NSN offers enhanced voice quality on GSM

Nokia Siemens Networks conducted pre-commercial call test with the help of Orthogonal Sub-Channel Dual Full Rate (OSC-DFR) software feature for GSM networks. With this feature, GSM operators can avail better voice capacity and speech quality. Operators who have deployed the Adaptive Multi Rate-Full Rate (AMR FR) can now avail OSC-DFR feature on their network. Nokia Siemens Networks' new GSM feature will be used in customer pilots from the end of June 2011.

“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. He added, “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.”