JPS6221319B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pulse relay method when exchanging pulses from a push button signal to a dial pulse signal in a common control type automatic exchange.

Figure 1 shows a specific circuit configuration of an example of a conventional pulse relay method. However, the conventional method requires a pulse receiving circuit, a dial pulse information determination circuit, etc., and has the disadvantage that it is not economical. .

To explain the operation of pulse transmission using the conventional method using Fig. 1, when this trunk (outgoing trunk) is connected to an extension subscriber who requires pulse exchange, a sender activation signal is sent via the E line. is sent to Relay SA, which causes Relay SA
is activated during pulse delivery. Next, the converted dialing information to be sent is D
The signal is sent to relay A via the wire and relay contact sa, thereby restoring and operating pulse relay relay A. In this case, a ground signal is normally sent to the D line, and this ground signal is cut off a predetermined number of times in response to dial pulse information. Depending on the operating state of relay A, the slow recovery B position relay B, and furthermore the C position relay C, also operate in a predetermined manner. is being sent out.

In this way, dial pulse information is sent for the number of digits appropriate for the game, but once the sending is finished, it is necessary to hear the 3rd DT (dial tone, the same applies hereinafter), so the relay that is the sender activation relay
Restore the SA, restore the call path, and let the extension subscriber hear the 3rd DT. After this, in order to send dial information for the number of digits required for the game, the sender activation relay SA is activated again to send dial pulse information for the required number of digits, and then the relay SA is restored again and the 4th DT is activated. Make it available to extension subscribers.

Monitoring the number of digits to be sent out in accordance with the game and sending information to the trunk is done using a separate device such as a register, based on the outgoing dial pulse information, that is, the number of digits to be sent out is determined based on each destination direction, and the sender activation is started. Send the signal and termination signal to the trunk.
On the trunk side, upon receiving this information, it starts and ends the sending process, and performs other functions such as making the nDT heard by the extension subscriber.

The reason why a monitoring circuit with the number of digits appropriate for the game is used to determine whether to start or end the sender, whether to let the extension subscriber hear the DT, etc. is because the required number of digits to be sent differs depending on the game, and this is why the pulse receiving circuit,
A dial pulse information judgment circuit and a sender activation and recovery circuit are required. When performing pulse relay in this manner, it is not only uneconomical but also causes problems in implementation.

Note that the symbol L in FIG. 1 is a wire for forming a DC loop in the game.

The object of the present invention is to eliminate the above-mentioned drawbacks and to provide an economically advantageous pulse relay system.

For this purpose, the present invention takes time measures when sequentially relaying the dial pulse information converted from the push button signal in units of digits, and receives the converted dial pulse information in units of digits by a relay reception relay. Each time the relay contact disconnects and separates the communication path, the original pulse relay relay is connected in the same way, with the disconnection and separation state maintained until the end of dial pulse transmission. It is designed to operate via contacts.

The present invention will be explained below with reference to FIG.

In FIG. 2, PA is a relay that once relays and receives the converted dial pulse information, and CA is a C position relay corresponding to relay PA.

Next, to explain the operation when sending pulses with reference to Fig. 2, when this trunk is connected to an extension subscriber who requires pulse conversion, a sender activation signal is sent via the E line and activates relay SA. let Next, the converted dial information to be sent out is sent via the D line, and once the relay PA, which relays and receives the dial pulse information, is restored and operated. A ground signal is normally sent to this D line, and this ground signal is cut off in response to dial pulse information. The relay PA repeatedly recovers and operates according to the dial pulse information, but
At this time, the communication path is cut and separated when the relay PA first recovers. At the same time, relay
Activate CA, and this also disconnects the call path.
Keep it separate.

In addition, relay A is restored after relay PA is restored. Therefore, when the pulse is sent to the opposing station, the communication path has already been cut and separated. Therefore, even if pulses are sent to the playing station, noise from the playing station will not enter the extension subscriber.

Next, regarding the operation during pulse transmission in units of digits, at this time, relay C, which is the original C position relay, is operating, so relay CA continues to hold through relay contact c, and the communication path continues to be cut and separated. In this way, relay CA
The path that makes it possible to operate is the contact c of relay C.
Since this is included, the communication path can be cut and separated until the final pulse of 1 digit is sent.

Relay CA also uses a diode-type spark quencher in the coil, so relay PA will restart for the first time according to the dial pulse information, and even if the ground signal is lost, it will not recover immediately, but will recover slowly and still maintain sufficient power. can continue. Since the holding ground is supplied from contact c of relay C by the operation of relay C, the holding of relay CA continues. Once the one-digit dial pulse information has been sent, relays C and CA are restored, and a communication path is established between the extension and the other party.

As explained above, in the present invention, the converted dial pulse information is once received by the relay reception relay, and after the communication path is cut and separated using the circuit, the original pulse relay relay is operated. Once the digit dial pulse information has been sent, a communication path is established between the extension subscriber and the other party. According to the present invention, a communication path between the game player and the extension subscriber is always formed between the digits of the dial pulse information.
It does not matter when the digits are sent, and there is no need for a digit number monitoring circuit, which is not only economical but also advantageous in terms of implementation.

[Brief explanation of the drawing]

FIG. 1 is a specific circuit configuration diagram of an embodiment of a conventional pulse relay system, and FIG. 2 is a specific circuit configuration diagram of an embodiment of the pulse relay system according to the present invention. A...Pulse relay relay, PA...Dial pulse information relay reception relay, CA...Relay.

Claims (1)

[Scope of Claims] 1. In a pulse relay method in which a push button signal from the extension side converted into a dial pulse signal is relayed to the opposing station via a contact point of a pulse relay relay provided in an outgoing trunk, the dial pulse signal is When relaying sequentially in units of digits, the pulse relay relay is activated via the first contact of the relay reception relay provided in the outgoing trunk to send out a dial pulse signal in units of digits, and the relay Each time the receiving relay receives a dial pulse signal in units of digits, the second contact of the relay disconnects and separates the communication path, and after the first contact sends out the dial pulse signals in units of digits. , a pulse relay system characterized in that a communication path is formed between the extension subscriber and the opposing station by the second contact point until the transmission of the dial pulse signal of the next digit begins. 2. The disconnection and isolation of the communication path is maintained while one pulse train is being sent to the opposing station, and after the transmission of the one pulse train is completed, the C position relay is restored and the DC circuit that sends pulses to the opposing station is restored to a steady state. The pulse relay method according to claim 1, which is canceled at the time when the pulse relay method is released.