Multi Line Phones for Small Office/Home Office | All these phones do not require a phone system to operate or special equipment. They can work as a single phone or you can add more stations one by one as long as they are the same model. This is a great cost effective way to run a small office or a home office. These phones are limited to the amount of lines they will accept and the amount of stations that you can add. If you need more lines or stations we would recommend looking at a full business phone system.