JPH05183581A - Packet automatic reply device - Google Patents

Abstract

PURPOSE:To provide the packet automatic reply device in which the normality of data of an unattended opposite station is confirmed. CONSTITUTION:The packet automatic reply device 1 is accommodated in a prescribed talking terminal of a channel 2 of a packet exchange 3. The packet automatic reply device 1 is provided with termination circuits 11-13 able to process a prescribed level of a communication protocol able to be interfaced with the channel terminal and a processor 15 able to process a communication protocol of a higher level than the level of the channel terminal. The processor 15 replies a call received at the talking terminal from the exchange 3 immediately, sends reception data to the caller upon the receipt of data at the talking terminal and returns immediate interrupt to the exchange 3 upon the receipt of an interrupt command from the exchange 3. Thus, the inter-station line test is implemented up to a packet level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test device between packet exchanges, and more particularly to a packet automatic response device used for a user terminal test connected to the switch and a line test between exchanges.

[0002]

2. Description of the Related Art Conventionally, in a line test between exchanges in a packet switch, the normality of a line has been tested by performing a loopback of its own station or a loopback in a game. Specifically, in this line test, the normality of the line was confirmed by looping back at the layer 1 level and actually connecting the subscriber of the own station and the subscriber of the opposite station at the layer 2 or higher. ..

[0003]

However, in the above-mentioned conventional line test between packet switches, in the case of Layer 2 or higher, it is possible to confirm the actual data normality between the subscriber of the own station and the subscriber of the opposite station. Either the line test is terminated by receiving the call to the other party without doing it, or a person is placed at the game to confirm the normality of the data, and the test of the line data, facility, etc. is performed unattended at the game. There was a drawback that it was impossible to do.

It is an object of the present invention to solve the above-mentioned drawbacks and to provide a packet automatic response device capable of confirming the data up to the normality by playing the game unattended.

[0005]

In order to achieve the above object, the packet automatic response device of the present invention is a device which is accommodated in a predetermined communication path terminal of a communication path of a packet switch, It is characterized in that it is provided with a terminating circuit capable of processing a certain level of communication procedure capable of interfacing and a processor capable of processing a communication procedure of a higher level than this level.

Here, the processor immediately responds when an incoming call is received from the exchange, and when the data is received at the call terminal thereafter, the processor transmits the received data to the calling side, and when the disconnection instruction is received from the exchange. Immediate disconnection is sent back to the exchange.

The terminating circuit processes a layer 1 terminating circuit for processing a first level communication procedure, a layer 2 terminating circuit for processing a second level communication procedure, and a third level communication procedure. Layer 3 termination circuit.

According to the present invention, an unattended circuit test is performed by enabling communication at each level, immediately responding when an incoming call is received from the exchange, and when the data is received thereafter, the received data is directly transmitted to the calling side. It enables data level.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a packet automatic response device of the present invention. FIG. 1 is a trunking configuration diagram showing a packet test using the packet automatic response device of the present invention, and FIG. 3 is a sequence diagram for explaining the test operation of the configuration of FIG.

The packet automatic response device 1 shown in FIG. 1 is accommodated in the line 3 of the packet switch 2. The packet automatic response device 1 includes a layer 1 termination circuit 11, an International Telegraph and Telephone Consultative Committee (CCITT) Recommendation X. 25 compliant layer 2 termination circuit 12 and CCITT Recommendation X.25. 25-compliant layer 3
And a terminating circuit 13. Further, the packet automatic response device 1 includes a processor 15 that processes layers 4 and above,
A memory 16 for storing a program and a work area for operating the processor 15, and a bus 17 as an input / output interface between the layer 3 termination circuit 13 and the processor 15 are provided.

In FIG. 2, the local exchange 4 and the remote exchange 3 are connected via lines 5, 6 and 7. Further, the local exchange 4 accommodates the packet test terminal 8 and the remote exchange 3 accommodates the packet automatic response device 1. Further, the packet test terminal 8 has a function of designating a line to be used for the local exchange 4 in advance.

In such a configuration, when the normality test of the line 5 is performed, if the line 5 is designated from the packet test terminal 8, the CR packet from the packet test terminal 8 passes through the local exchange 4 and the line 5. Arrives at the remote exchange 3.
Upon receiving this, the remote exchange 3 sends a CN packet to the packet automatic response device 1. Packet automatic response device 1
Then, the incoming CN packet shown in FIG. 3 is processed by the layer 3 termination circuit 13, and the incoming call is notified to the processor 15 via the bus 17. The processor 15 instructs the layer 3 termination circuit 13 to make an immediate response, and returns the response CA packet to the remote exchange 3. Upon receiving this, the remote exchange 3 sends a response CC packet to the local exchange 4. As a result, the local exchange 4 returns the received CC packet of the response to the packet test terminal 8. Therefore, the packet test terminal 8 can confirm that it is connected to the packet automatic response device 1.

Then, the packet test terminal 8 transmits data (DATA) to the local exchange 4. This data is received by the packet automatic response device 1 of the other party from the local exchange 4 through the exchange device 3, but the packet automatic response device 1 returns it as it is. This return data is received by the packet test terminal 8 via the remote exchange 3, the line 5, and the local exchange 4. The packet test terminal 8 compares the transmitted data with the received data to confirm the normality of the line and data.

In this way, the normality up to the packet level of the line between the local exchange 4 and the remote exchange 3 can be confirmed.

As described above, the packet automatic response device 1 is accommodated in an arbitrary communication channel terminal of the communication channel of the remote exchange 3, and the automatic packet response device 1 connected to the communication channel terminal is provided with a switch. There is provided a layer 1 termination circuit 11 capable of interfacing with the communication channel terminal of CCITT, CCITT recommendation X25 layer 2, termination circuits 12 and 13 of layer 3, and a processor 15 for processing layers 4 and above. Also,
In the packet automatic response device 1, the processor 15
According to the incoming call procedure indicated by CCITT Recommendation X25 from the remote exchange 3, when a call arrives at the terminal, an immediate response is made. When data is received after that, the received data is sent as is to the originating side, and a disconnect instruction is received from the remote exchange 3. In such a case, an immediate disconnection is returned to the remote exchange 3 so that in the inter-station test of the packet exchanges 1 and 3, even if the remote station 1 is an unmanned station, the line test of the inter-station 1, 3 from the own station 3 is performed at the data normal level Can test up to.

[0017]

As described above, according to the present invention, the packet automatic response device is provided in the opposite station to enable automatic response. Therefore, in the inter-station test of the packet exchange, even if the opposite station is an unmanned station, There is an effect that the line test can be tested up to the data normality level.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a line test using an example of the present invention.

FIG. 3 is an operation sequence diagram of the same line test.

[Explanation of symbols]

 1 Packet Automatic Response Device 3 Packet Switch (Personal Switch) 4 Local Switch 5-7 Line 8 Packet Test Terminal 11 Layer 1 Termination Circuit 12 Layer 2 Termination Circuit 13 Layer 3 Termination Circuit 15 Processor

Claims (3)

[Claims] 1. A device accommodated in a predetermined communication path terminal of a communication path of a packet switch, which is capable of interfacing with the communication path terminal and capable of processing a communication procedure of a certain level; An automatic packet response device, comprising: a processor capable of processing a higher level communication procedure. 2. The processor immediately responds when an incoming call is received from the exchange to the call terminal, then transmits the received data to a calling side when data is received at the call terminal, and issues a disconnection instruction from the exchange. The automatic packet response device according to claim 1, wherein when the packet is received, the immediate disconnection is returned to the exchange. 3. The terminating circuit includes a layer 1 terminating circuit that processes a first level communication procedure, a layer 2 terminating circuit that processes a second level communication procedure, and a third level communication procedure. The packet automatic response device according to claim 1, further comprising a layer 3 termination circuit for processing.