Nokia Siemens Networks rings up another first
Dec 11, 2009 ... The call conducted by Nokia Siemens Networks used a configuration of commercially ready LTE equipment fully 3GPP-compliant from end to end. ...
…the delivery of voice over LTE networks means operators will in the future be able to provide all services over the same all-IP network, driving down the expense of operating parallel legacy and LTE networks. …
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