Telephone system and terminal device therein

Details Telephone system and terminal device therein Telephone system and terminal device therein

2009-04-07

2010-12-28

Kuntz, Curtis (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S389000, C370S401000, C370S338000, C370S400000, C370S356000, C379S106030, C379S242000, C379S009040

Reexamination Certificate

active

07860082

ABSTRACT:
According to one embodiment, a telephone system comprises a plurality of terminal devices and a main unit. The terminal device realizes telephone communication via a packet-switched network. The main unit accommodates the terminal devices via the packet-switched network. Each of the terminal device comprises an update module, a storing unit, a read module and an access module. The update module updates firmware functioning inside the device in accordance with an instruction from the main unit. The storing unit stores access information for accessing an ante-unit, to which the terminal device is currently connected, before update of the firmware. The read module reads the access information from the storing unit after update of the firmware if an post-unit to which the terminal device is to be connected under the updated firmware differs from the ante-unit. The access module which accesses the ante-unit by using the read access information.

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