SIP protocol was made within IETF (Internet Engineering Task Force) – organization occupied with establishing Internet standards and general standards concerning TCP/IP protocols.
Kasamore
Kasamore is the prepaid calling card service that gives you big savings on calls to friends and family around the world. With great low international rates to over 250 countries, all you expect and more!!!
Use Kasamore calling card from any phone: hom
Top countries:
United States 1294
India 440
United Kingdom 425
Canada 348
Bangladesh 338
China 142
Pakistan 134
Australia 133
Spain 123
Russia 114View all countries