-Single-Line Guestroom Telephone HAC/VC (ADA) Handset Volume Boost with 3 distinct levels EasyAccess Data Port ExpressNet-Ready Raised Red Message Waiting lamp MultiX Message Waiting Circuitry Advanced Microprocessor Technology Non-volatile EEPROM memory (requires no battery) Electronic Ringer Supports Full-length Paper Faceplate Desk or Wall Mountable Hidden Programming Button Textured Finish Resists Smudges & Scratches