2.5mm jack curly clable with Plx QD "Works with Ciso SPA Series and other Cordless phones with 2,5mm Standard Headset Port.(3 poles with 2 black bands), No Smart phone use. Works with Grandstream ...

This score reflects the tested distance a phone can maintain an intelligible conversation, make a call and receive a call. We report a score instead of a distance because range can differ greatly ...

This score reflects the tested distance a phone can maintain an intelligible conversation, make a call and receive a call. We report a score instead of a distance because range can differ greatly ...