Class Business Set with Caller ID Comptibility - 25 NAME/NUMBER CALLER ID MEMORT (CLASS AND Centrex) - ON-HOOK DIAL - Large, Tiltable LCD Display (Caller ID Log, Feature Operation, Call Duration, Dialing Directory) - PBX, CENTREX, or Single Line Compatible - CLASS and Voltage Message Waiting Indicator - Hold - 10 Programmable Memory Keys (for feature-access or auto dialing) - LINK (Flash) - Desk/Wall - CLASS Service Compatible - ADA Compliant - Scroll and Release Keys - Programmable Call Timer - Parallel Line Jack (Dataport) - Multi-funciton Indicator Light (Ring Hold, Extension in use) - Receiver Volume Control - Redial - Hold