JPH0393392A - Subscriber line concentration communication system - Google Patents

Abstract

PURPOSE:To attain urgent communication to a slave station during talking by allowing a base station to send information such as notice of an incoming call to the slave station and a telephone number of a caller via a speech channel used by the slave station. CONSTITUTION:A main control section 40 transfers information such as a caller telephone number sent from a guide signal processing section 20 to a speech channel radio equipment interface circuit 61 corresponding to the speech channel busy with the slave station, and gives a command of interrupting tentatively a speech channel CH 1 busy to the speech channel radio equipment interface circuit 61 and of sending information such as a caller telephone number and notice of an incoming call to a relevant slave station. A radio equipment interface circuit 60 sends the information such as an incoming call notice and the caller telephone number to the relevant slave station via a busy speech channel CH 1 in response to the command of the main control section 40 through a radio transmitter-receiver 50 and an antenna 3. Thus, the incoming information is noticed to the slave station in busy state.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a subscriber line concentration communication system. [Prior Art] As a communication method with mobile communication terminal equipment, etc. (slave stations) that are difficult to connect directly to the switchboard of the general subscriber telephone network, the subscriber line from the switchboard is connected to the base station, and the base station A subscriber concentration communication system is used in which a subscriber station and a slave station are connected wirelessly or the like via a concentration transmission line having a plurality of communication channels and at least one control channel. Conventionally, in this type of subscriber concentration communication system, When a base station received an incoming call from a caller to a slave station that was currently talking, the base station sent out a busy tone to the caller to indicate that the caller was busy. [Problems to be Solved by the Invention] In the conventional subscriber line concentration communication system described above, when an incoming call is received to a slave station that is currently on a call, a busy message indicating that the caller is busy is displayed. It only sends out sound.Therefore, even if a caller needs to urgently contact a subscriber who is currently on a call, the disadvantage is that the caller must wait for the first call to finish. An object of the present invention is to provide a subscriber line concentration communication system that can report incoming call information to a slave station during a call, eliminating such conventional drawbacks. [Means for Solving the Problems] The present invention The subscriber line concentration communication system consists of a base station connected to an exchange via multiple subscriber lines assigned representative numbers;
In a subscriber concentration communication system comprising a plurality of slave stations connected to the base station by a second dialing method via a concentration transmission line having a plurality of communication channels and at least one control channel, the base station means for notifying the caller that the call is in progress and prompting the caller to send information such as the caller's telephone number when receiving an incoming call to the slave station; means for receiving information such as a telephone number, temporarily disconnecting the communication channel in which the slave station is talking, and transmitting an incoming call notification and information such as the calling party's telephone number using the same communication channel; The slave station is equipped with means for receiving information such as the incoming call notification and the calling party's telephone number transmitted from the base station via the communication channel, and transmitting the notification by sound or display. [Example] Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the subscriber line concentration communication system of the present invention. In the figure, a base station 1 is connected to an exchange 2 such as a general subscriber telephone network via a plurality of subscriber lines 101 to Ion assigned one representative number.
Subscriber line interface circuit 11 provided in base station 1
~1n are connected to subscriber lines 101~10n, respectively,
Incoming and outgoing calls. Inputs and outputs call connection information such as call termination. The communication path switch 30 receives n signals from the subscriber line interface circuits 11 to 1n, switches and connects these signals to m (man) communication channels according to a control signal from the main control unit 40, and outputs the signals. do. Communication channel radio interface circuits 61 to 6m input and output communication path signals corresponding to m communication channels. It controls channel allocation on communication path channels, and inputs and outputs call connection information to and from the main controller 40 via the data path 202. The control channel radio interface circuit 70 transmits call connection information such as incoming and outgoing calls on the control channel to the main control unit 4 via the data path 202.
Input/output as 0. The guidance signal processing unit 20 is provided to implement the present invention, and when a call is received to a slave station that is currently on a call, the guidance signal processing unit 20 transmits the caller's telephone number, etc. to the caller. It generates and outputs a signal prompting the caller to send information, and also inputs and outputs information such as a telephone number sent from the caller to and from the main control unit 40 via the data path 202. The main control unit 40 performs management control of the entire system, such as allocation control of communication channels on the wireless transmission path. The wireless transceiver 50 performs wireless communication with each slave station 4 via the antenna 3. Next, we will explain the operation. An incoming call from the exchange 2 to the base station 1 is made via one of the plurality of subscriber lines 101 to 10n, but let us now assume that the call is made via the subscriber line 101. The subscriber line interface circuit 11 detects an incoming call and notifies the main control unit 40 of the incoming call via the data path 201. The main control unit 40, which has received the notification of the incoming call, checks whether the communication channel is free or not, and if the channel is free, it instructs the subscriber line interface circuit 11 to process the incoming call. The subscriber line interface circuit 11, which has received the instruction to process the incoming call, performs the incoming call connection process, receives the second dial signal of the slave station transmitted from the calling party, and sends it to the main control section 40.

The main control unit 40 checks whether the slave station specified by the second dial signal is in a call, and if the slave station is in a call, sends a guidance signal to the subscriber line interface circuit 11 via the call switch 30. Connect to the processing section 20. The guidance signal processing unit 20 sends a signal indicating that the call is in progress and a signal prompting the transmission of information such as the caller's telephone number to the caller via the subscriber line interface circuit 11 in response to instructions from the main control unit 40. At the same time, it also receives information such as the calling party's telephone number sent from the calling party and sends it to the main control unit 40 via the data bus 202. The main control unit 40 transmits information such as the telephone number of the caller sent from the guidance signal processing unit 20 to the communication channel (herein referred to as CHI) in which the slave station is communicating.
Communication channel radio interface circuit 6 compatible with
At the same time, the call channel CH1 that is currently being called is temporarily disconnected from the call channel radio interface circuit 61, and information such as an incoming call report and the caller's telephone number is sent to the corresponding slave station. Instruct them to do so. The radio interface circuit 60 sends a notification of an incoming call and information such as the caller's telephone number via the radio transceiver 50 and the antenna 3 via the active communication channel CH1 in accordance with instructions from the main control unit 40. transmit to the slave station.

The slave station receives a notification of an incoming call and information such as the caller's telephone number via the active communication channel CH1, and sends the notification by sound or display. [Effects of the Invention] As explained above, according to the subscriber line concentration communication system of the present invention, when an incoming call occurs to a slave station during a call, the base station
Sends a signal to the caller indicating that the call is in progress and a signal prompting for information such as the caller's telephone number, and also notifies the slave station of an incoming call and makes a call via the communication channel that the slave station is using. The slave station receives this information and reports it by sound or display, which has the effect of making it possible to make an emergency contact to the slave station that is currently on the phone. ．．

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the subscriber line concentration communication system of the present invention. 1... Base station, 2... Exchange, 3... Antenna,
4...Slave station, 11-1n...Subscriber line interface circuit, 20...Guidance signal processing section, 30...Communication path switch, 40...Main control section, 50...Wireless transmission/reception machine, 6 1 to 6m... radio interface circuit for speech channel, 70... radio interface circuit for control channel, 101 to Ion... subscriber line, 201
．． 202...Data path.

Claims (1)

[Claims] A base station connected to an exchange via a plurality of subscriber lines assigned representative numbers, and a base station connected to the exchange by a second dialing method via a concentrator transmission line having a plurality of call channels and at least one control channel. In a subscriber concentration communication system consisting of a plurality of connected slave stations, the base station:
means for notifying the caller that the slave station is busy and prompting the caller to send information such as a telephone number of the caller when the slave station receives an incoming call; means for receiving information such as the telephone number of the slave station, temporarily disconnecting the communication channel in which the slave station is talking, and transmitting an incoming call notification and information such as the telephone number of the calling party using the same communication channel, The slave station is provided with means for receiving the incoming call notification and information such as the calling party's telephone number transmitted from the base station via the communication channel, and reporting the same by sound or display. Features subscriber line concentration communication system.