DSX 22B Display Tel Multibutton Telephone User Guide – The Multibutton Telephone User Guide is  the guide shipped with each 22B Display Tel and 34-button 3-line display telephone.

DSX 22B Display Tel Feature Guide – This handbook provides a description and detailed operation chart for the NEC DSX 22B Display and NEC DSX 34B Display telephone features.

NEC Intramail Programming Guide – Use this handbook for a description and detailed operation chart for each DSX IntraMail voice mail feature.

NEC DSX Programming Manual – This manual covers every aspect of programming the NEC DSX telephone system.