The Business Phone E VS Series Model S was a high-performance business phone system suitable for a select-workers office or a building used both as a residence and a store. The system could accommodate up to 16 units using six lines. Telephone sets available include the display-equipped type serviceable even at a power failure and the display-equipped type with call traffic and volume control functions. These telephone sets could make up a flexible system using diversified functions and a variety of options available, such as abbreviated dialing for up to 100 numbers and ring tone switching for incoming calls.