Easily connect a Plantronics H-series headset to most headset-ready phones via the headset port with the A10 cable.Highlights:- Refer to compatibility guide as the A10 should not be used if the compatibility guide calls for HIS, HIC, HIP, U10 (CIS) or U10P cable with H top. Otherwise using an H-series headset with the A10 cable is equivalent to a Polaris solution (with the exception of RNA support).