NEC DSX 60 Button DSS Unit

The NEC DSX 60 Button DSS unit mounts firmly on to a 34 Button Display Telephone or a 34 Button Super Display Telephone and provides extra one touch functions for a busy operator attendant. the most commonly used functions used on a DSS unit is Busy Lamp Fields to see what is happening on telephones on the telephone network and to see what is happening on incoming telephone lines.
The NEC DSX DSS unit will not attach to a 22 Button Display Telephone