The most universally compatible solution for corded desk phones is the Plantronics M22 Vista amplifier paired with any Plantronics H-series headset. In most cases, the M22 Vista connects through your phone's handset receiver port via a short modular cord (included). The M22 comes with a 10 ft. coiled cord that features QuickDisconnect at the end. All of the H-series headsets feature the reciprocating end of the QuickDisconnect, which snaps together with the M22 cord. Both the M22 Vista and the H-series headsets are covered by a 2-year factory warranty. CLICK LINKS BELOW: