Communication terminal apparatus
AssigneeCanon Kabushiki Kaisha
InventorYukio Murata
Life of this patent
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Abstract
A communication terminal apparatus has an interface structure of nB+D (n.gtoreq.2, B: channel for transfer of user information, D: channel for transfer of control information) and is connected to a digital line network. A reception refusal for m (n.gtoreq.m) of the n user information transfer channels is registered. When the reception refusal has already been registered, the reception of the user information transfer channels of (n-m+1) or more is refused. Thus, inconvenience from all of the lines being in use for call reception and a new call generation cannot be performed, is prevented.
Claims8
A communication terminal apparatus connected to a communication network having a plurality of communication channels, said apparatus adapted to receive a plurality of calls, each call occupying one or more of the channels, said apparatus comprising:
- registering means for registering m (n.gtoreq.m) of the n channels as reception refusable channels;
- first detecting means for detecting an incoming call set to occupy one or more of the channels on the communication network;
- second detecting means for detecting, in response to detection of an incoming call by said first detecting means, a number of the channels currently occupied;
- reception refusing means for refusing reception of the incoming call when the detected number of the channels currently occupied is greater than or equal to (n-m+1);
- timer means connected to said reception refusing means for timing a period to provide a time value;
- and
- releasing means for, in response to the time value, releasing operation of said reception refusing means to allow reception of an incoming call.
A communication terminal apparatus connected to a communication network having a plurality of communication channels, said apparatus adapted to receive a plurality of calls, each call occupying one or more of the channels, said apparatus comprising:
- registering means for registering m (n.gtoreq.m) of the n channels as reception refusable channels;
- first detecting means for detecting an incoming call set to occupy one or more of the channels on the communication network;
- discriminating means for discriminating whether the incoming call includes a voice signal;
- second detecting means for detecting, in response to detection of the incoming call by the first detecting means, a number of the channels currently occupied;
- and
- reception refusing means for refusing reception of the incoming call when the detected number of the channels currently occupied is greater than or equal to (n-m+1), wherein said reception refusing means permits reception of the incoming call regardless of whether the detected number of channels currently occupied is greater than or equal to (n-m+1) when said discrimination means discriminates that the incoming call includes a voice signal.
A method of operating a communication terminal apparatus connected to a communication network having a plurality of communication channels, the apparatus adapted to receive a plurality of calls, each call occupying one or more of the channels, said method comprising the steps of:
- registering m (n.gtoreq.m) of the n channels as reception refusable channels;
- detecting an incoming call set to occupy one or more of the channels on the communication network;
- detecting, in response to detection of an incoming call, a number of the channels currently occupied;
- refusing reception of the incoming call when the detected number of the channels currently occupied is greater than or equal to (n-m+1);
- timing a period in connection with refusal of reception of the incoming call to provide a time value;
- and
- releasing, in response to the time value, operation of said reception refusing step to allow reception of the incoming call.
A method of operating a communication terminal apparatus connected to a communication network having a plurality of communication channels, the apparatus adapted to receive a plurality of calls, each call occupying one or more of the channels, said method comprising the steps of:
- registering m (n.gtoreq.m) of the n channels as reception refusable channels;
- detecting an incoming call set to occupy one or more of the channels on the communication network;
- discriminating whether the incoming call includes a voice signal;
- detecting, in response to detection of an incoming call, a number of the channels currently occupied;
- and
- refusing reception of the incoming call when the detected number of the channels currently occupied is greater than or equal to (n-m+1) wherein said refusing step permits reception of the incoming call regardless of whether the detected number of the channels currently occupied is greater than or equal to (n-m+1) when said discriminating step discriminates that the incoming call includes a voice signal.
Dependencies are inferred from the claim text.