A:AnswerYou need to know the CS number of the handset shown with your question in order to make a match. if not available, contact vtech at www.vtechphones.com or call 1-800-595-9511. Hope this helps.
A:AnswerHi - The VTech CS5109 is not compatible with the CS6949. The accessory handset that will work with that base is the CS6909. Thank you for your interest!
A:Answerrick - CS5109 is an accessory handset only, and will not function unless registered to a compatible base model such as CS5119 or CS5129. Call Blocking is a feature of this series.