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. ➡ In preparation
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 ➡ In preparation