Handoff of dual mode mobile device between an IP network and a PLMN

Handoff of dual mode mobile device between an IP network and a PLMN

A device and a method for handoff of a VoIP internet telephone call from an IP network to a cellular network and for hand-back of the call to the IP network, in which during or after hand-off of the call an identifier of the hand-off call is obtained and stored and the identifier is used during hand...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CHOW KING WAI, WU WAI KEUNG
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A device and a method for handoff of a VoIP internet telephone call from an IP network to a cellular network and for hand-back of the call to the IP network, in which during or after hand-off of the call an identifier of the hand-off call is obtained and stored and the identifier is used during hand-back of the call to the IP network.