Free In-Network Calling
Calls within the operator’s network are absolutely free of charge.
SIP protocol was made within IETF (Internet Engineering Task Force) – organization occupied with establishing Internet standards and general standards concerning TCP/IP protocols.
TSSi VoiceCentricity Solutions
Since 1998, providing the expertise in Voice over IP, Hosted and Enterprise Class network services to provide complete, cost-effective solutions for your telecommunications and services. With in-house systems or our hosted solutions "NPS and VoiceCentrici
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