Smooth cooperation between PSTN (Public Switched Telephone Network) and PLMN (Public Land Mobile Network) networks is one of the issues in telecommunications. The Siemens integrated solution is based on introducing GSM mobility capabilities to the fixed network exchange, thus making full use of existing network infrastructures. For the end user it provides the convenience of being accessible under one number at one or more terminals independent of his location and having access to a consistent set of services.
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