The NEC XN120 telephone system is no longer in production and used or refurbished parts are difficult to obtain. It is strongly recommended that it is replaced with a new modern system.
How to use and operate your NEC XN120 telephone system. Some of these instructions apply to all NEC XN120 telephone systems; some are dependent on how your system has been configured for your particular business requirements.
Problems with the NEC XN120 telephone system that will cause it either to stop working completely or to cause severe problems with its operation.
Many telephone systems show the date and time on the display of system phones. This article explains how to set the date and time on NEC XN120 telephone systems.
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