Free In-Network Calling
Calls within the operator’s network are absolutely free of charge.
Works on defining new network architecture are carried out by such
organizations as ITU-T, Multiservice Switching Forum, and International
Packet Communications Consortium.
Citel Technologies Inc.
Citel''s Portico TVA enables organizations to deliver high-value Voice over IP features and applications to digital and analog PBX telephones already working and in place over existing infrastructure. Enterprises avoid the need for expensive network asses
Read moreTop 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