50334120 - Upgrade services of telephone switching equipment

CPV code 50334120 in the EU Common Procurement Vocabulary refers to Upgrade services of telephone switching equipment. It sits at level 6 of the CPV hierarchy as a subcategory within the 50 division. This code is nested directly under 50334100, narrowing the broader category into the specific area of upgrade services of telephone switching equipment. As a leaf code, 50334120 has no further subdivisions and represents the most precise classification available in this branch — buyers should reference it directly in tender notices when the procurement primarily concerns upgrade services of telephone switching equipment. Contracting authorities across the EU use 50334120 in TED notices and national procurement portals to signal that a tender relates to upgrade services of telephone switching equipment.