KR19990080182A - Signaling processing method of subscriber station - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

Signaling processing technology of subscriber station

I. The technical problem to be solved by the invention

In the subscriber transmission window, there is provided a signaling transmission method of a switching system and a general telephone.

All. Summary of Solution of the Invention

A signal monitoring process of continuously monitoring the signal transition state of all subscribers and informing the switching system of the subscriber, and a process of controlling ring transmission according to the signal transition state when the call is received from the switching system.

la. Important uses of the invention

It is important for signaling processing of subscriber station to general telephone.

Description

Signaling processing method of subscriber station.

The present invention relates to a signaling processing method of a subscriber transmission apparatus, and more particularly, to a method for transmitting signaling delivered through a V5 interface to a subscriber telephone and a switching system. The present invention relates to a method for transmitting signaling to a subscriber telephone and a switching system when the subscriber telephone is connected to a device (subscriber transmission device) supporting an access network.

In the normal PSTN network, the equipment has been developed with the priority of voice level service, and in order to implement this, the equipment to satisfy DS1 / (E1) (1,544Mbps, 2,048Mbps) protocol according to ITU G.703, G.704 standard (KD-4, PCM32-T, FLC-A / B) has been focused on the development. In addition, various protocols (TCP / IP, HDLC (High-level Data Link Control)) were used for communication with devices (ie exchange <-> exchange, transmission equipment <-> transmission equipment). It is only a very small amount of additional functionality (several Kbps to tens of Kbps).

The E1 frame for the voice service has a channel allocated signaling (CAS) structure using abcd 4 bits (signaling information). The subscriber's signaling information was transmitted. In addition, subscriber's additional 2B + D (narrowband ISDN), 64 * P (P = 1,2 ... 30) data communication service is also transmitted through byte allocation in the multi-frame user data area. Did not escape.

Subscriber-side services require a variety of channel units, such as for voice services (SLC-T), narrowband ISDN (2B + D), and OCUDP for data communications. In addition, for connection with the exchange side, various channel units (DPO, DPT, 2W, 4W, SLC-T) are required depending on the type of exchange (analog exchange, inverting exchange, and all-electronic exchange). Therefore, the number of exchange and subscriber transmission equipment channel unit is inevitably increased, and accordingly, the equipment is enlarged, so there is a problem in price competitiveness, and also it is difficult in terms of maintenance. That is, the current CAS type protocol cannot solve these problems, and as a new protocol (ITU-T G.964, G.965 Integrated Digital Loop Career (IDLC)), more systematic message switching This is necessary.

For this purpose, first, an HDLC control processor capable of processing and transmitting a large amount of messaged information is required, and in particular, a problem of processing a D channel of ISDN using LAPD protocol is important. Therefore, it performs systematic message transmission method in accordance with the current international standard, and through this, subscriber transmission equipment and exchange are transmitted and received through E1 Trunk unit rather than connection through channel unit, thereby miniaturizing equipment and convenience of maintenance. The implementation of the system is in full swing due to the intended transmission method.

This will be described with reference to FIG. 1 as an example. Figure 1 shows the overall network configuration of the FLC-C system to which the new transmission scheme is applied. The FLC-C system is an FTTC (fiber to the curb) composition ATM technology for providing subscribers with all services such as video service, landline, payphone, ISDN and leased line (DS1, DS1E) in residential dense areas. It may be based on the optical subscriber transmission system.

As shown in FIG. 1, various services (home shopping, movies, games, karaoke, education, etc.) provided from the ATM network 211 and general telephone services provided from the public switched telephone network (PSTN) 213 are provided through the HDT (exchange 215 of the telephone station 212). Host Digital Terminal). The various services are transmitted to the subscriber transmission device that implements the IDLC function, that is, the ONU (Optical Network Unit) 218 through the optical path (V5 series, V5.2 interface) 217. In addition, the ONU 218 is connected to a telephone terminal in the home, a settop box 220 and various terminals through a conventional twisted pair 219, and thus the various services are provided to the various terminals.

As described above, the subscriber transmission unit (ONU) is connected to the switching system (HDT, exchange) through the V5 interface, and the general telephone (telephone terminal) is connected to the subscriber transmission unit, so that the V5 interface between the general telephone and the switching system. It must be delivered via signaling and is also required.

Accordingly, an object of the present invention is to provide a signaling transmission method to a general telephone when the general telephone is connected to an equipment (subscriber transmission device) supporting an access network connected to the switching system through the V5 interface.

In order to achieve the above object, the present invention continuously monitors the signal transition state of all subscribers and informs the switching system of the signal monitoring process, and controls ring transmission according to the signal transition state when receiving from the switching system. It is characterized by having a process.

1 is an overall network configuration of the FLC-C system applicable to the present invention

2 is a diagram illustrating a peripheral connection configuration of a subscriber transmission apparatus to which an embodiment of the present invention is applied.

3 is an operation flowchart according to an embodiment of the present invention of the signal detection unit in the subscriber transmission apparatus of FIG.

4 is an operation flowchart according to an embodiment of the present invention the signal transmission unit in the subscriber transmission apparatus of FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, specific matters such as specific processes are shown, which are provided to help a more general understanding of the present invention, and the specific matters may be modified or changed within the scope of the present invention. It is self-evident to those of ordinary knowledge in Esau.

2 is a diagram illustrating a peripheral connection configuration of a subscriber transmission apparatus to which an embodiment of the present invention is applied. As shown in FIG. 2, the subscriber transmitter 20 is connected to the switching system 30 through the V5 interface, and the subscriber transmitter 20 is connected to the general telephone 10 of each subscriber. The subscriber station 20 performs signal detection from the general telephone 10 and delivers it to the switching system 30 in the form of a standardized message according to the V5 interface. In addition, when a message is received from the switching system 30 through the V5 interface, the message is decoded to signal the subscriber.

The subscriber station 20 is divided into three tasks according to an embodiment of the present invention to perform the above operation. That is, as shown in FIG. 2, the subscriber transmitter 20 includes a signal detector 24, a signal transmitter 26, and a V5 interface 28. The signal detector 24 and the signal transmitter 26 may belong to the signal manager 22.

First, the V5 interface unit 28 is a task for exchanging a formatted message through a specific channel of an E1 link with an exchange system 30 as recommended in ETS 300 324-1 and ETS 300 347-1. Receives information about the signal transition state of 10, forms and delivers a prescribed message to the switching system 30, receives a signal to the general telephone 10 from the switching system 30 as a message, and decodes the corresponding message. It transmits the signal to the signal transmission unit 26 and causes the signal transmission unit 26 to transmit a signal to the general telephone 10.

The signal detector 24 is composed of a polling task. The signal detector 24 continuously monitors a signal transition state of all connected subscriber general telephones 10. The signaling unit 26 receives the ring transmission information from the V5 interface unit 28 when receiving an incoming call from the switching system 30 to the general telephone 10, and is responsible for ring transmission or ring transmission to the subscriber.

Hereinafter, operations of the signal detector 24 and the signal transmitter 26 will be described in detail with reference to the accompanying drawings. 3 is an operation flowchart according to an embodiment of the present invention of the signal detection unit in the subscriber transmission apparatus of Figure 2, Figure 4 is an operation flowchart according to an embodiment of the present invention of the signal transmission unit in the subscriber transmission apparatus of FIG.

The signal detection unit 24 monitors the signal transition states of all subscribers from the first subscriber to the nth subscriber and informs the switching system 30 of the signal transition state to the V5 interface unit 28 only when there is a change. Referring to FIG. 3, first, the signal detector 24 initializes the polling task and initializes the butter at the initial stage. Then, in step 40, the signal detector 24 sets the subscriber to be checked for the signal transition state as the first subscriber, and proceeds to step 42. In step 42, the hook on / off state of the general telephone 10 of the second subscriber is read. Thereafter, whether the hook on / off state is the same as the previous state is different from step 44, and if it is the same, proceeds to step 50, and if it is different, proceeds to step 46. In step 46, the current hook on / off state is stored in the internal buffer, and the like is stored as the previous state. Thereafter, in step 48, the hook-on / off state is notified to the V5 interface unit 28 so that the V5 interface unit 28 is notified to the switching system 30. In step 50, if the subscriber checking the current signal transition state is the last subscriber, and if it is the last subscriber, proceed to step 40 to set the subscriber to check the signal transition state as the first subscriber and repeat the above process. Will proceed. On the other hand, if the subscriber currently inspected in step 50 is not the last subscriber, then proceeds to step 52 and sets the subscriber to be checked for the signal transition state as the next subscriber of the current subscriber, and then proceeds to step 42 to signal the corresponding subscriber. The above process of checking the transition state is repeated. In the above-described process, the operation of the signal detector 24 is performed.

On the other hand, when the signal transceiving unit 26 receives an incoming call from the switching system 30 to the general telephone 10, it receives the information on the ring transmission from the V5 interface unit 28 and takes charge of the ring transmission or ring transmission of the subscriber. Referring to FIG. Run the transfer task and initialize the buffer, and then check if there is a message received in step 60. If there is a message received, proceed to step 62. In step 62, it is checked whether the received message is a ring transmission message. In step 64, it is checked whether the current state of the general telephone 10 of the subscriber is hooked on. This state can be confirmed by confirming the signal transition state detected and stored by the operation of the signal detector 24 as shown in FIG. In step 64, if the current state of the general telephone 10 is checked and the hook is on, the process proceeds to step 60, and if the hook is off, the process proceeds to step 66. In step 66, the subscriber transmits a ring to the general telephone 10 of the subscriber, and proceeds to step 60 to repeat the above process. If the message received in step 62 is not a ring transmission message, the process proceeds to step 70. In step 70, it is checked whether the received message is a ring transmission stop message. If the message is not a ring transmission stop message, the process proceeds to step 60, and if the ring transmission stop message is repeated, the process proceeds to step 72. In step 72, the ring transmission is stopped to the subscriber's general telephone 10, and then the process proceeds to step 60 to repeat the above process. In the same manner as described above, the operation of the signal transmitter 26 is performed.

With the configuration and operation as described above, the general telephone signaling transmission of the subscriber transmission apparatus according to the characteristics of the present invention is performed.

As described above, the present invention provides a signal monitoring process that continuously monitors the signal transition status of all subscribers in the subscriber transmission window and informs the switching system of the subscriber, and sends out a ring according to the signal transition status when receiving from the switching system. By having a process of controlling, it provides a signaling delivery method of the switching system and the general telephone.

Claims (2)

In the signaling processing method of subscriber transmission window connecting a switching system supporting a V5 interface and a general telephone, A signal monitoring process for continuously monitoring the general telephone signal transition status of all subscribers and informing the switching system of the signal transition; And a ringing control of a corresponding telephone in accordance with the signal transition state when the incoming call is received from the switching system to the subscriber. The method of claim 1, wherein the signal monitoring process comprises sequentially monitoring the signal transition states of the general telephones of all the subscribers in comparison with the previous state, and if there is a change with the previous state in the comparison, Signaling processing method comprising the step of informing.