KR100315701B1 - Signaling processing method for subscriber transmission device - Google Patents

Abstract

PURPOSE: A signaling processing method for a subscriber transmission device is provided to perform a communication by transmitting a hook-on/off signaling to a switch system through a V5 interface using a general telephone, receiving signaling information from the switch system, and transmitting signaling information to the general telephone. CONSTITUTION: A signal detecting unit(24) reads hook on/off states of a plurality of general telephones, and compares the read state with a previously read state. If the read state is different from the previously read state, the signal detecting unit(24) memorizes the read hook on/off state as a current hook on/off state, converts the current hook on/off state into a V5 message, and transmits the V5 message to a switch system(30). A signal transmitting unit(26) receives the V5 message. In case that the received message is a ring transmitting message, if the state of the corresponding general telephone(10) is in the hook-on state, the signal transmitting unit(26) transmits a ring to the corresponding general telephone(10). In case that the received message is a ring transmission stop message, the signal transmitting unit(26) stops that the ring is transmitted to the corresponding general telephone(10).

Description

Signaling processing method of subscriber station.

The present invention is directed to a line seizure or line release from a subscriber telephone when the telephone system is connected to an equipment supporting an access network which is connected to the switching system via a V5 interface. It detects when the hook is on / off and delivers it to the switching system. Also, when the signaling information from the switching system is received through the V5 interface, the signaling of the subscriber transmission device is provided to ring the subscriber's phone to receive the call. It is about a processing method.

In general PSTN (Public Swithched Telephone Network) network, voice-class service has been developed first. To implement this, DS1 / (E1) (1,544) in accordance with ITU (International Telcommunication Union) G.703 and G.704 standards It has focused on the development of equipment (KD-4 (Korea Digital-4), PCM (Pulse Code Mudulation) 32-T, FLC-A / B) to satisfy the Mbps, 2,048Mbps protocol. In addition, for communication with devices (i.e. exchange <-> exchange, transmission equipment <-> transmission equipment), various protocols (TCP / IP (Transmissioin Control Protocol / Internet Protocol), HDLC (High-level Data Link Control) )), But only a very small amount of maintenance (a few Kbps to tens of Kbps) is an additional feature.

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.

For subscriber service, Office Channel Unit Data Port (OCUDP) for voice service (SLC (Signaling Link Code) -T), narrowband Integrated Services Digital Network (ISDN) (2B + D), and data communication Various channel units are required. 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.

To do this, first, a Higher Data Link Control (HDLC) control processing unit capable of processing and transmitting a large amount of messaged information is required, and in particular, a D channel of ISDN using a link access procedure on the D-channel (LAPD) protocol is used. The problem to deal with 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 an Asynchronous Transfer Mode (ATM) network 211 and general telephone services provided from the PSTN 213 are provided through an HDT (Host) through an exchange 215 of a telephone station 212. Digital Terminal) 216 is sent. 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) may be connected to the subscriber transmission unit. Therefore, it is preferable that various signaling transmissions are made through the V5 interface between the general telephone and the switching system.

Accordingly, an object of the present invention is to exchange hook on / off signaling from a subscriber via a V5 interface using a regular telephone when the generic telephone is connected to a device (subscriber transmitting device) supporting an access network connected via a V5 interface. The present invention provides a signaling delivery method of subscriber transmission equipment for providing subscribers with communication by providing a function such as delivering to a system and receiving signaling information from a switching system to a general telephone.

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 signal detection unit as a task for exchanging a formal message through a specific channel of an E1 link with an exchange system 30, as recommended by the European Telecommunication Standards (ETS) 300 324-1 and the ETS 300 347-1. Receives information about signal transition status such as hook on / off of telephone 10 from 24, forms and delivers the prescribed message with switching system 30, and signals to telephone 10 from switching system 30. It receives a message and decodes the message and delivers it to the signal transmitter 26 so that the signal transmitter 26 transmits the signal to the general telephone 10.

The signal detector 24 is composed of a polling task. The signal detector 24 continuously monitors signal transition states such as hook on / off of all connected subscriber telephones. 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 check 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, various signaling transfers can be made through the V5 interface of the switching system and the general telephone.

Claims (2)

In the signaling processing method of a subscriber transmission window connecting a switching system supporting a V5 interface and a plurality of general telephones, Reading the hook-on / off states of the plurality of general telephones and comparing the same with the previously-read state; if the comparison result is different, the lead-on hook-off state as the current hook-on / off state; Storing the signal; and converting the current hook-on / off state into a V5 message and forwarding the signal to the switching system. Receiving a V5 message from the switching system, and if the current hook-on / off state of the corresponding telephone is hooked on when the received message is a ring-out message, sending a ring to the corresponding telephone. And when the received message is a ring transmission stop message, stopping a ring transmission to the corresponding telephone. The method according to claim 1, wherein the signal monitoring process is repeated sequentially from any one of the plurality of ordinary telephones.