HOMEVoIP (Voice over IP)Expansion Module for Yealink SIP-T46G and SIP-T48G UC SFB models EXP40 SFB Yealink 6-14328 Expansion Module for Yealink SIP-T46G and SIP-T48G UC SFB models EXP40 SFB SKU #6-14328 Oh oh! That product is no longer available... Check out these alternatives Jabra 14101-19/1 Jabra Pro 9400/900 Leatherette Ear Cushions (2 pack) Details Jabra 14201-10 DHSG EHS Cable Details Jabra 14207-39 Jabra Evolve 65 Charging Stand Details Jabra 14401-15 Engage 65 Stereo Wireless Headset (only), DECT, No Stand Details VIEW ALL VoIP (Voice over IP)