The Communication Department at HQ NAVDOC is head by Ag Command Communication Information and Technology Officer (CCITO), the department oversees the receiving and transmitting of signals, and conducting Navy ceremonies. Additionally, the Department conducts routine trainings for personnel on communication-related matters. Other key responsibilities include managing the Command's communication systems and networks, including voice, data, and video communication systems.

The Department is also responsible for managing the Command's IT system, implementing and overseeing cybersecurity measures, developing and implementing IT policies and guidelines, managing IT projects, providing technical support, conducting IT training programs, and coordinating the integration of different IT systems. Furthermore, the department manages the Command's IT assets, including hardware, software licenses, and equipment. Beyond these primary functions, the Department diligently accomplishes other assigned duties to support the operational effectiveness and efficiency of HQ NAVDOC.