JPS5844886A - Automatic telephone exchange system - Google Patents

Abstract

PURPOSE:To eliminate the need for continuous restriction of a central controller for the connection of an incoming register trunk, by providing a counting and a storage means of a selection signal for an instantaneous starting trunk. CONSTITUTION:When an incoming call is given to an instantaneous starting trunk 100 via a trunk line 500, an incoming detection circuit 101 transmits a detection signal to a central controller 200, a dial pulse counting circuit 103, and a switching circuit 102. The counting circuit 103 counts dial pulses transmitted via the switching circuit 102 and the count value is stored in a storage circuit 106 via a storage control circuit 105. On the other hand, the central controller 200 connects an incoming register trunk 400 to the trunk 100 via a channel device 300, and after the end of connection, the transfer of selected figure is indicated to a dial pulse transmission circuit 107 of the trunk 100. The circuit 107 transmits the selected figure in the circuit 106 to the incoming register trunk 400.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an immediate activation trunk control scheme in an automatic switchboard.

When a call arrives on the instant-start trunk over the conventional central office line, the central controller connects the instant-start trunk and the incoming register trunk through a call path switch to count selection signals such as dial pulses. At this time, it is necessary to perform the process from detecting an incoming call to the immediately activated trunk to connecting it to the incoming register trunk at the pie level in a short (real) time. In order to satisfy this requirement, it is desirable to increase the speed of central control units, communication path switches, and the like. Furthermore, it is necessary to provide an input register trunk that is exclusively connected to the immediate startup trunk, which inevitably increases k'C (equipment).

The present invention has been made in order to solve these problems, and it includes all kinds of means and a central control unit for counting the selection signals arriving at the immediate activation trunk connected to the incoming side of the communication path network. and a means for transmitting the accumulated selection signal to the access ladder network according to an instruction, and when a call arrives at the immediate activation trunk, the incoming register trunk on the outgoing side of the access ladder network is selectively connected and the selection signal is sent. It is characterized by receiving.

Embodiments of the present invention will be described below with reference to the drawings.

The figure is a configuration diagram showing an embodiment of the present invention. Referring to FIG. In an automatic telephone exchange configured with the following, an incoming call detection circuit 101 detects an incoming call signal arriving via a central office line 500 in an immediately activated trunk 100, a dial pulse counting circuit 103 counts dial pulses, and a dial pulse counting circuit 103 counts dial pulses. A switching circuit 102 that sends only to the i-circuit 103, an inter-digit identification circuit 104 that identifies between digits of dial pulses, a temporary memory circuit 106 that stores counted dial pulses, and a memory control surface that controls this memory circuit 106. path 105 and the selected numeric information stored in the temporary storage circuit 106 as a dial pulse to the communication path switch 30.
A dial pulse sending circuit 107 is provided to send out a dial pulse to 0,
It is connected to the communication path switch 300 via an immediate activation trunk accommodation terminal 800.

In such a configuration, when an incoming call signal arrives via the office line 500, the incoming call detection circuit 101 detects the incoming call, and sends the incoming call detection signal to the switching circuit 1o2, the dial pulse counting circuit 103, and the central control unit 200. . The switching circuit 10 receives the incoming call detection signal from the incoming call detection circuit 101
2 switches the line so that dial pulses arriving from the outside via the office line 500 are counted only by the dial pulse counting circuit 103. When a dial pulse arrives, a dial pulse counting circuit 103 counts it, and an interdigit discrimination circuit 104 performs interdigit detection of the dial pulse. Also,
Selected numeric information from dial pulse counting circuit 103 is written and stored in temporary storage circuit 106 under the control of storage control circuit 105.

On the other hand, when the central control unit 200 detects an incoming call to the immediate start trunk 100 via the control bus 900, it selects the incoming register trunk 400 to receive selected digit information, and sends the call via the call path switch control bus 600 to the incoming register trunk 400 to receive the selected number information. switch 3
00 to connect the immediate activation trunk lOO and the input register trunk 400. After the connection between the two is completed, the central control unit 200 instructs the dial pulse sending circuit 107 of the immediate start trunk 100 to send out the received and accumulated selected numeric information. As a result, the dial pulse sending circuit 107 reads out the selected numeric information stored in the temporary storage circuit 106 via the storage control circuit 105, converts it into a predetermined dial pulse signal format, and transmits it to the communication path switch 30.
The input register trunk 400 connected to the output terminal of 0 is made to count the output.

Although the above-mentioned embodiment uses a dial pulse as a selection signal, it can also be implemented in the same way with a pushbutton (FB) signal.

As explained above, when using the conventional instant-activation trunk, the central control unit was forced to continuously increase the time required from the time an incoming call was detected until the connection with the incoming register trunk was completed. According to the method, the selection signal arriving from the central office line is received and stored in the immediate activation trunk, and then sent to the input register trunk for counting according to instructions from the central control unit, so the central control unit is continuously constrained. This avoids making a connection to the incoming register trunk with high-level real-,7,@v time processing. Therefore, without interfering with the real-time processing function of the central control unit, there is no need to provide a dedicated entry register trunk for the immediate start trunk, and equipment costs can be reduced.

[Brief explanation of the drawing]

The figure is a diagram showing one embodiment of the present invention. 100... Immediate startup trunk, 101...
...Incoming call detection circuit, 102...Switching circuit, lo
3...Dial pulse counting circuit, 104...
... Inter-digit identification circuit, 105...-- Memory control circuit,
106...Temporary memory circuit, 107...
Dial pulse sending circuit, 2o. ...Central control unit, 300 call path switch o. ...Input register trunk, 500, old office line, 6o.

Claims (1)

[Claims] comprising means for counting and accumulating selection signals and means for transmitting the accumulated selection signals in accordance with instructions from a central control unit, and capable of receiving calls to an immediately activated trunk connected to the ingress side of the communication network;
An automatic telephone switching system characterized in that an incoming register trunk on an outgoing line side of a communication route network is selectively connected to receive a selection signal sent from the immediately activated trunk.