“What's the difference between the cs6509 and the cs6909? I have the cs6529-4unit. Need an extension cs6509. Please help asap. Thank You.”

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• Not sure of the difference but know the cs6909 Handset is meant to be registered with Base Models CS6948, CS6949 , CS6919 and CS6929. For more information go to the vtech web site to download manuals for your system.

  Answered by Vtechuser 8 years ago

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