JPH04170894A - Dial signal reception device for digital exchange - Google Patents

Abstract

PURPOSE:To permit the same subscriber to connect a PB telephone set and a DP telephone set to a branch with little amount of hardware by providing a means which simultaneously connect a sound signal to a depressing key signal reception circuit (PBR), and a subscriber state supervisory signal to a dial pulse reception circuit (DPR). CONSTITUTION:A link line concentration switch on DPR side 9 is provided as the means which simultaneously connects the sound signal to PBR 6 and a scan(SCN) signal to DPR 10 different from the line concentration switches 4 and 7 of the sound signal, for example, in a dial signal reception device on an exchange-side. Thus, a dial signal transmitted from the subscriber 1 can be connected to PBR 6 through the line concentration switch 4 at the same time as the connection of DPR 10 through the link line concentration switch on DPR side 9. The dial signal in any system can be received. Thus, the same subscriber can connect the PB telephone set 1 and the DP telephone set 2 to the branch with little amount of hardware.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dial signal receiving device for a digital exchange that enables a branch connection between a rotary dial telephone and a pushbutton dial telephone.

[Conventional technology]

The conventional dial signal receiving device is described in NEC Technical Report, V, ol.
, 34, No. 9.1981, the function of a line concentration switch (line switch) is to concentrate only the audio signals of each subscriber circuit, and convert the signal that has passed through the line concentration switch into a PCM signal. The resulting PCM highway was connected to a time division switch. Additionally, subscriber status monitoring signals (scan signals, hereinafter simply referred to as SCN signals) such as call origination, disconnection, response monitoring, and digit reception are input to the channel control device via a specific bus called the LMTM bus. A microprocessor in the control device performs signal processing for monitoring the status of subscribers.

In addition, as described in NEC Technical Report, Vol. 36, Nα3.1983, on the highway accommodated by the upstream concentrator switch, voice signals and SCN signals are assigned to one time slot corresponding to subscriber circuits, and the upstream concentrator switch is In the case of a push button dial signal (hereinafter simply referred to as PB double signal), the push button signal receiving circuit (
The SCN signal is connected to the dial pulse receiving circuit (hereinafter simply referred to as DPR) via the concentrator switch. It was only processing.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, if the SCN signal is processed by DPR without passing through a concentrator switch, high-speed processing is required at a constant cycle for each subscriber circuit in order to perform a scanning operation. This increases the load on the central processing unit, which requires a dedicated microprocessor to distribute the load, resulting in an increase in the amount of hardware required.

In addition, even when audio signals and SCN signals are condensed via a concentrator switch, the control operation of the upstream concentrator switch is as follows:
Due to random write and sequential read operations,
The voice signal and SCN signal were written to the same address in the communication path memory. In this case, each subscriber number (LEN)
In this case, only one channel number (NEN) is set in the channel control memory. Therefore, it is not possible to connect voice signals and SCN signals to independent NENs for the same subscriber, and it is impossible to connect voice signals to PBR and simultaneously connect SCN signals to DPRΔ. Therefore, it has been impossible for the same subscriber to make a branch connection between a push-button dial telephone (hereinafter simply referred to as a PB telephone) and a rotary dial telephone (hereinafter simply referred to as a DP telephone).

An object of the present invention is to provide a dial signal receiving device that allows the same subscriber to connect a PB telephone and a DP telephone to a branch with a small amount of hardware.

[Means for Solving the Problems] A dial signal receiving device for a digital exchange according to the present invention for achieving the above object converts voice signals into PBR and SC.
The present invention is characterized in that it includes means for simultaneously connecting N signals to the DPR.

Subscriber terminals include DP telephones and PB telephones, and the DP telephone transmits a dial signal as an SCN signal, and the PB telephone transmits a dial signal as a voice signal. Therefore, in the subscriber, D
If you connect a P phone and a PB phone to a branch, the SC
By performing processing on the exchange side to simultaneously connect the N signal to the DPR and the voice signal to the PBR, it is possible to receive any dial signal.

Here, the above audio signal is converted to PBR, and the SCN signal is converted to DP.
As a means for simultaneously connecting to R, the voice signal is connected to the PBR via a communication path concentration switch, and a side link concentration switch is provided, and the SCN signal is bypassed by the side link concentration switch. D
It may be connected to PR.

The process of connecting the voice signal to the PBR via the concentrator switch and the process of connecting the SCN signal to the DPR using the DPR side link concentrator switch are logically different, so it is easy to connect the dial signal to the DPR. It becomes possible to connect to PBR simultaneously.

Alternatively, as a means for simultaneously connecting the audio signal to the PBR and the SCN signal to the DPR as described above, a switch configuration in which a communication path concentrator switch and a side link concentrator switch for the dial pulse receiving circuit are configured in the same switch is used. It may also be connected by.

Furthermore, in such a dial signal receiving device, if the dial tone transmitted from the dial tone transmitting circuit is sent to the same time slot position as the time slot connected to the push button signal receiving circuit, the dial tone can be distributed to the subscribers. This can be easily done by controlling a pair of switches.

In other words, the upstream audio signal is connected to the time slot accommodating the PBR via the concentrator switch and the distribution switch, but the downstream audio signal is connected to the same dial tone transmitting circuit that sends the dial tone (DT) as the PBR. By accommodating it in the time slot position, when a subscriber's upstream audio signal is connected to the PBR, DT sound can be easily sent to the downstream audio signal by controlling the pair of switches that connect upstream and downstream at the same time. It becomes possible to do so. Therefore, there is no need to set up a fixed bus, which improves the efficiency of the communication path, and has the advantage that software processing is simplified by pair control.

Furthermore, the branch type of rotary dial telephone and push-button dial telephone is provided in subscriber attribute information regarding outgoing calls, and connection processing for outgoing calls is performed based on this information.

[Function] Hereinafter, an outline of the outgoing call processing operation related to the dial signal receiving device of the exchange when a subscriber makes a call will be explained, and the operation of the present invention will be described.

Scanning (SC) is when the exchange monitors the loop presence signal (LSCN) of the subscriber line.
(hereinafter abbreviated as N) circuit. Subscriber's call monitoring information as LSCN signal is sent directly to SC without going through a concentrator switch.
Storage in N memory is performed by hardware. This L
The SCN information is periodically read out by software and call detection processing is performed. This call detection is performed in the same manner on the exchange side regardless of whether a DP telephone or PB telephone is connected to the subscriber's terminal. Therefore, call detection can be performed even if a DP telephone and a PB telephone are connected to one subscriber branch.

When the exchange detects a call, it performs a process of receiving a dial signal sent from a subscriber and a process of transmitting a DT tone to the subscriber. In this case, the reception circuit on the exchange side has different hardware depending on the subscriber's method of transmitting dial signals.

Furthermore, for subscribers whose DP telephones and PB telephones are connected to a branch, it is difficult for the exchange to determine whether dial signals are sent in the form of dial pulses or in the form of multifrequency signals. be.

For this reason, unless the exchange side performs processing to allow dialing signals sent from subscribers to be received in either format, DP telephones and PBt telephones will not be able to receive dialing signals from subscribers connected to the branch. do not have.

In addition, if the SCN signal is connected to the DPR without going through a concentrator switch, a receiving circuit will be required to support the subscriber circuit, which will require an enormous amount of hardware, and its control will require signal processing functions such as a dedicated microprocessor. It is necessary to prepare
It becomes uneconomical.

In the present invention, in the dial signal receiving device on the exchange side, as a means for simultaneously connecting the voice signal to the PBR and the SCN signal to the DPR, for example, a DPR side link concentration switch is provided in addition to the voice signal concentration switch. PB transmits dial signals sent from subscribers via a concentrator switch
The configuration is such that connection to R and connection to DPR via the DPR side link concentrator switch are made simultaneously, and dial signals of either format can be received.

In other words, this allows the same subscriber to perform PBQ with a small amount of hardware that only requires installing a side link concentration switch.
It becomes possible to make a branch connection between the handset and the DP telephone.

In addition, as a means for simultaneously connecting the audio signal to the PBR and the SCN signal to the DPR, a switch configuration is used in which a communication line concentrator switch and a side link concentrator switch for the dial pulse receiving circuit are configured in the same switch. If, for example, the switching operation is performed by controlling the same communication path memory, connection control can be performed by software processing with a small amount of hardware.

Furthermore, for the DT sound sent to subscribers, the upstream audio signal is
If the downlink DT sound is sent to the subscriber in the same time slot that accommodates PBR at the time of connection to R, there is no need to set up a fixed path as described above to send the DT sound. And the amount of hardware is also small.

[Example] Embodiments of the present invention will be described below with reference to FIG.

The terminals of PB telephone 1 and DP telephone 2 are connected to a branch in the subscriber's premises, and are connected to the subscriber circuit 3 of the exchange.
is housed in. The subscriber circuit 3 has a BOR3CHT function, which converts analog signals to digital signals and digital signals to analog signals (C function).
function to detect on-hook/off-hook of the phone
functions) etc.

The upstream audio signal digitized from the subscriber circuit 3 and S
When a call is detected by the LSCN signal, the CN signal is transmitted to the PBR 6 by the path connection process of the upstream concentrator switch 4 and the path connection process of the distribution switch 5.
connected to. The SCN signal is connected to DPRIO by path connection processing of the DPR side link concentrator switch 9.

When the dial signal is connected to DPRIO and PBR6 at the same time, each receiving circuit receives one-digit reception completion information (SP:
In order to send out a signal present), the software reads the SP and determines which receiving circuit is activated, allowing it to process the number received from the subscriber.

Also, the dial tone transmitting circuit 8 that sends the DT tone to the subscriber is a PB
When the path connection process to R6 is completed, it is necessary to send out DT sound to the subscriber, and in order to send out DT sound using the pair control of the switch, the DT sound is placed in the same position as the accommodation time slot of PBR6. Accommodate sound. This has the advantage that the software can perform uplink path connection processing and downlink connection processing at the same time, making the processing easier.

Next, an example in which the line concentration switch and the DPR side link line concentration switch are realized by the same switch will be shown using FIGS. 2 and 3.

In this example, a case is shown in which the switch is configured with the same memory, but the line concentration switch and the DPR side link line concentration switch may be independent hardware in terms of memory configuration.
It can be easily configured.

From the subscriber circuit 3, a signal obtained by digitizing the voice signal is connected to the multiplexing circuit 11 via an up highway 13, and a monitoring signal is connected to the multiplexing circuit 11 via an SCN highway 14. The multiplexing circuit 11 multiplexes signals from a plurality of subscriber circuits and sends them to the uplink path memory 15.

The communication path memory IS performs an operation of randomly writing multiplexed signals to addresses according to the output data of the communication path control memory 16. Further, the reading of the communication path memory is performed by sequentially reading data at addresses according to output data of an internal counter.

The operation of the communication path control memory 16 is performed by sending an order in which the address and write data of the communication path control memory 16 are set from the processor 18 through software processing. The order sent by the processor 18 includes a network of concentrators corresponding to the highway number and time slot number of the concentrator highway 19 connecting the address of the channel control memory 16 indicating the subscriber accommodation location number (LEN) and the distribution switch 5. Write data in the communication path control memory 16 indicating the accommodation position number (LCNEN) is set.

Since the orders sent from the processor 18 are issued asynchronously with the operation of the communication channel, they are synchronized by the order development circuit 17 and then written into the communication channel control memory 16. The reading operation of the communication path control memory 16 is as follows.
Data is read according to the address according to the internal counter output, and this data determines the write address of the channel memory 15.

An example of address allocation for the communication path memory 15 and the communication path control memory 16 is shown in FIG. The communication path control memory 16 has an address capacity twice as large as the number of subscribers accommodated, and upon receiving a concentrator switch connection order from the processor 18, writes LCNEN information to the LEN address. When a DPR connection order is received from the processor 18, the order expansion circuit 17 performs +1 addition (increment) of the address and write data by hardware, and writes LCNEN+1 information to the LEN+1 address. With this operation, the concentrator switch connection process becomes, for example, a process of writing to an even address, and the DPR connection process becomes a process of writing to an odd address.

In the communication path memory 15, voice data and SCN data from the multiplexing circuit are randomly written according to the address specified by the output data of the communication path control memory 16, and its capacity is limited to the network capacity of the concentrator.・The address capacity is twice that of the number. The communication path memory 15 performs a voice data writing operation according to the address of LCNEH, and also performs a writing operation of SCN data according to the address of LCNEN+1. This operation causes the audio data to be written to, for example, an even numbered address, and the SCN data to be written to an odd numbered address.

The contents of this communication path memory 15 are read out sequentially by an internal counter, and a highway is connected to the voice data to the distribution switch 5 and the SCN data to the DPRIO, and the data is sent out.

FIG. 4 shows part of the flow related to software call analysis. Call analysis is the process of determining the service conditions of the calling subscriber and obtaining the information necessary to connect the call. The service conditions of the calling subscriber refer to the attributes that each subscriber has regarding calling, such as telephone type, calling subscriber type (type of whether calling is permitted or not), other priorities, and presence or absence of additional services. It is. The call connection method differs depending on the service conditions, that is, the subscriber's attribute information.
For example, the connection conditions for the numeric receiving circuit for dialing signals differ depending on the type of telephone, whether it is a DP telephone or a PB telephone, or whether a DP telephone and a PB telephone are connected in a branch manner. Data regarding this attribute is called the subscriber's originating translation word (○RTLR) and is stored in memory in correspondence with the subscriber accommodation location.In call analysis, the originating subscriber's ○RTLR is extracted from memory. Read out and refer to it to perform various analyses. This analysis is a process of determining a task according to attributes such as the type of telephone of the originating subscriber included in the RTLR.

As a result of the analysis, a task is determined, and here we will use an example of branch connection between a DP telephone and a PBii telephone, so this task will simultaneously connect the originating subscriber, DPR, and PBR, and send DT sound to the subscriber. The communication path to be used is selected and driven.

[Effect of the invention 1 According to the present invention, the DP telephone and the
Even when the B telephone is connected to a branch, the numeric receiving circuit on the exchange side is connected to DPR and PBR at the same time, so either selection signal can be received, which has the effect of improving additional services for subscribers.

In addition, the software processing of the concentrator switch and DPR side link concentrator switch is performed by hardware.
, LCNEN are automatically incremented, there is no difference in the basic number system, and the design can follow the conventional system.

In addition, since the transmission of DT sound is controlled by a switch by pair control so that it is distributed to subscribers when connected to PBR, it is necessary to set a fixed path and control the up and down communication paths separately. This simplifies software processing, and since no fixed path is required, it has the effect of improving the efficiency of the communication path.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention, FIG. 2 is a block diagram of another embodiment, FIG. 3 is a diagram showing address assignments of the channel memory and channel control memory, and FIG. FIG. 4 is a diagram showing a flow related to software call analysis. Code explanation 1...Push button dial telephone (PB telephone) 2...
・Rotary dial telephone (DP telephone) 3...Subscriber circuit 4...Upstream concentrator switch 5...Distribution switch 6...Push button dial signal receiving circuit (PBR) 7
...Down line concentration switch 8...Tone transmission circuit 9...DPR side link line concentration switch 10...Dial pulse reception circuit (DPR) 11...Multiplex circuit 13...Up highway 14... SCN highway 15... Uplink path memory 16... Uplink path control memory 17... Order development circuit 18... Processor

Claims (1)

[Claims] 1. A communication path configuration having a concentrator switch stage and a distribution switch stage, a dial pulse receiving circuit that receives subscriber status monitoring signals such as dial pulses sent from a rotary dial telephone, and a push-button dial telephone. a dialing signal receiving circuit having a push-button signal receiving circuit for receiving a multi-frequency voice signal transmitted from the switch; and a dialing tone transmitting circuit for transmitting a dial tone to the subscriber; In a dial signal receiving device of a digital exchange that performs call connection processing according to attribute information of a subscriber regarding a call, the voice signal is simultaneously connected to the push button signal receiving circuit and the subscriber status monitoring signal is connected to the dial pulse receiving circuit. 1. A dial signal receiving device for a digital exchange, comprising: means. 2. The above means for simultaneously connecting the audio signal to the push button signal receiving circuit and the dial pulse signal to the dial pulse receiving circuit connects the audio signal to the push button signal receiving circuit via the communication path concentrator switch, and 2. A dial for a digital exchange according to claim 1, wherein a side link concentration switch is provided, and the dial pulse signal is connected to the dial pulse receiving circuit by bypassing the call path concentration switch by the side link concentration switch. Signal receiving device. 3. The above means for simultaneously connecting the voice signal to the push button signal receiving circuit and the dial pulse signal to the dial pulse receiving circuit is to connect the communication line concentrating switch and the side link concentrating switch for the dial pulse receiving circuit to the same switch. 2. The dial signal receiving device for a digital exchange according to claim 1, wherein the dial signal receiving device is connected by a switch structure configured in a digital exchange. 4. In the dial signal receiving device for a digital exchange according to any one of claims 1 to 3, the dial tone transmitted from the dial tone transmitting circuit is transmitted in the same time slot as the time slot in which the dial tone transmitted from the dial tone transmitting circuit is connected to the push button signal receiving circuit. 1. A dial signal receiving device for a digital exchange, characterized in that the dial tone is transmitted to a subscriber station and the dial tone is distributed to subscribers by controlling a pair of switches. 5. In the dial signal receiving device for a digital exchange according to any one of claims 1 to 4, a branch type of a rotary dial telephone and a push button dial telephone is provided in the attribute information of a subscriber regarding a call. A dial signal receiving device for a digital exchange, characterized in that it performs connection processing.