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Telephone systems are devices from which a voice message will be converted to sound waves and into electrical signals that are passed through telephone lines and then converted again to sound waves for the other person at the end of the line to hear what has been said in the other side. These handsets are composed of earphones and mouthpieces with varying degrees of magnetism and are input to a transmitter.

 

Telephone systems rely on the dialing features of the phone unit and the signals are exchanged between one telephone subscriber to another through switching and transmitting.

 

Traditional telephone systems although they are still used today will require wires to be attached to the subscriber's home and then a telephone line is connected until it reaches the location of the telephone unit. There are innovations in the IP phone System such as the telephone lines where modern companies have opted to use the fiber optic technology and together with the telephone lines are internet connections from which you can be able to surf the net and download your favorite movies. These fiber optic lines offer clearer and faster data transfer so that you can be able to hear the person speaking on the other line like you are sitting beside each other. There are also modifications in the phone unit themselves, there are phone units that can detect the number of the caller called caller ID and most of the phone units now are wireless with messaging playback functions. Some even have video conversation features because they have 4G technology. In the past you need to connect to a network and have your telephone line attached.

 

Today with the advent of mobile phones, most people can just buy a sim card and a mobile phone then immediately start conversing with other people who have the technology, the traditional telephone companies also joined the bandwagon and started issuing phone cards that can connect to a local telephone line without additional charges. Previously when a phone line connects to a mobile phone, charges apply because it is more like calling to an international number but now, with the integration of some telecommunication companies, it is just as easy as dialing the number and calling your loved ones at home. Cisco Telephone system have a lot of upgrading to do and because of the increasing number of telephone subscribers, the need to keep up with the number of transactions from text messages to calls imposes a great deal of work for their servers and other equipment necessary to keep the lines open.