In an announcement from Plantronics the Polaris line of headsets will be discontinued in August 2008. This line was initially designed for Northern Telecom phones and the purchase of a Polaris headset included a bottom cable instead of needing an amplifier. Without an amplifier, you saved money and space on your desk. Other phone manufacturers such as GE, Mitel, NEC, Polycom and Toshiba migrated to this headset solution as well. Going forward after August 2008, you will need to use the standard Plantronics H-series headset with an A10 bottom cable (66268-02). Same result and function at the Polaris solution, but now by using the standard headsets, they will be much more readily available.