Patent ID: 9247462
Filing Date: 2016-01-26
CPC Classification: H04L,H04W

Claim Text:
1. A multi-mode communication system including at least one internet protocol network, at least one mobile telecommunications network, a telecommunications platform and at least one multi-mode terminal, both said telecommunications platform and said at least one multi-mode terminal being connectable to said at least one internet protocol network and to said mobile telecommunications network, said system comprising: at least one voice continuity control module for ensuring call continuity for a call involving said at least one multi-mode terminal when connected to said at least one internet protocol network; wherein said system further comprises at least one voice quality control module for determining voice call quality of a call involving said at least one multi-mode terminal when connected to said at least one internet protocol network; wherein said at least one voice continuity control module operates to initiate handover between said at least one internet protocol network and said at least one mobile telecommunications network in accordance with a predetermined minimum voice quality level determined by said at least one voice quality control module; and wherein said telecommunications platform comprises a first voice quality control module and a first voice continuity control module and said multi-mode terminal comprises a second voice quality control module and a second voice continuity control module, said predetermined minimum voice quality of an ongoing call being determined by at least one of said first and second voice quality control modules and said handover being initiated by at least said first voice continuity control module.