Since the telephone numbers can no longer be bound to a certain network, the telephony providers must ensure the users’ information on the network of each telephone number and the tariffs charged for calls to the respective number.
The operators must make available such information, free of charge, by:
• the Customer Service, 24/24, 7/7
• posting the tariffs on their website
• other means (e.g., by SMS)
Moreover, ANCOM imposed on the providers that apply different tariffs depending on the call destination network the obligation to insert, at least for the ported numbers, free of charge, a distinctive beep sound, warning the users that the respective call is terminated in a different network. In such cases, when calling a ported number, while connecting the call, you will hear this beep sound.