Nokia Siemens Networks says that it has conducted the world's first pre-commercial call, exploiting its Orthogonal Sub-Channel Dual Full Rate (OSC-DFR) software feature for GSM networks.
With this feature, GSM operators can enjoy the twin benefits of up to a doubling of network voice capacity and significantly enhanced speech quality.
"The new feature builds on our OSC innovation of 2009, and extends its capabilities by offering better speech quality along with an increase in voice handling capacity," said Kimmo Virkki, head of GSM product management at Nokia Siemens Networks.
"OSC-DFR can reduce capital and operations expenditure for operators as it requires fewer carrier units and base station sites as well as less transport capacity. Moreover, the OSC-DFR feature allows operators to accommodate more voice and data traffic into the existing spectrum, thus facilitating the reuse or refarming of 3G/LTE services in GSM frequency bands."
Operators who have deployed the commonly used Adaptive Multi Rate-Full Rate (AMR FR) in their networks will be able to upgrade to the OSC-DFR feature. Customer pilots are expect to start from the end of this month.
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