Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-05-24
2005-05-24
Nguyen, Duc (Department: 2643)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S423000, C455S067110, C455S115100, C455S226100
Reexamination Certificate
active
06898426
ABSTRACT:
A mobile phone terminal includes a transmitting side speech signal path switch and receiving side speech signal path switch, and a general purpose USB port. The signal path switches are interposed between a speech coder/decoder and an A/D converter and D/A converter to enable a terminal acoustic evaluation signal to be input and output through a path different from that in a normal operation mode of the mobile phone terminal. The general purpose USB port is used for connecting the signal path switches with an external terminal unit so that the control signals of the signal path switches and a terminal acoustic test signal are transferred across these signal path switches and the general purpose USB port. The mobile phone terminal can mount the external connection port for the acoustic evaluation test more efficiently.
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“Digital Cellular Telecommunications System (Phase 2+); Individual Equipment Type Requirements and Interworking; Special Conformance Testing Functions” ETSI TS 101 293 v8.1.0 (Aug. 2000) 1999 pp. 1-41.
Mitsubishi Denki & Kabushiki Kaisha
Nguyen Duc
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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