Best 5 Plantronics/Headsets Direct Accessories – January 2012 1) 66268-03 – The A10 direct connect cable is an economical way to connect H series headsets to certain telephones that have an RJ9 headset jack, such as Nortel, Mitel and NEC. Please contact our sales team at 800-914-7996 to determine if your phone can use one. 2) HL10 – Tired of being stuck to your phone, even with … Continued