According to Nice classification heading for class 38 states Telecommunications and related services are include in Class 38. The heading gives you a brief broad overview about what exactly is including in a particular class.
Class 38 includes mainly services allowing at least one person to communicate with another by a sensory means. Such services include those which: (1) allow one person to talk to another, (2) transmit messages from one person to another, and (3) place a person in oral or visual communication with another (radio and television). This Class includes, in particular: – services which consist essentially of the diffusion of radio or television programmes. This Class does not include, in particular: – radio advertising services (Cl. 35); – telephone marketing (telemarketing) services (Cl. 35).