VTech UP407 ErisBusinessSystem™ The VTech UP407 is an Extension Headset, which requites UP416 Main Console to operate. You can register only one UP407 Cordless Handset to a UP416 Console or a UP406 Deskset. Only one device with the same extension can be used at a time. The ErisBusinessSystem™ four line operation phone is packed with the best VTech features and manage calls from 1-4 telephone lines simultaneously. The UP407is a full-duplex speakerphone that can keep up with your calls and increase participation by allowing parties on both ends to speak and be heard at the same time. One can store 50 names and numbers and 200 call history. Additional features include 3 languages LCD prompt, One-touch setting, hearing aid-compatible and auto line selection. UP407 Features Handset Speakerphone 8 Level LCD Contrast 200 Station Name / Number Caller ID Memory 50 Station Phone Directory / Dialer Redial 10 Selectable Ringtones 6 Level Handset Volume Control Trilingual Menu Support English / Spanish / French New DECT 6.0 Technology Interference Free Communication Increased Clarity / Enhanced Security Wider Range / Network Friendly 1.9GHz Extra Handset / Charger Dedicated for Cordless Phones by the FCC 30% Battery Life Increase Over 5.8GHz Speakerphone Volume Control Mute Intercom 3-Way Conferencing Auto Line Selection Predial Flash Clock Date Display Hearing Aid Compatible Wall Mountable/Mount Included Up To 7 Days Standby Up To 7 Hours Talk Time 4-Line Operation Cordless Phone