Dual-mode telephone possessing power-off escape function and capable of establishing tripartite conference

The utility model discloses a dual-mode telephone possessing a power-off escape function and capable of establishing a tripartite conference. An IP telephone module is respectively connected with a sound mixing circuit and a low-power-consumption MCU, and the IP telephone module is connected with an...

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Bibliographic Details
Main Authors WU LANG, LIAO YUN, WANG HUAHU
Format Patent
LanguageChinese
English
Published 06.08.2014
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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Summary:The utility model discloses a dual-mode telephone possessing a power-off escape function and capable of establishing a tripartite conference. An IP telephone module is respectively connected with a sound mixing circuit and a low-power-consumption MCU, and the IP telephone module is connected with an external power supply. The sound mixing circuit is connected with a dual-mode telephone speakerphone which is connected with the external power supply. The sound mixing circuit is also connected with a dual-mode telephone handle which is connected with a PSTN telephone wire. The sound mixing circuit is further connected with the PSTN telephone wire. A PSTN telephone module is respectively connected with the sound mixing circuit and the low-power-consumption MCU. The PSTN telephone module is connected with the PSTN telephone wire. A dual-mode telephone keyboard is connected with the low-power-consumption MCU. The dual-mode telephone possesses the power-off escape function so that a PSTN line and an IP line can be d
Bibliography:Application Number: CN2014275658U