Yealink Replacement Handset Accessory for T54W, T53, T53W, T54S, T52S, T58A Telephone - Spare Made For Audio Specifications of Yealink VoIP Desk Phones. Plug n Play into the Yealink handset port. Replacing your old worn out handset with a replacement handset will fix common audio problems including: No Sound from Handset, Bad Audio Reception in Receiver; RJ-9 Port Pins Wornout on Handset; Damaged or blocked mic in handset; Crackling or Static in Earpiece receiver. Make sure that you also replace the spiral cord connecting to the handset. And always use original Yealink Accessories to ensure you have the gear that meets the audio and electrical current specifications of your phone. The bundle includes: Yealink Replacement Handset, Global Teck Microfiber Cloth, Yealink Start Guide