The NORTEL NETWORKS CallPilotvoice Model NTAB9865 is a reliable phone switching system designed for business and industrial offices. Developed by Nortel, a trusted brand in telecom systems, this CallPilot 100 model offers efficient communication solutions for any organization. With its advanced features and capabilities, the NORTEL NETWORKS CallPilotvoice system ensures clear and consistent communication within the office environment, making it a valuable asset for businesses looking to streamline their phone switching systems.