Nortel Phone System
Nortel Norstar System 

877-648-3532

www.nhtelecom.com

Upgrading from earlier DR software to Compact DR5.1

A Compact DR1, DR2 to DR5 or DR 5.1 upgrade requires the installation of a new DR5 software cartridge and reprogramming of the system, but no additional hardware is required.
Compact DR5 is compatible with all M7000 terminals, including M7100 and Voice mail.