VTech CS6609. The VTech CS6609 is the accessory handset equipped with the latest DECT 6.0 digital technology which delivers increased clarity and enhanced security. This single-line operation phone is packed with the best VTech features and would make a great addition to the modern-day household. The CS6609 handset speakerphone makes hands-free conversations easy. One can store 50 names and numbers and 50 caller logs. Additional features include trilingual menu support any key answer selectable ringtones and a message waiting indicator. CS6609.