone system is commonly used by large and medium sized organisations that have in excess of forty users. It is powered by a central PBX cabinet and offers users the advantage of an uninterruptable power supply (UPS) for the protection of business continuity. In addition to the basic features found with virtually all phone systems, PBX systems offer the advantage of numerous advanced features as well. This type of phone system is highly flexible and suitable for the complex requirements of large organisations. Although the initial cost of a PBX system is typically much higher than a more basic KSU system, this option can prove to be more cost-effective over time due to the enhanced flexibility and features.
Hosted PBX
Hosted PBX systems are the same as standard PBX systems in terms of functionality. The only difference with these systems is that the central switching devices are not installed in the premises of the user. Instead, the phone system is hosted by a third party service provider. It is, essentially, a rental service since the phone system itself is not technically owned by the user. A hosted PBX system is owned, managed and maintained by the provider. The benefits of choosing this type of system include a low initial capital expenditure and ongoing maintenance and support included. Users incur recurring monthly payments for the provision of the service.
Voice over Internet Protocol (VoIP)
VoIP telephone systems utilise a different kind of technology to the more conventional KSU and PBX phone systems. Instead of using the traditional copper telephone lines, VoIP calls are made over an internet connection. Because of this, VoIP phone systems offer the advantage of lower call costs, including to international numbers. VoIP phone systems are ideal for organisations that operate across multiple sites because everyone can easily connect to the system, whether they are working from home, on the go or at separate offices. VoIP systems are able to support any number of users, making them ideal for businesses of all shapes and sizes.
Hosted VoIP
Much like hosted and in-house PBX phone systems, hosted VoIP phone systems are essentially the same as in-house VoIP phone systems in terms of functionality. The difference, here, is that hosted VoIP phone systems are a cloud service that is delivered remotely by a specialist provider. This service includes all ongoing maintenance of the system as well as support. The system is, essentially, rented by the user who connects to it via the internet. One of the main benefits of hosted VoIP is the low initial expenditure. The user incurs a recurring monthly charge for the service, which is normally charged per user. Because of this pricing structure, hosted VoIP systems tend to be more beneficial for SMEs.
So, these are the main types of business telephone systems that are available. Hybrid systems are also available, such as systems that incorporate both traditional voice and VoIP. These are ideal for businesses that would like to make a slower transition to VoIP, or those which are undecided. If you’re not sure which type of phone system is the best choice for your business, we recommend that you seek advice from a specialist provider.
If you’re looking for business telephone systems in the West Midlands, contact Midland Networks today.