If you are working for a company that is thinking of or needing a new phone system. You may want to consider VOIP phone system. VoIP phones and systems have many benefits that your standard analogue phone system. For instance they are fair easier to install and configure than a standard phone system. Also you have the benefits of easier management, because of web based configuration interfaces. Also with a VOIP system, unlike the standard phone systems.
You do not require separate wiring for the phone system, it can be integrated into your existing network infrastructure. A user can take their existing phone handset, plug it into the nearest network port and keep their existing number. It can also even allow you easier management of your network and phone system as both the user and PC can be on the same network connection saving on all the separate cabling for the phone system. VOIP phones also allow for easy user roaming, calls can be diverted to anywhere else in the world due to the SIP protocol characteristics used. VOIP also has the benefit of allowing greater expansion, whereas the standard analogue systems will require additional phone system modules that can be extremely expensive.