ZTE Corp has achieved what it claims is the world’s first EV-DO Revision B (Rev B) VoIP call on its CDMA2000 system.

It is the first time in the industry that a CDMA vendor has achieved a 9.3Mbps download rate and 5.4Mbps upload rate.

EV-DO Rev B allocates flexible bandwidth and offers better Quality of Service (QoS) so improving user experience.

It is a telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access.

It was designed as an evolution of the CDMA2000 (IS-2000) standard that would support high data rates and could be deployed alongside a wireless carrier’s voice services.

ZTE has completed the first stage of achieving EV-DO Rev B and adopted 3-carrier bundling technology, with each carrier having a bandwidth of 1.25MHz.

Effectively, ZTE’s EV-DO Rev B upgrade’s EV-DO Rev A’s software with no additional hardware equipment required.

Both ZTE’s EV-DO Rev A and Rev B adopt an identical baseband chipset.

The company plans to commercialize its EV-DO Rev B system in Q3 2009.

In future, EV-DO Rev B can bundle up to a maximum of 15 carriers, with a download (forward) rate of 73.5Mbps and an upload (reverse) rate of 27Mbps.

Li Jian, general manager of CDMA Products for ZTE, said it had launched the world’s first EV-DO Rev.B technology several months ahead of its rivals.

"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," he said.

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