EP0282158A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Communication system
Assignee: Canon Inc
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Filing: 1988-02-03
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Granted: —
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Expires: 2008-02-03
Abstract
Abstract In a ISDN system in which a plurality of communication apparatus connected to a subscriber one line, each communication apparatus has detection means for detecting a call signal from the line to other communication apparatus and inform means for informing such call or means for altering such call to a call to its own apparatus.
Inventors
- 👤 Yukihiko Ogata
- 👤 Takuji Nakatsuma
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 23:01
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0435; H04Q11/0471; H04M; H04M1/00; H04M1/71; H04M1/715; H04Q2213/00; H04Q2213/097; H04Q2213/13096; H04Q2213/13097; H04Q2213/13209; H04Q2213/13299; H04Q2213/173; H04Q2213/18; H04Q2213/204
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
56 words
A communication apparatus used in a communication system wherein a plurality of communication apparatus are connected to at least one line, comprising: detection means for detecting a call signal from the line to other communication apparatus than its own apparatus; and inform means for informing the call in accordance with the detection by said detection means.
Claim 2
Dependent Claim
56 words
A communication apparatus used in a communication system wherein a plurality of communication apparatus are connected to at least one line, comprising: detection means for detecting a call signal from the line to other communication apparatus than its own apparatus; and inform means for informing the call in accordance with the detection by said detection means.
Claim 3
Dependent Claim
18 words
A communication apparatus according to Claim 1 wherein said inform means includes display means for displaying the call.
Claim 4
Dependent Claim
19 words
A communication apparatus according to Claim 1 wherein said inform means generates an alarm sound to indicate the call.
Claim 5
Dependent Claim
45 words
A communication apparatus according to Claim 1 further comprising response detection means for detecting whether the called communication apparatus has responded to the call or not, wherein said inform means stops to inform the call in accordance with an output from said response detection means.
Claim 6
Dependent Claim
16 words
A communication apparatus according to Claim 1 wherein said line has a plurality of communication channels.
Claim 7
Dependent Claim
25 words
A communication apparatus according to Claim 1 further comprising means for altering a call to other communication apparatus to a call to its own apparatus.
Claim 8
Dependent Claim
58 words
A communication apparatus used in a communication system wherein a plurality of terminals are connected to at least one line, comprising: detection means for detecting a call from the line to other terminal; alter means for altering the call from the line to said other terminal detected by said detection means to a call to its own terminal.
Claim 9
Dependent Claim
58 words
A communication apparatus used in a communication system wherein a plurality of terminals are connected to at least one line, comprising: detection means for detecting a call from the line to other terminal; alter means for altering the call from the line to said other terminal detected by said detection means to a call to its own terminal.
Claim 10
Dependent Claim
26 words
A communication apparatus according to Claim 7 wherein said alter means alters an address of its own terminal to an address of said called other terminal.
Claim 11
Dependent Claim
24 words
A communication apparatus according to Claim 7 further comprising inform means for informing the call in accordance with the detection by said detection means.
Claim 12
Dependent Claim
62 words
A communication system comprising: a plurality of communication apparatus; and connection means for controlling connection of said plurality of communication apparatus to at least one communication line; said communication apparatus each including detection means for detecting a call signal from said line to other communication apparatus, and inform means for informing the call in accordance with the detection by said detection means.
Claim 13
Dependent Claim
62 words
A communication system comprising: a plurality of communication apparatus; and connection means for controlling connection of said plurality of communication apparatus to at least one communication line; said communication apparatus each including detection means for detecting a call signal from said line to other communication apparatus, and inform means for informing the call in accordance with the detection by said detection means.
Claim 14
Dependent Claim
30 words
A communication system according to Claim 10 wherein said communication apparatus each includes alter means for altering the call to other communication apparatus to a call to its own apparatus.
Claim 15
Dependent Claim
26 words
A communication system according to Claim 11 wherein said alter means alters an address of its own apparatus to an address of the called communication apparatus.
Claim 16
Dependent Claim
49 words
A communication system according to Claim 10 wherein said communication apparatus each includes response detection means for detecting whether the called communication apparatus has responded to the call or not, and said inform means stops to inform the call in accordance with the output from said response detection means.
Claim 17
Dependent Claim
45 words
A communication apparatus used in a communication system wherein at least one line is shared by a plurality of communication apparatus, comprising: discrimination means for discriminating status of said line; and output means for outputting the discrimination result by said discrimination means as sound data.
Claim 18
Dependent Claim
45 words
A communication apparatus used in a communication system wherein at least one line is shared by a plurality of communication apparatus, comprising: discrimination means for discriminating status of said line; and output means for outputting the discrimination result by said discrimination means as sound data.
Claim 19
Dependent Claim
21 words
A communication apparatus according to Claim 14 wherein said output means outputs the status of the line as a voice message.
Claim 20
Dependent Claim
21 words
A communication apparatus according to Claim 14 wherein said output means outputs the status of the line as a signal tone.
Claim 21
Dependent Claim
57 words
A communication terminal used in a communication system wherein at least one line is shared by a plurality of communication terminals, comprising: detection means for detecting status of the line; indication means for indicating a communication request; and inform means responsive to the communication request indication for informing availability of the line when the line is available.
Claim 22
Dependent Claim
57 words
A communication terminal used in a communication system wherein at least one line is shared by a plurality of communication terminals, comprising: detection means for detecting status of the line; indication means for indicating a communication request; and inform means responsive to the communication request indication for informing availability of the line when the line is available.
Claim 23
Dependent Claim
28 words
A communication terminal according to Claim 17 wherein said inform means determines whether the line is available or not and informs the availability when the line is available.
Claim 24
Dependent Claim
32 words
A communication terminal according to Claim 18 wherein said inform means monitors the status of the line when the line is not available, and informs the availability when the line becomes available.
Claim 25
Dependent Claim
29 words
A communication terminal according to Claim 18 wherein said line has a plurality of communication channels, and said inform means informs the availability of said plurality of communication channels.
Claim 26
Dependent Claim
19 words
A communication terminal according to Claim 17 wherein said inform means informs the availability of the line by sound.
Claim 27
Dependent Claim
70 words
A communication apparatus comprising: destination designation means for designating a destination station having a plurality of communication terminals connected to at least one line; terminal designation means for designating a communication terminal of the destination station designated by said destination designation means; and means for permitting only the designation of the destination by said destination designation means when the communication terminal designated by said terminal designation means does not respond.
Claim 28
Dependent Claim
70 words
A communication apparatus comprising: destination designation means for designating a destination station having a plurality of communication terminals connected to at least one line; terminal designation means for designating a communication terminal of the destination station designated by said destination designation means; and means for permitting only the designation of the destination by said destination designation means when the communication terminal designated by said terminal designation means does not respond.
Claim 29
Dependent Claim
23 words
A communication apparatus according to Claim 22 wherein said destination designation means designates the destination by sending address data of the destination station.
Claim 30
Dependent Claim
32 words
A communication apparatus according to Claim 23 wherein said terminal designation means designates the terminal by sending the address data of the destination station together with data inherent to the communication terminal.
Claim 31
Dependent Claim
45 words
A communication apparatus connected to a communication line having a plurality of communication channels, comprising: discrimination means for discriminating status of each of said communication channels; and display means for displaying use status of the line in accordance with the discrimination by said discrimination means.
Claim 32
Dependent Claim
45 words
A communication apparatus connected to a communication line having a plurality of communication channels, comprising: discrimination means for discriminating status of each of said communication channels; and display means for displaying use status of the line in accordance with the discrimination by said discrimination means.
Claim 33
Dependent Claim
21 words
A communication apparatus according to Claim 25 wherein said display means displays the use status of each of said communication channels.
References Cited (Backward Citations)
No citation records indexed.
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