Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy
Patent
1991-10-10
1994-11-29
Kuntz, Curtis
Telephonic communications
Telephone line or system combined with diverse electrical...
To produce visual-graphic copy
379215, 358437, H04M 1100
Patent
active
053696883
ABSTRACT:
When an interrupt completion detecting unit detects completion of an interrupt processing, a hooking unit executes hooking automatically. A busy tone detecting unit judges whether or not a station of a suspended telephone communication has been holding the telephone circuit. If not, a call is directed to the suspended station on the basis of stored information on its dialing number. At the same time as the hooking is executed, an on-hook judging unit judges whether or not a handset at the own station is in an on-hook state. If it is on the hook, a predetermined processing for urging an operator to lift the handset is executed. This processing selectively causes ringing of a bell incorporated in a telephone unit or of a buzzer, or indication by a display unit or a lamp. With the above procedure, the telephone communication with the suspended station can automatically be restored in accordance with the situations at the suspended and own stations.
REFERENCES:
patent: 4991203 (1991-02-01), Kakizawa
patent: 4995073 (1991-02-01), Okata et al.
Fukao Tomoo
Hosaka Ryuji
Kido Naoharu
Suto Naoki
Tsukamoto Kazuyuki
Fuji 'Xerox Co., Ltd.
Kuntz Curtis
Woo Stella L.
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