Comdial Executech 2000 E80PT Key Service Unit (Refurbished)The ExecuTech 2000 telephone system is an expandable communications system that provides dozens of different features and programming options. We have designed the system so that you, the installer, can customize the operations to fit each customer's individual telephone needs. Each system consists of Hardware and Software. The common equipment cabinet and telephones, for example, are considered hardware. The software determines what functions you can