Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent
1991-12-30
1994-01-04
Kuntz, Curtis
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of subscriber loop or terminal
379 14, 379 15, H04M 322
Patent
active
052767272
ABSTRACT:
A method and device for maintaining a PBX system by connecting the PBX system with a remote maintenance center 220 through a public switch telephone network (PSTN), a method for transmitting a state information of the PBX system to the remote maintenance by connecting a remote maintenance connection circuit automatically in case of the PBX system receiving an incoming call from the remote maintenance center, and a MODEM control circuit 302 for communicating the state information with an external device 220 by utilizing the MODEM 303 built in the system without using a separate port, are disclosed.
REFERENCES:
patent: 4972453 (1990-11-01), Daniel, III et al.
Cho Seung-Hwan
Jeong Chang-Lae
Kim Yang-Seon
Bushnell Robert E.
Kuntz Curtis
Loomis Paul
Samsung Electronics Co,. Ltd.
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