The NEC A50030650002 is a DESI (Direct Extension Station Identification) label strip designed for use with the NEC SL1000 12-button digital telephone handsets. This paper label insert allows users to identify programmable function keys on the telephone, providing clear labelling for speed dials, line appearances, and feature buttons.
This DESI strip is specifically designed for the NEC SL1000 business communications system, a compact PBX platform aimed at small to medium-sized enterprises. The label format accommodates the 12-button layout of compatible SL1000 digital handsets, ensuring proper alignment with the function keys.
The NEC SL1000 system, while still deployed in many business environments, represents NEC’s legacy SME telephony portfolio. DESI strips remain essential consumables for maintaining clear telephone key identification, particularly in environments with high staff turnover or frequently changing extension assignments.
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