KR0182640B1 - Apparatus for processing signal or service - Google Patents

Abstract

The present invention is to provide an improved exchange period signal and tone / announcement service processing device in a small electronic switchgear, the present signal and service processing device is a dual structure tones / announcement broadcasting processing in a small electronic switch environment The exchange period signal R2 is implemented in a load distribution structure in which the channel is divided in half. Therefore, it is possible to prevent the phenomenon that the tone / announcement service is interrupted due to a failure and the transmission and reception of signals during all exchange periods are interrupted.

Description

Signal and service processor in small electronic switch

1 is a block diagram of a miniature electrical exchanger having a conventional signal and service processing apparatus,

2 is a block diagram of a small electrical exchanger having a signal and service processing apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

200: signal and service processor 210: first signal and service processor

220: second signal and service processing unit 211: first tone / announcement broadcasting processing means

212: first exchange period signal transmission and reception processing and DTMF processing means

221: second tone / announcement processing means 230: mixing and separating

222: second exchange period signal transmission and reception processing and DTMF processing means

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal and service processing apparatus in a small electronic switching system, and more particularly, to a signal and service processing apparatus for increasing the reliability of the exchange with a redundant and load balancing structure.

The signal and service processing device of the small electronic switchboard has an audible tone transmission signal that informs the subscriber of the call progress, an announcement function that notifies the call failure status, and a pushbutton signal of the subscriber (number press on the telephone), that is, DTMF. In order to perform a function of detecting a signal and a function of transmitting and receiving a signal R2 in the exchange period, as shown in FIG. 1, the audio tone transmission processing and announcement broadcasting processing means 111 and the external processor 100 are performed. The exchange period signal transmission / reception processing and DTMF processing means 112 for receiving an input from the R2 signal to a power exchange and receiving and detecting a DTMF signal transmitted from an R2 or a general telephone transmitted from the power exchange to the external processor 100. It consists of.

The tone / guidance broadcasting processing unit 111 shown in FIG. 1 transmits 16 audible tones and 16 kinds of announcement broadcasting messages over a specific channel of time-division multiplexed sub highway 0 into 32 channels regardless of an external device. It is composed. The exchange period signal transmission / reception and DTMF processing means 112 receives the channel, the type of signals to be transmitted (R2-F, R2-B, DTMF), and digit information from the external processor 100, and transmits the corresponding signal to the corresponding channel. And a function of receiving and detecting an R2 or DTMF signal input to the receiving line of the sub highway 1, and notifying the external processor 100 of the result, that is, the channel, the type of the signal, and the detected information. Perform.

As such, the signal and service processing apparatus 110 provided in the small electric switchboard is provided with one means for performing each function, so that the tone / guidance broadcasting service 111 causes a malfunction and the tone and guidance broadcasting service. Is stopped, and the exchange period signal transmission and reception and DTMF processing means 112 also stop the R2, DTMF transmission and reception function when a failure occurs.

Accordingly, an object of the present invention is to provide a signal and service processing apparatus embodied in a redundant and load-balancing structure in a small electronic exchanger.

A signal and service processing apparatus according to the present invention is a signal and service processing apparatus of a small exchange having an external processor for processing subscriber's digit information and a signal for transmission and reception with a power station, and comprises a redundant control structure, and includes a plurality of tones. And means for providing an announcement message; Distributed processing means connected to an external processor to divide the total channel used to transmit and receive signals during the exchange period in half (1/2) and perform load balancing on signals transmitted through the total channel; And when the switching period signal is transmitted to the power station, the mixed processing result outputted from the distributing processing means is mixed, and when receiving the switching period signal from the power station, the signal for the total channel received is divided in half and distributed processing means. Characterized in that consisting of a mixing and separating means to transmit respectively.

Hereinafter, embodiments according to the present invention will be described in detail.

2 is a block diagram of a small electronic switching system having a signal and service processing apparatus according to the present invention, which transmits digit information generated from the signal and service processing apparatus 200 and subscribers according to the present invention and other exchanges. It is composed of an external processor 100 for providing data for transmission and for processing according to the received data.

The signal and service processor 200 outputs from the first signal and service processor 210, the second signal and service processor 210 and 220, the first signal and service processor 210 and the second signal and service processor 220. The R2 signal and the DTMF signal are mixed and transmitted to the counterpart exchange or the R2 signal and the DTMF signal received from the counterpart exchange are separated and transmitted to the first signal and the service processor 210 and the second signal and the service processor 220. And a separator 230.

The first signal and service processor 210 transmits and receives R2 and DTMF for 16 channels by interworking with the first tone / guide broadcast processing means 211 and the mixer and separator 230 for the conventional tone and guide broadcast processing. The first exchange period signal transmission and reception processing and DTMF processing means 212 to perform the processing, the second signal and service processing unit 220 is the first tone / guide broadcast provided in the first signal and service processing unit 210 The second tone / guide broadcast processing means 221 which is configured in the same manner as the processing means 211 and has a duplex control structure with the first tone / guide broadcast processing means 211 and the above-mentioned first exchange period signal transmission / reception processing and DTMF. And second exchange period signal transmission / reception processing and DTMF processing means 222 for R2 and DTMF signal processing for 16 channels other than the channel processed by the processing means 212.

In the signal and service processing apparatus 200 configured as described above, the tone and guide broadcast transmission function is duplicated between the first tone / guide broadcast processing means 211 and the second tone / guide broadcast processing means 221 regardless of the external device. 16 kinds of tones and 16 kinds of announcement broadcasting messages outputted from the tone / guidance broadcasting processing means which are controlled to be in an active state are time-division multiplexed into 32 channels and are transmitted through the subhighway 0.

Redundancy control between the first tone / guide broadcast processing means 211 and the second tone / guide broadcast processing means 221 controls the first tone / guide broadcast processing means 211 to be set to an active state when the system is reset. do. At this time, if the first tone / announcement processing means 211 is in a normal state, the output signal (EO) is output in the state of '0' is provided to the EI input terminal of the second tone / announcement broadcasting processing means 221. Accordingly, the second tone / guide broadcast processing means 221 maintains the standby state Stand_by since the logic state of the signal applied to the EI input terminal is '0'.

As such, when the active state and the standby state are maintained and a failure occurs in the first tone / guide broadcasting means 211, a logic signal of '0' is output to the SO output terminal of the first tone / guide broadcasting means 211. '0' is applied to the SI input terminal of the second tone / guide broadcast processing means 221. Accordingly, the second tone / guiding broadcast processing means 221 recognizes that switching to the active state is required. At this time, when the second tone / guide broadcast processing means 221 is in a normal state, the second tone / guide broadcast processing means 221 is outputted with '1' to the SO output stage, and thus the first tone / guide broadcast processing means 211. Is sent to the S1 input terminal. Accordingly, the EO output of the first tone / guide broadcast processing means 211 is converted to 1, while the EO output of the second tone / guide broadcast processing means 221 is converted to '0', so that the first tone / guide broadcast means 211 is converted to '1'. The processing means 211 notifies that the second tone / guide broadcasting processing means 221 is set to the active state.

In the redundant control as described above, the operation state output signal EO of the operating device is 0, the failure state output signal SO is 1, the operation state input signal EI is 1, and the failure state input signal SI is Is 1, and EI, EI, EO, and SO of the waiting device are 0, 1, 1, and 1, respectively, and their states may be set differently at design time.

In the present embodiment, the signal transmission / reception and DTMF processing in the exchange period are the R2 method using 32 channels, which is mainly used in this embodiment. Each of them is provided in the same manner so as to be treated.

That is, the first exchange period signal transmission / reception processing and DTMF processing means 212 in the first signal and service processing unit 210 performs R2 and DTMF processing for 16 of 32 channels, and the second signal and service processing unit 220. The second exchange period signal transmission / reception processing and DTMF processing means 222 allow R2 processing and DTMF processing for the remaining 16 channels of the 32 channels.

In more detail, types of channels and signals to be transmitted from the external processor 100 to the first exchange period signal transmission / reception processing and DTMF processing means 212 and the second exchange period signal transmission / reception processing and DTMF processing means 222. When the digit information is delivered, the corresponding processing is outputted to the counter exchange. The output signal is mixed in the mixer and separator 230 and loaded on the 32-channel time-division multiplexed subhighway 1 transmission line and transmitted to the other exchange.

On the other hand, the signal input through the reception line of the subhighway 1 is separated into 1/2 channel in the mixer and separator 230, and the first exchange period signal transmission and reception processing and DTMF processing means 212 and the second exchange period signal transmission and reception processing are performed. And DTMF processing means 222, respectively, and the first and second exchange period signal transmitting and receiving processing means 222 detects an applied signal and reports it to the external processor 202. That is, the type, channel, and digit information of the received signal are reported to the external processor 202.

In this transmission / reception process, the first exchange period signal transmission / reception processing and DTMF processing means 212 transmit / receive 16 channels of channels 0, 1, 4, 5, 8, 9, 28, 29 and the second exchange period signal transmission and reception. The processing and DTMF processing means 222 processes 16 channels of channels 2, 3, 6, 7, 10, 11, ..., 30, 31. In this case, the channels are divided in consideration of the time that can be processed by the digital signal processor (DSP), which is provided in the first and second exchange period signal transmission and reception processing and DTMF processing means 212,222.

As described above, the present invention implements the tone / guidance broadcasting processing means provided in the signal and service processing apparatus of the small electronic switching system in a redundant structure, and separates the R2 transmission / reception channel into 1/2 (16 channels each). By operating in one load distribution structure, it is possible to prevent the interruption of the tone / guidance broadcasting service and the interruption of transmission and reception of all R2 signals due to a failure.

Claims (3)

A signal and service processing apparatus of a small exchange having an external processor (100) which performs signal processing for transmitting and receiving a subscriber's digit information and a large station, comprising: a redundant control structure for providing a plurality of tone and announcement broadcast messages 211, 221; Distributed processing means 212, which is connected to the external processor 100 and divides the total channel used for transmitting and receiving signals during the exchange period in half (1/2) and performs load balancing on the signal transmitted through the total channel. , 222); And transmitting the mixed period result output from the distributed processing means 212, 222 when transmitting the switching period signal to the large station, and receiving the total channel received when receiving the switching period signal from the large station. Signal and service processing apparatus for a small electronic switch, characterized in that consisting of the mixing and separating means for separating the signal for the half and transmits to the distributed processing means (212, 222), respectively. The method according to claim 1, wherein the distributed processing means (212, 222) is separated by a two-channel selection two-channel skip method when the method of transmitting and receiving the signal of the exchange period is an R2 method using 32 channels. First exchange period signal transceiving processing means (212) for allocating channels (0,1,4,5,8,9, ....., 28,29) for signal processing; Allocating 16 channels (2,3,6,7,10,11, ....., 30,31) of the 32 channels except the 16 channels processed by the first exchange signal transmission / reception processing unit 212. And a second exchange period signal transmission and reception processing means (222) for signal processing. 3. The method of claim 2, wherein the channel allocation by the two-channel selection two-channel skip method is performed by the first switching period signal transmission / reception processing unit 212 and the second switching period signal transmission / reception processing unit 222 for the R2 processing. Signal and service processing apparatus for a small electronic switch, characterized in that to take into account the processing time of the digital signal processing circuit provided in each.