Testing and complaint accepting communication unit

Details Testing and complaint accepting communication unit Testing and complaint accepting communication unit

1994-11-01

1997-01-21

Chin, Wellington

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Of centralized switching system

379 9, 379 27, 379 17, 370248, H04M 129, H04M 308, H04J 116, H04J 314

Patent

active

055966233

ABSTRACT:
A communication box which operates as a testing and complaint accepting communication unit and which is connected with a workstation which can communicate with a call processor for controlling a digital switch module includes a subscriber line interface connected with a subscriber line from a subscriber line circuit for transmitting/receiving speech signals to/from another telephone connected with one exchange, an inter-office interface connected with an inter-office communication line from an inter-office communication trunk unit for transmitting/receiving speech signals to/from another exchange, and a telephone circuit which connects a head set for talking to allow to select a line of either interface and to call and communicate with either interface under control from the workstation and to communicate or to test a speech condition defined by speech signals monitored at the head set.

REFERENCES:
patent: 4945554 (1990-07-01), Krause et al.
patent: 5003573 (1991-03-01), Agah et al.
patent: 5111497 (1992-05-01), Blivena et al.
patent: 5416825 (1995-05-01), Renaer et al.
patent: 5428661 (1995-06-01), Hayashi

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