JPH0537970A - Signal sending interval guranteeing system - Google Patents

Abstract

PURPOSE:To prevent the generation of signal inversion in an exchange network by sending a signal received next to the preceding one while securing its sending timing when the receiving interval of signals received from an opposite station is short in an exchange system. CONSTITUTION:In the exchange system 1, a signal A' is sent at the time of receiving a signal A, and at the time of receiving a signal B, a signal B' is sent. When the receiving interval (t) of the signals A, B is shorter than a signal sending guranteeing timing time T in the exchange network, signal sending is waited during the period of a queuing time t' after receiving the signal and then the signal B' is sent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal transmission interval guarantee system for guaranteeing a signal transmission interval in a switching system.

[0002]

2. Description of the Related Art Conventionally, in an electronic exchange system, when a PB signal of, for example, a predetermined digit indicating an exchange connection is sent from an exchange of an opposite station, the exchange side which receives the PB signal and sends it to another station sends a signal. However, the received signal is sent to another station as it is and relayed, or various exchange connections are performed within the own station, without guaranteeing the time interval.

[0003]

The above-mentioned conventional electronic exchange system receives a signal sent from the exchange of the opposite station and sends it to another station at the same timing, so that, for example, from the exchange of the opposite station. If the sending intervals of the sent signals are short, a reversal phenomenon of signals occurs in the switching system, that is, a previously received signal is sent later, resulting in incorrect switching connection. There was a problem of being told.

[0004]

In order to solve the above-mentioned problems, the present invention comprises means for ensuring the timing of sending a received signal after the signal reception interval is short.

[0005]

Therefore, even if the signal reception interval is short, the signal is sent to the other station at a predetermined interval, so that the signal inversion phenomenon does not occur.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 4 is a block diagram of a system to which the signal transmission interval guarantee system according to the present invention is applied. In the figure, the exchange system 1 of the own station is composed of a central control device 1a, a storage device 1b and the like, and the exchange system 2 of the opposite station is also composed of a central control device 2a, a storage device 2b and the like. There is. Then, the central controller 1 in the exchange system 1 of the own station
a receives a signal coming from the exchange system 2 of the opposite station and has a short signal reception interval (in the case where the exchange system 2 of the opposite station transmits a signal at a short interval).
Is to transmit the received signal to another station at a predetermined transmission interval.

Next, FIG. 1 is a signal sequence diagram showing an embodiment of the present invention. In the figure, the exchange system 1
Sends a signal A ′ when it receives a signal A from the exchange system 2 of the opposite station, and sends a signal B ′ when it receives a signal B. The reception interval t of the signals A and B is the signal transmission guarantee timing time T in the switching network.
If it is smaller than the above, the signal transmission is waited for the waiting time t ′ after receiving the signal B, and then the signal B ′ is transmitted.

FIG. 2 is a flow chart showing a processing procedure of the central controller 1a when a signal arrives at the exchange system 1. The operation of the exchange system 1 will be described based on this flowchart. When a signal is received from the exchange system 2 in step 20, in step 21, the activation state of the signal transmission guarantee timing timer provided inside is determined. In this case, if the signal transmission guarantee timing timer is not activated, the received signal is transmitted as it is (step 22) and the timing timer is activated in step 23. If the timer is running, the received signal is registered in the pause queue section in the storage device 1b and the signal transmission is awaited (step 24).

FIG. 3 is a flow chart showing a processing procedure of the central controller 1a when the signal transmission guarantee timing timer times out. That is, step 30
When the signal transmission guarantee timing timer times out at step 31, it is determined at step 31 whether the received signal is registered in the pause queue portion. If the received signal is not registered, the process is terminated as it is, and if the received signal is registered in the pause cue unit, only one of the signals is taken out and sent out (step 3
2, 33), and then in step 34, it is determined again whether or not the received signal is registered in the pause cue section. If the received signal is still registered, the signal transmission guarantee timing timer is restarted in step 35. As described above, the signal transmission guarantee timing timer is provided to control the transmission intervals of the signals to be transmitted to be appropriate intervals.

[0010]

As described above, according to the present invention, when the signal receiving interval is short, the predetermined timing is secured and the received signal is sent later, so that the signal sending interval is guaranteed, The signal inversion phenomenon can be prevented. As a result, it becomes possible to design the system without considering the operation of the opposite system.

[Brief description of drawings]

FIG. 1 is a signal sequence diagram showing an embodiment of a system to which a signal transmission interval guarantee system according to the present invention is applied.

FIG. 2 is a flowchart illustrating the operation of the above system.

FIG. 3 is a flowchart illustrating the operation of the above system.

FIG. 4 is a configuration diagram of the system.

[Explanation of symbols]

 1, 2 switching system 1a, 2a central control device 1b, 2b storage device A, B reception signal A ', B'transmission signal t signal reception interval t'waiting time T signal transmission guarantee timing time

Claims (1)

Claim: What is claimed is: 1. A switching system for receiving a signal indicating a switching connection from an opposite station and transmitting the received signal, wherein a plurality of consecutive signals transmitted from the opposite station are received. A signal transmission interval guarantee system, characterized in that when the reception interval is short, it is provided with means for transmitting a signal received later after a lapse of a predetermined time, so that the transmission interval is guaranteed when transmitting the received signal.