Handset Lifter Accessory: Base Requirements
works on most of our Cordless and wirelss units. W0100, W0200, W0350, W0300, A20, S20, CS70, CA10, CS10, CS55, CA20, CS50, Voyager 510s, CS70, CS70N CS351, CS351N, CS361, CS361N and CA40. Avaya Series ~ LKA10, AWH54, AWH55, ABT-35 and ABT-34. Please note some Avaya phones may not need the lifter.