Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
A communication terminal apparatus for use in a communication system in which at least one line having a plurality of channels is used by a plurality of communicaiton apparatuses, said communication terminal apparatus comprising: monitoring means for monitoring the not-in-use condition of information channels when all the information channels are engaged; and call originating means for originating a call when said monitoring means detects the not-in-use condition.
Claim 2
Dependent Claim
67 words
A communication terminal apparatus for use in a communication system in which at least one line having a plurality of channels is used by a plurality of communicaiton apparatuses, said communication terminal apparatus comprising: monitoring means for monitoring the not-in-use condition of information channels when all the information channels are engaged; and call originating means for originating a call when said monitoring means detects the not-in-use condition.
Claim 3
Dependent Claim
75 words
A communication terminal apparatus according to Claim 1, wherein said communication terminal apparatus is connected to a subscriber's line of an ISDN system, communication being effected by using B channels; if all the B channels are found to be busy upon origination of a call, the not-in-use condition of a B channel is monitored from the contents of a D channel, and when said B channel is not in use, a call is originated again.
Claim 4
Dependent Claim
39 words
A communication terminatl apparatus according to Claim 1, wherein means for inputting a request for call origination is provided, and when said request for call origination is input, said monitoring means monitors the not-in-use condition of said information channels.
Claim 5
Dependent Claim
51 words
A communication terminal apparatus according to Claim 3, wherein said monitoring means sends a call origination signal to a line in response to said request for call origination, discriminates a response signal from said line with respect to said call origination signal, thereby monitoring the idle state of said information channels.
Claim 6
Dependent Claim
28 words
A communication terminal apparatus according to Claim 4, wherein said monitoring means repeatedly sends said call origination signal until the not-in-use condition of said information channel is detected.
Claim 7
Dependent Claim
16 words
A communication terminal apparatus according to Claim 1, wherein said line is a digital communication line.
Claim 8
Dependent Claim
60 words
A communication terminal for a communication system in which at least one line having a plurality of channels is used by a plurality of communication apparatuses characterised in that the terminal has means to monitor the condition of the information channels when all the information channels are in use, to detect when not all the information channels are in use.
Claim 9
Dependent Claim
60 words
A communication terminal for a communication system in which at least one line having a plurality of channels is used by a plurality of communication apparatuses characterised in that the terminal has means to monitor the condition of the information channels when all the information channels are in use, to detect when not all the information channels are in use.