Features Cortelco Medallion 2-line corded telephone Caller ID, call waiting caller ID 100# Caller ID memory (E2PROM design) Electronic 3-line LCD LCD contrast adjust LCD super twist (rotates forward) Trilingual menu Icons: new call, repeat call, forward call, toll call, blocked call, unknown call, and message waiting Displays caller name, phone number, and time/date Real time clock Call timer Message waiting light works off Sutter, FSK, 90 Volt, and 24 Volt Mute with LED DTMF dialing Electronic hold with extension release On hook predial Directory name match 10 Direct dial memories (up to 24 digits) Programmable flash Last 10# redial 5 Selectable ringer cadences 8-Step ringer volume control 4-Step receiver volume control Data port Tone/pulse switchable Headset jack 6 Programmable area codes Speakerphone Wall mountable Displays active line Conference Charcoal gray ITT3220CH