ZTE Makes First VoIP Call on EV-DO Revision B Network

China's ZTE says that it has achieved the world's first EV-DO Revision B (Rev.B) VoIP Call on its CDMA2000 system. The company has completed the first stage of achieving EV-DO Rev.B and adopted 3-carrier bundling technology, with each carrier having a bandwidth of 1.25 MHz. Compared with mature commercial EV-DO Rev.A, what ZTE's EV-DO Rev.B does is to only upgrade EV-DO Rev.A's software, with no additional hardware equipment required. Both ZTE's EV-DO Rev.A and Rev.B adopt identical baseband chipset.

"In order to meet customers' demand in addressing advanced network evolution, we launch the world's first EV-DO Rev.B technology several months ahead of our rivals," said Li Jian, General Manager of CDMA Products, ZTE Corporation. "We are committed to the industry and continue to invest and speed up large-scale commercial use of EV-DO Rev.B to leverage telecom operators' investment in EV-DO Rev A networks."

ZTE plans to commercialize its EV-DO Rev.B system in Q3 2009, reaffirming its leading position in EV-DO technology development.

In future, EV-DO Rev.B can bundle up to a maximum of 15 carriers, with a download (forward) rate of 73.5 Mbps and an upload (reverse) rate of 27 Mbps. Among the unique features of EV-DO Rev.B include allocating flexible bandwidth and offering better QoS, hence enhancing user experience.