The museum's communications heritage is the area responsible for managing, preserving and studying the museum heritage and ensuring its use for the purposes of dissemination and promotion, namely exhibitions.

The heritage entrusted to the Foundation, which is the property of the founding institutions (CTT – Correios de Portugal, PT – Portugal Telecom and ICP – ANACOM), comprises artifacts that witness the evolution of the equipment, techniques and systems used in comunications, and the post and telecommunications sector in particular.