There are three major types of phone system whose choice depends on some extensions and the features your telephone requires. They are the KSU-Less system, Private Branch Exchange system and the Key Phone System
The KSU-Less system
This kind of phone system is suited for companies with less than ten employees or those that need less than ten extensions. It does not necessary mean that companies who need less than ten extensions can only use the KSU-less system. You may need fewer phones with features that are only available in key phone system or the PBX.
Unlike other phone systems, the KSU-less system is specifically designed to include features that are only available through the implementation of an entire small business phone system. They can be relocated and unplugged since they are not wired permanently in an office. The portability factor allows you to treat the phone system as any other type of machine, which doesn’t have a permanent value.
It is essential to ensure that this phone system is compatible with accessories and type of wiring in your office. It’s because installation and maintenance are done solely as telecom vendors do not deal with this kind of system. A major drawback that comes with this sort of system is that all the support is primarily dependent on you. There might also have the risk of crosstalk where conversation for separate extensions blends into each other.
Private Branch Exchange systems
This system is suitable if your business functions call for advanced phone systems or more than 40 extensions. Earlier on, PBX was perceived to be very expensive and only used by large corporations. The situation has changed such that the phone system has been enhanced in such a way that it can also be employed by small businesses.
Most of the compact PBX phone system comes with a standard feature. However, you can subscribe for premium programmability and flexibility that tags along PBX although price difference is not as much with the less flexible system.
The Key Phone System
The keyphone system holds from five to forty extensions and uses a control unit known as the key system unit in the provision of functions and features that are not available in the regular phones. Such features include preventing picking off lines that are already in use. The key phone system has standard features that many businesses would make use of but is less flexible than the PBX phone system.
Although the key phone system and the PBX have various technical differences, in the last couple of years, these differences have become blurred. A lot of key phone systems in the recent times offer features that were primarily only available to the people who decided to use a full the PBX system. It is important to note that some systems either operate internally as a Key system or the PBX system depending on the type of software installed. These two categories of systems are sometimes referred to as the hybrid phone systems.