Telecommunications – Radiotelephone system – Special service
Patent
1996-06-24
1999-10-12
Urban, Edward F.
Telecommunications
Radiotelephone system
Special service
455417, 455466, 379211, H04Q 720
Patent
active
059666536
ABSTRACT:
A request for call forwarding activation along with forward-to-number is received from a mobile station via one of the data channels such as a Stand-alone Dedicated Control Channel (SDCCH). The activation request itself is transported by an Unstructured Supplementary Service Data (USSD) message. The serving mobile switching center (MSC) analyzes the forward-to-number and establishes a speech connection with the mobile station by calling back the mobile station. Next, the MSC originates an outgoing call towards the forward-to-number and, as a result, establishes a speech connection between the mobile station and the telephone terminal associated with the forward-to-number. By establishing a speech connection between the two parties, the mobile subscriber requesting the call forwarding activation can verbally verify the forward-to-number. As an alternative, TCAP messages can be communicated between the serving MSC and the local exchange serving the forward-to-number to request the local exchange to verify the validity of the forward-to-number.
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Bhatia Ranjit
Boltz David
Joensuu Erkki
Mills James L.
Valentine Eric
Ericsson Inc.
Gesesse Tilahun
Urban Edward F.
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