Shuiping Long

User equipment, call continuity application server, and network handover method

User facility, voice call continuous application server and network switch method

Control method for call switching, communication system and user device

A user device, a call continuity application server and a network switch method

Call switching control method, communication system and user equipment

Call switching control method, communication system and subscriber device

A call handoff control method, user device, voice call continuity server and communication system for prodiving voice call continuity

Dispositif utilisateur, serveur d'application de continuité d'appel et procédé de commutation de réseau

Steuerungsverfahren für anrufübergabe, benutzergerät, sprachanrufkontinuitätsserver und system zur bereitstellung von sprachanrufkontinuität Control method for call handover, user device, voice call continuity server and system for provision of voice call continuity

Steuerungsverfahren, Kommunikationsanordnung und Benutzergerät für Anrufübergabe