There are a number of different phone systems in the marketplace and if you are looking for one will explain the different types that are available which will hopefully give you a good guidance in making the correct decision for your business.
Essentially you can purchase 4 different types which include Private Branch Exchange (PBX) systems, key systems, KSU-less phones and Voice-Over-Internet Protocol (VoIP).
Key Systems - this is a basic phone system but gives you some extra functionality then you would not get with a normal phone. For example it'll let you dial internal extensions so you can make phone calls from office to office. Typically this type of phone system will support around 40 different extensions at its upper limits.
Private Branch Exchange (PBX) system - which is that the system you can go to 100's of extensions. It has lots of oceanography built into it so that you can customize handsets for individual people, departments etc. generally the administrator can program the buttons on the phone with certain functionality. You can have extra phone numbers on extensions, voicemail, call forwarding, internal dialing and so much more. You'll find that there are many phone manufacturers out there competing in this area.
KSU-less Phone System - these are small phone systems that you will generally find in companies with maybe less than 10 people. Administration is very limited but it's really down to what you require and the phone system. It is simply want to make phone calls and have a number of extensions maybe this is an ideal system for the small business owner.
VOIP (Voice over Internet Protocol) - more and more businesses are beginning to use voice over IP systems. They use a protocol called SID which is allows you to make phone calls over the Internet. Of course, many businesses and companies will have Internet access anyway so being able to simply plug a phone in to let you to make phone calls (sometimes free if it is voip to voip calls) and this can drastically reduce overheads for many businesses.
As you can see from the listenable there are a number of different systems available with a variety of different functionality also. The key things you need to think about when purchasing a phone system is not just the upfront costs of the equipment but also the ongoing costs of maintaining this, administration and of course call costs. Call costs are very competitive market which is good for consumers because it gives you the ability to shop around to see what is available and who has the best offer.
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