INTER-TEL 550.8520 STANDARD DISPLAY SPEAKERPHONE

Includes two-line x 16-character alphanumeric Liquid Crystal Display (LCD)
Enables the programming of feature keys
Allows you to answer intercom and outside calls in hands-free mode
Provides up to eight levels of volume for speaker, ringers and handset
Performs a self-test to check all keys, lamps and LCD
Optional PC Data Port Module (PCDPM) provides a serial port connection for a DSS/BLF unit, PC/output device or Computer Telephony applications requiring a desktop OAI connection
Optional Modem Data Port Module connects to the PCDPM and provides an analog phone adapter