We are able to through btcl open CLI & IGW CLI. Our ASR 35-45% ACD 7+ of BTCL CLI and ASR 50% ACD 8+ of IGW CLI stable line. Payment- prepaid. The rate for BTCL CLI $0.02043 and IGW white CLI $0.02114 @BDT 70/minutes. Contact- Kabir, 01914956062
SIP protocol was made within IETF (Internet Engineering Task Force) – organization occupied with establishing Internet standards and general standards concerning TCP/IP protocols.