Abstract: A client transmits only job information of print data to a server, the server manages a print order in accordance with the job information, and if printable, the client transmits the print data directly to a printer. After the print is completed, the printer notifies the server of a print completion, and upon reception of this print completion notice, the server instructs the client to delete the print data. In a print system on a network configured as above, the network traffic is not increased, a large memory capacity is not necessary for the server so that the server load is reduced, the job management of the server can be performed by the client, the completion of a print operation can be monitored, and a print operation is possible even if the server is in an error state.

Abstract: In a communication system having a plurality of communication apparatus connected to at least one line, each communication apparatus has detection circuitry for detecting a call signal from the line to other communication apparatus and inform circuitry for informing such call or circuitry for altering such call to a call to its own apparatus.

Abstract: In a communication system having a plurality of communication apparatuses that are connected to one line, each communication apparatus has a detection circuit for detecting a call signal from the line to another communication apparatus connected to the line. Each communication apparatus also has a circuit that informs the operator at the communication apparatus of such call signal or a device for altering such call signal to a call signal to the communication apparatus itself.

Abstract: A communication apparatus sends the address data of a destination, with or without sub-address data, to a digital line. The destination itself has at least one communication terminal capable of being specified, and the sub-address data corresponds to a specified one of this at least one communication terminal of the destination. When the communication apparatus sends the address data with the sub-address data to the digital line, the intention is to communicate with the specified communication terminal. The communication apparatus detects a response received through the digital line when the address data with the sub-address data has been sent thereto, and resends the address data without the sub-address data on the basis of the detection.

Abstract: In memory storage transmission, if image transmission has been interrupted because of an error, the cause of the error is determined. Error image data whose retransmission has a possibility of success is preserved in an image memory, and error image data whose retransmission has no possibility of success is erased from the image memory. If error image data is preserved in the image memory, and storage of new image data in the image memory is instructed, error image data preserved in the image memory is erased in accordance with the remaining amount of memory capacity of the image memory. It is thereby possible to preserve appropriate error image data in the image memory without reducing the efficiency of the memory.

Abstract: A communication control unit for controlling communication of data from external equipment includes a receiver for receiving the data from the external equipment, a transmitter for transmitting the data received by the receiver, a first set device for setting a data transmission rate between the receiver and the external equipment, and a second set device for setting a data transmission rate of the transmitter in accordance with the data transmission rate set by the first set device.

Abstract: A communication apparatus includes a reception unit for receiving discrimination information for discriminating a calling party terminal equipment; a memory for storing the information received by the reception unit if no response is made to the call reception; and an output unit for visually outputting the information stored in the memory. The communication apparatus may further include a counter for counting the number of call receptions for each calling party number stored in the memory; and a unit for notifying one of the count result by the counter. The communication apparatus may also include a unit for determining if a call reception from a communication network is to be responded to or not; and a unit for calling the calling party after the display by the display unit, in response to an entry of a predetermined key.

Abstract: Disclosed is 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 communication apparatuses (4, 5, 6, 7, 8, 9, 10), wherein when all the information channels are engaged, the idle condition thereof is automatically monitored, and a call is originated when the idle condition is detected, thereby eliminating the wastefulness of operation and improving the efficiency of the line. In particular, when the communication terminal apparatus is connected to a subscriber's line (3) of an ISDN system, communication is effected by using B channels, and if all the B channels are found to be busy upon origination of a call, the idle condition of one of the B channels is monitored from the contents of a D channel, a call being originated again when a B channel becomes idle.

Abstract: A data communication apparatus connectable to a line having a plurality of communication channels or to a plurality of lines comprises: multi-address transmission means for transmitting document sheet information to a plurality of destinations through the plurality of communication channels or the plurality of lines. The multi-address transmission means starts the multi-address transmission to a second destination through one of the communication channels or the lines a predetermined time after the start of the multi-address transmission to a first destination through other one of the communication channels or the lines.

Abstract: There is disclosed a display apparatus capable of displaying code data and image data. Both data are displayed in a different manner, for example in different colors, in order to enable the user to distinguish these data.

Abstract: A data communication system includes a receiver, a transmitter, an NCU, a control circuit, and a display circuit. In the send or receive mode, the number of remaining sheets or the time for sending or receiving such sheets is calculated and displayed on the display circuit under the control of the control circuit.