A multi line phone system has become so popular that there are quite a few companies who make varying models of this kind of system. Some companies manufacture these models with certain variations depending upon the need of the customer and his budget, of course.
It is therefore quite important for a customer to know what exactly he is looking for; without a clear knowledge of his need, he might end up buying something totally uncalled for. The most important things that need to be remembered are the actual size and scope of your business and the type of system; of course, you also need to remember the amount of money that you can afford to spend on your communication needs every month.
Business phone systems can be of different types. PBX, key systems and KSU-less systems are some that are manufactured. Unless you know that number of people who are going to use your phone system, it will surely not be an easy thing for you to estimate the amount of money that you could spend on a phone system.
Though a multi line phone system would be the best thing to go in for, you might realize that the initial cost of setting up the same is fairly high. You might wonder if it is really worthwhile spending a fairly large sum of money on a piece of equipment, the full potential of which might lie unused for a very long time.