Old Gen Intercom Phones
At one time, people could buy intercom phone systems with only two-line capabilities. Today, a person can purchase an intercom phone system with multi-line capability up to 100. If the person operates a large company, the 100-phone line capability could come in handy. Likewise, at one time the person could only purchase cord intercom phone systems. Today, however one can purchase cord, cordless, or combination phone systems.