XBLUE X16 Cordless Telephone Module 1645-00 for Connecting Standard Cordless Telephones to the X16 Digital Phone System Enables Standard Cordless Telephones To Be Added To The X16 Digital System Other Standard Phone Types Such As Conference Room Speakerphones May Also Be Connected Telephone Users Can Answer, Originate, Transfer And Put Calls On Hold Each Connected Telephone Has It's Own System Extension Number & Voice Mail Box Simple, Do It Yourself Installation with Standard Telephone Jacks