Because of using the "Voice over IP 050" service, domestic and international calling rates are much cheaper than calling directly by regular sims.
➞To see the list of calling rates and country codes, click HERE.
However, it has one limitation that it can not call emergency numbers using conventional terrestrial satellite transmissions such as Fire/Ambulance (119) or Police (110), etc. The "VoIP 050" service will also restrict voice calls to Navigation dial numbers.
➞ To see the list of non-accessible numbers, click HERE