JPS6232678B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system for receiving and storing dialed digits in an outgoing sender of a telephone exchange using a register sender system.

Generally, common control type telephone exchanges use a register sender separation method in which all the dialed digits sent from the subscriber are stored in the transmission register and then sent to the other party using an output sender, and a register sender separation method is used to receive the dialed digits from the subscriber. There is a register sender merging method (hereinafter referred to as register sender method) that starts sending numbers to the other station before completion.

In the register sender separation method, the digits are sent after all dialed digits are received from the subscriber, so the disadvantage for the subscriber is that there is a longer waiting time for the subscriber to be connected to the called party after dialing is completed. be. In particular, when the number transmission format is a dial pulse format, it takes an average of 1.1 seconds per digit, so in the case of 6 digit transmission, the subscriber is forced to wait in silence for approximately 6.6 seconds after dialing is completed. Subscribers are left wondering whether the exchange is operating normally.

To avoid such drawbacks in the register sender separation method, the register sender method is often used. In the register sender method, when the transmitting register receives up to the number of digits required to select a route, it activates the common control device and performs the exchange operation, and thereafter transmits dialed digits from the subscriber each time it is received. A feature of the register sender method is that it can reduce the waiting time after dialing is completed.

Various methods can be considered as to how to send out the numbers after the exchange operation, but in the present invention, as shown in FIG. Sending is in progress. Therefore, before and after the exchange operation, the receiving device for dialed numbers switches from the sending register to the output sender.
A method is adopted in which a number (one digit) is received by a sending register and sent to an outgoing sender via a register sender link. Subsequent dialed digits from the subscriber are received directly by the outgoing sender.

However, since the register sender link is configured to be used in common by all sending registers, queuing occurs. If this waiting time runs out due to call congestion, etc., the outgoing sender will receive a dial pulse corresponding to the next digit via the outgoing trunk/outgoing sender before receiving one digit via the register sender. There is a possibility that it will arrive at the sender. Conventionally, when such a situation occurred, it was treated as a call loss, but by using the present invention, such a call can be connected normally, and the call loss can be made negligibly small (0.0001 or less). It is possible to obtain almost the same connection quality as the register sender separation method.

The present invention uses a register sender method to accumulate dialed digits in the outgoing sender, whereby the selected digits transferred from the outgoing register and the dialed digits received from the outgoing trunk are stored in a normal order due to the delay in the operation of the common equipment. This is to ensure that the connection operation is always performed normally by accumulating information that is in danger of not being connected. An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing a relay system using a register sender system according to the present invention. In the figure, SWF is a switch frame of the exchange ladder, OR is a transmission register that has functions such as receiving and storing dialed digits, and OS is an output register that also has functions such as receiving dialed digits and transmitting accumulated selected digits to the other station. The sender and CM are common control devices, OGT is the outgoing trunk, RSL is the register sender link required to transfer one digit worth of pulses from the outgoing register OR to the outgoing sender OS, and OSL is the link between the outgoing trunk OGT and the outgoing sender OS. This is an outgoing sender link necessary for sending and receiving signal information. In addition, ORMC is the outgoing register marker connector, OSC is the outgoing sender connector, and Sub
is the subscriber telephone.

Further, in one example of this embodiment, if the number of digits that the subscriber should dial is defined as 6 digits of "ABCDEF", the digits received by each device are as follows. The transmission register OR receives 4 digits of “ABCD” and transfers the “ABC” code to the common control device CM,
Code sends out via Register Link RSL
After transferring to the OS, it will be restored immediately. The outgoing sender OS receives and stores the "ABC" code from the common control device CM, receives and stores the D code from the outgoing register OR via the register sender link RSL as described above, and the subsequent dialed numbers E and F are sent to the outgoing sender. It is received and stored from the outgoing trunk OGT side via the link OSL. In the present invention, the order of dialed numbers received by the outgoing sender OS is determined by the common control device CM.
This embodiment is such that even if the E code is received before the D code due to the waiting of the register sender link RSL, etc., the storage order is the same as that of the D and E codes. FIG. 2 shows an embodiment of the circuit diagram of the dial numeral storage method.

In FIG. 2, in explaining the circuit, first, the purpose of use of the relay will be described.

The DS, ES, and FS relays constitute a steering step forward circuit, and are steering relays for identifying the received digits of the dialed numbers received and stored in the D code, E code, and F code, respectively. As is well known, the CA relay operates during pre-pause or minimum pause, returns to normal operation when an impulse arrives, and operates when the impulse ends. Conversely, the C relay is inactive during pre-pause or minimum pause, but is activated upon the arrival of an impulse and continues to hold until the end of the impulse. That is, when the C relay recovers slowly and slowly at the end of the impulse, the CA relay operates, but during the operating time of the CA relay, there is a time during which both the C relay and the CA relay do not operate. Using this time, the storage relay of each code, that is, D~,
Activate storage relays E~ and F to store selected numbers.

In addition, the CX and CY relays identify the operation and recovery of the C relay when receiving dialed digits received via the outgoing trunk and outgoing sender link, and are used as shift control relays for the received digits, and are used to control the number of dialed digits. The CZ relay disconnects the CX and CY relay circuits after dial numeric information has been stored, and allows only the C relay to perform digit shifting for subsequent dial numeric information storage. It is. RSK
The relay is an activated reception relay that is activated from the transmission register OR via the register sender link RSL, but before the RSK relay is activated, the steering relays DS, ES, and FS for identifying received digits (the output sender is activated by the common control device). At the time of acquisition, the selected digit information transferred from the transmission register is stored in the storage relay corresponding to the storage relay (one of which is designated and activated), and after the RSK relay completes its operation, the RSK relay stores the information of the next digit (outgoing trunk and outgoing sender). Dial digits via the link) The steering increment circuit for the following shift control relay contact (CX relay contact CX ² )
form together.

The ON relay contact not shown is a common control device.
This is a relay that operates when it is captured by the CM, and remains operational until the outgoing sender OS is restored. Further, A and AA relay contacts (not shown) are loop monitoring and dial impulse receiving relays on the calling side, and PA to PE relay contacts are dial impulse counting relays. Also, 4DR, 5DR,
For each read of 6DR, the output sender OS outputs the output register OR
This is an information read for operating a reception digit identification relay for one selected digit to be received. Further, FIG. 3 is a time chart for explaining the operation.

Next, the operation of receiving dialed numbers in the sender OS configured as described above will be explained using FIGS. 1 and 3. As an example, as shown in FIG. 1, the subscriber dial is 6 digits "ABCDEF".

Now, when the output sender OS is activated and captured by the common control device CM, the ON relay (not shown) keeps operating. In addition, the output sender OS receives from the common control device CM the read 4DR as digit instruction information for accumulating the dial digits of the D code that the output sender OS should receive from the transmission register OR via the register sender link RSL, and the DS relay operates. , followed by Jiki-on ²
- fs ² - es ² - ds ⁰ contacts - relay DS - DS relay holds in the battery loop.

Also, the CA relay operates in the loop of each contact - relay CA - battery of earth air - on ¹ - cz ⁰ - c ³ - cx ⁰ .

On the other hand, as shown in Figure 1, in the transmission register OR, after transmitting the three digits of "ABC" to the common control device CM, it receives the dial pulse of the D code, and after accumulating it, sends it via the register sender link RSL. This D
The code will be transferred to the outgoing sender OS.

In the output sender OS, the selection number of this D code is first input to the DS operated by the common control device CM.
The holding circuit of the D relay in the transmitting register OR, that is, the earth-register sender link RSL-
rsk ¹ - fs ⁵ - ^{es 5} - ds ⁵ contacts - D - relay - battery accumulated in the transmitting register OR through the route
The code selection information is transferred as is to the outgoing sender OS, and the D code storage relay in this OS operates. In this storage relay operation, the RSK relay also operates at the same time, but the previous D code is stored by the rsk ¹ contact until the RSK relay operates.

It is obvious that in the outgoing register OR, after the D code is transferred to the outgoing sender OS via the register sender link RSL, recovery is performed by a recovery instruction from the outgoing sender OS (not shown). Subsequent subscriber dial pulses are received by the outgoing sender OS via the subscriber Sub-switch frame SWF-outgoing trunk OGT-outgoing sender link OSL in FIG.

In the outgoing sender OS, the initial pulse, that is, the arrival of the E code impulse as shown in Figure 1 activates the PA relay (not shown), and then the earth air -
on ⁰ - pc ⁰ - pb ⁰ - pa ⁰ - ca ⁰ contacts - C relay The battery route keeps the C relay operating until the end of the series of impulses. Earth air by C relay operation
On ¹ - cz ⁰ - c ^{3 -} cy ¹ - contacts - CX relay - The CX relay operates through the battery route, and the CA relay that was operating is restored by switching the c ³ contact.
Due to the operation of CX relay, earth air -on ² -rsk ² -cx ² -
Each contact of ds ¹ - es ⁰ - ES relay - ES relay operates depending on the battery route, earth air - on ² - rsk ² - cx ²
- es ² - ds ⁰ each contact DS relay - battery route
DS relay continues to operate. When the dial pulse of the E code ends, the C relay starts slow recovery.

When the C relay is restored, the earth will be turned on ¹ - cz ⁰ -
The CY relay operates through the c ³ - cx ⁰ - cy ² contacts - CY relay - battery route. Each contact of earth air -on ¹ -c ¹ -ds ³ -es ³ -cy ³ -rsk ⁰ by CY relay operation-
CZ Relay - The CZ relay operates through the battery route. Since the CZ relay operation circuit includes the RSK relay contact, the CZ relay operation indicates that the accumulation of one-digit dial number information received from the transmission register OR is completed, and the CY relay operation Since the condition is included, the output trunk
This indicates that the first dial impulse reception from the OGT side has been completed.

When the CZ relay operates, the CZ relay holds the earth air - on ¹ - cz ^{0 -} CZ relay, and the cz ⁰ contact restores the previously operating CX relay, and the cx ¹ contact also restores the CY relay.

Note that the reason for restoring the CX and CY relays is to have only the C relay perform shift control for subsequent dial impulses received from the outgoing trunk side.

In addition, a circuit is created in which the CA relay is re-operated by the route of each contact of earth-on ¹ - ^{c 1} -cz ¹ -CA relay-battery, but when earth-on ¹ -c ¹ -cz ¹ -ca ¹ Each contact - impulse counting relay contact from pa to pe - rsk ¹ -
fs ⁵ - Each contact of es ⁵ - E - C in the storage relay route
The selected numbers of the E code are accumulated by utilizing the non-operating time of the relay and CA relay.

In this way, the contacts of the activation reception relay RSK from the transmission register OR and the dial impulse received from the outgoing trunk OGT side are activated after the CY
The CZ relay is operated by a series circuit with the relay contact, and the D code is accumulated until the first RSK relay operates, and the E code is accumulated by the CZ relay contact that operates after that, so the D code is first , followed by the E code, and are always stored in the correct order.

Next, a case will be explained in which the E code is received before the D code as the outgoing sender OS due to waiting for the register sender link RST or the like. As mentioned above, when a dial impulse arrives from the outgoing trunk OGT side, the C relay and CX relay operate, the CA relay recovers, and when the impulse ends and the C relay slowly recovers, the CY relay operates. That is, since the RSK relay is inoperative, the steering relay cannot step forward, and it is natural that the E code cannot be stored, and it is waiting for activation from the transmission register OR.

In this way, as shown in Figure 3, before receiving the F code, the
When the selected number of the D code is received from the transmission register OR, it is accumulated in the D code through the rsk ¹ contact,
When the RSK relay operates, the ES relay operates using the ground air that passes through the RSK ² contacts. By operating the ES relay, each contact of earth air -on ¹ -c ¹ -ds ³ -es ³ -cy ³ -rsk ^0-
CZ Relay - The CZ relay operates through the battery route.

As mentioned above, the fact that the RSK relay does not operate in this way means that dialed numbers cannot be stored even if dial impulses are received from the outgoing trunk OGT side. That is, after the selected digits from the originating register OR side are accumulated, the selected digits of the subscriber's impulses from the outgoing trunk OGT side can be accumulated.

Also, if an F code pulse is received after the E code pulse ends due to the RSK relay not working,
on ⁰ - aa ¹ - cy ⁰ - C relay - C relay operates on the battery route, CX relay is restored by c ³ contact, earth air - on ¹ - cx ¹ - cy ³ - rsk ⁰ each contact Connected to the fault handling circuit FRC via the route. It is obvious that a circuit can be devised to display a failure message to the subscriber after the F code impulse ends.

As explained in detail above, according to the present invention, there is no misconnection or loss when switching the subscriber impulse reception from the originating register to the originating sender without affecting the operation and delay of the common equipment such as the common control device and the register sender link. This has the effect of preventing calls. Furthermore, it is obvious that it is an extremely important and necessary condition to be able to implement the present invention to prevent incorrect connections, which is a basic function, when performing exchange connections.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a relay system using a register sender system according to the present invention, FIG. 2 is a circuit diagram showing an embodiment of a dial digit storage system according to the present invention, and FIG. 3 is a diagram for explaining the operation. It is a time chart. SWF...Switch frame, OR...Outgoing register, OS...Outgoing sender, OGT...Outgoing trunk, RSL...
Register sender link, OSL...output sender link, CM...common control device.

Claims (1)

[Claims] 1. Outgoing sender of register sender type telephone exchange
Among the multiple pieces of dial number information that the OS receives and stores, the first digit dial number information received from the outgoing register OR via the register sender link RSL following the dial number information from the common control device CM, and the outgoing trunk OGT and outbound sender links
In the storage method of dialed digit information from the second digit received via OSL, the outgoing sender OS has an activated reception relay RSK activated via the register sender link RSL by the outgoing register OR, and an outgoing trunk OGT. and respective contacts rsk ² with the shift control relay CX which is activated by receiving the second digit dial digit information arriving via the outgoing sender link OSL.
and cx ² are connected in series, so that even if the receiving time of the first digit dial numeral information in the outgoing sender OS is later than the receiving time of the second digit dial numeral information, the first digit dial numeral information Before the reception of the third digit dial digit information starts, when the transmission register OR captures the register sender link RSL and is connected to the output sender OS, the activation reception relay RSK is activated and the relay RSK is activated.
At the same time as starts operation, the dial digit information of the first digit is stored in the storage relay D~ of the digit, and when the operation of the relay RSK is completed, the information for identifying the received digit is transmitted through the series-connected circuit. It is characterized by accumulating the dialed number information of the second digit by operating the steering relay ES to perform digit feeding and by connecting the accumulation relay E to the contacts P _a to _{P e} of the dial impulse counting relay. Dial number accumulation method.