JPS59174054A - Communication controller - Google Patents

Abstract

PURPOSE:To exclude the operation of a tester by giving a test command in a test program to an automatic calling interface circuit, and an originating command to another paired automatic calling interface circuit respectively. CONSTITUTION:Writing registers 13 and 23 hold the signals which are outputted artificially from a network controller NCU by a test program for each of automatic calling interface circuits ACI10 and 20. A multiplexer 11 performs switching based on the test program among the signals supplied from register 13 and 23 and the controller NCU. In addition, reading registers 12 and 22 are provided to read out the answer signal to the signal sent from the multiplexer 11 by the test program and through the paired circuits ACI10 and 20. Thus the paired simulation tests are executed by giving a test command to the circuit ACI10 and an originating command to the circuit ACI20 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a communication control unit (CCU), particularly a network control unit (CCU).
The present invention relates to a CCUK equipped with a plurality of automatic call interface circuits (ACI) for connecting to a switching network using an NCU (NCU).

Conventional CCUs of this type are equipped with a means to test the ACI, and humans operate a tester connected from the outside to transmit signals to the CCU to simulate the operation of the NCU.
The ACI is tested by detecting the CCU's response signal to this signal using a tester.

Such a conventional configuration has the drawback that each time a switch network connection test is performed, it is necessary to take care of the tester and the connection cable and to operate the tester by the tester.

An object of the present invention is to provide a CCU that can eliminate the need for handling the tester and connection cables and for operating the tester by a tester by adding a small amount of logic to the CCU.

A first device of the present invention is a CCU equipped with a plurality of automatic call interface circuits for connecting to a switching network using a network control device, and a pair of automatic call interfaces for each automatic call interface circuit. A circuit is predetermined, and for each automatic call interface circuit, a write register is provided for holding a signal from the network control device that is outputted in a pseudo manner by a test program; a multiplexer for switching a signal from the write register in a related automatic call interface circuit based on a specification of the test program and inputting the signal to the automatic call interface circuit; A read register is provided for the test program to read a response signal of the paired automatic call interface circuit to the signal supplied by the multiplexer, and the test command of the test program, the A simulation test of the paired automatic calling interface circuit is carried out by sending each of the sending commands of the test program to the paired automatic calling interface circuit. .

The second device of the present invention is a CCU equipped with a plurality of automatic call interface circuits for connecting to a switching network using a network control device, and a pair of automatic call interfaces for each of the automatic call interface circuits. an encoder for predetermining a circuit and encoding a signal from the network control device that is outputted in a pseudo manner according to a test program for each automatic call interface circuit; and a pair relationship between the signal from the network control device and the pair relationship. a multiplexer for switching the signal from the encoder in the automatic calling interface circuit of the automatic calling interface circuit based on the specification of the test program and inputting the signal to the automatic calling interface circuit; A read register is provided for the test program to read a response signal of the paired automatic call interface circuit in response to a signal supplied by the automatic call interface circuit, and a test command of the previous self-test program is provided on the automatic call interface circuit side. , characterized in that a simulation test of the paired automatic calling interface circuit is carried out by respectively sending outgoing commands of the test program to the paired automatic calling ink interface-road side. do.

Next, the first invention will be explained in detail with reference to the drawings.

FIG. 1 shows an embodiment of the first invention. Referring to FIG. 1, this embodiment has an ACIIO and a multiplexer 11.
This is a CCU including a line adapter circuit 1 having a read register 12 and a write register 13, an ACI 20, a line adapter circuit 2 having a multiplexer 21, a read register 22, and a write register 23. In the same way as ACIIO is connected to read register 22 and write register 23 to multiplexer 11, in reality, ACI 20 is connected to read register 12 and write register 13 to multiplexer 21, respectively. Omitted to avoid complication.

Signals input from the outside of line adapters 1 and 2 to multiplexers 11 and 21, respectively, are sent to the corresponding NCU of 11.
The signals output from ACIIO and 20 to the outside of line adapters 1 and 2 are input from the host device (central processing unit, etc.) to ACIIO and 20, respectively.
This is a signal that each of the ACIIO and 20 outputs to the corresponding NCU in response to the signal (not shown).

When the communication control program is flowing to the CCU, A
CIIO and ACI20 are each for one line,
This is a well-known circuit that performs an automatic dispensing function. In other words, in the communication control program, the simulation designation SEL is
0'', write registers 13 and 23 are set so that multiplexers 11 and 21 accept the output from the NCU.

When the power of the NCU is turned on, the NCU sends the power supply display PIN to the ACIIQ via the corresponding multiplexer (the normal operation will be explained below regarding the line adapter circuit 1 side, so the multiplexer 11). When a higher-level device makes an automatic call request to ACIIQ, ACIIQ
O outputs a call request CRQ to the NCU, and in response to the call request CRQ, the NCU returns a line busy indication DLO and a next number request PND to the ACIIQ.

When the ACI 10 outputs the next number PND to the higher-level device (not shown), the higher-level device outputs number information DS1. DS2. Data for Ds4 and Ds8 generation is returned to ACllo each time a next number request PND is input. Based on this data, ACIIQ uses the number information DS
I, DS2. DS4 and DS8 are sent to the NCU along with the number display DPR. From next number request PND to number information DSI, DS2. The process leading to DS4 and DS8 and the sending of the number indication is repeated as many times as necessary to represent the calling number. NCU is this series of number information DSI.

DS2. Based on DS4 and DS8, a dial signal is generated to establish line connection.

If the line connection is successfully completed, the NCU sends a connection completion DSC, and if the line connection still fails due to NCU-d or a failure on the line side, the NCU sends a call abandonment ACL.
will be sent back to ACilO.

Now, ACIIlo (ACI20 K Tsui-r is also 1
When testing i1), the connection cables between each of the line adapter circuits 1 and 2 and the NCU are removed, and a test program is run in place of the communication control program in the communication control device. The test program outputs a test command to the ACI 20 on the shimmy rate side, and outputs a sending command to the ACI1'Q on the shimmy rate side.

The test command has a simulation specification SEL of logic "11"
'', and simulated the output from the NCU during normal operation as described above, to display the power supply designation PIN and line in use display D.
LO, next number request PND, and connection completion DSC or call abandonment ACL are set in the write register 23. In response to the simulation designation SEL, the multiplexer 11 accepts the output from the write register 23 and outputs it to the ACIIO. The outgoing command performs the same function as that performed by the host device during the normal operation described above, and transmits number information DSI in response to the next number request PND.

DS2. Noteday ACI for DS4 and DS8 generation
Output to 10, ACll, 0 is number information DSI, DS2
．． Add a number display DPR to DS4 and DSg and set it in the read register 22 @ Next number request P in the test program aS register 23
The ACIIQ timeout test can be performed by measuring the time from when ND is sent until the number display DPR is set in the readout register 2-2 by ACllo. Furthermore, the test program has number information D
SI, DS2. DS4 and DS8 generation data and number information DSI and D read out to the read register 22
S2. By comparing DS4 and DSg, A
It is possible to test the number information generation function of CIIQ.

The outgoing command also terminates the test program when the test program sets the connection completion DSC in the write register 23, when the call abandonment ACL is set, and when neither the connection completion DSC nor the call abandonment ACL is set. ACIIQ
The normality of the actions to be taken in each of these cases can be tested. FIG. 2 shows an embodiment of the second invention.

Referring to FIG. 2, this embodiment includes a line adapter circuit 3 including an ACI 30, a multiplexer 31, a read register 32, an encoder 33, and a switching register 34, an ACI 40, a multiplexer 41, and a read register 42. , encoder 43, and switching register 44
This is a communication control device including a line adapter circuit 4 provided with. Read register 42 from ACI30, encoder 4
3 from the multiplexer 31, from the ACI 40 to the encoder 43, and from the switching register 44 to the multiplexer 31
In fact, read register 32 and encoder 33 are connected to 1AcI4Q, respectively.
From multiplexer 42, from ACI 30 to encoder 3
3 and switching register 34 to multiplexer 4], but are omitted to avoid complicating the drawing.

In this embodiment, an encoder 33, a switching register 34, an encoder 43, and a switching register 44 are provided in place of the write registers 13 and 23 in the embodiment of the first invention shown in FIG. .

When testing ACIao and 40, respectively, the encoders 33 and 43 input number information DSI and DS2, which generate ACI30 and 40, respectively, according to the test program.
．． DS4 and DSg) and generates a power indicator PIN, line busy indicator DLO, next number request PND, and connection completion DEC or call abandonment ACL, and sends them via multiplexers 41 and 31, respectively (test At times, the switching registers 34 and 44 output a logic "1" simulation designation SEL) and supply it to the ACIs 40 and 30.Other operations are shown in FIG. 1 described above. Since the operation is the same as that of the embodiment of the first invention, the explanation will be omitted.

FIG. 3 shows all valid combination states of power supply indicator PIN, line busy indicator DLO, next number request PND, connection completion DSC, and call abandonment ACL, number information DSI, DS2. DS
4 and the contents of DSg are shown.

In this embodiment, the encoders 33 and 43 have number information DSI, DS2. DS4 and DSg are encoded, but there are a total of 5 for power display PIN, line busy display DLO primary number request PND, connection completion and call abandonment ACL.
In order to generate signals, the number information DSi, DS2
．． Any three signals may be selected in advance from a total of four signals, DS4 and DSg, and a signal of 1 may be encoded in these 31 signals.

Note that the embodiments shown in FIG. 1 and FIG.
Although the CCU has an automatic call interface circuit for lines, the first invention and the second invention are not limited to this, and can be easily applied to a CCU having an automatic call interface circuit for any plural lines. .

According to the present invention, by employing the above-described configuration, the test program performs the ACI test, so that it is possible to eliminate the need for handling the tester and test connection cable and operating the tester, which were required in the past. It becomes like this.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the first invention, FIG. 2 shows an embodiment of the second invention, and FIG. 3 shows a diagram for explaining the operation of the embodiment shown in FIG. 1.2. '3.4 Line adapter circuit, 10,2
0゜30.40...Automatic call interface circuit, 11゜21.31.41...Multiplexer, i2.22, 32゜42...Read register, 13.23 ...Write register, 24, 25
, 26.27.28 AND circuit, 33.43.
・Encoder, 34.44 Switching register, PIN
...Power display, CRQ...Call request, DL
O...Line in use display, PND...Next number request, DPR...Number display 1. I) Sl, D82. DS
4゜DS8...Number information, DSC/Connection completion/ACL/Call abandonment, SEL...Simulation specification. Agent Patent Attorney Uchi Hara Sound Figure 1 Figure 2 V PND DLOAQL DSC Off i7 Off Off Off Off i7 K7 O7 /rn Off Off On On Off Off Off 'in On Off Off On Off , On PIN DSI DS2 DS4 DSL Off 0 0 0 0 on 1 0 0 0 on 1 0 1 0 on 1 0 1 1 saino 1 1 0 0 on (10t 3 Figure

Claims (2)

[Claims] (1) In a communication control device equipped with a plurality of automatic call interface circuits for making a connection operation to a switching network using a network control device, a pair of automatic call interface circuits for each of the automatic call interface circuits is prepared in advance. A write register for holding a signal from the network control device that is output in a pseudo manner by the test program; and an automatic connection between the signal from the network control device and the pair relationship. a multiplexer for switching the signal from the write register in the call interface circuit based on the designation of the test program and inputting the signal to the automatic call interface circuit; A read register is provided for the test program to read a response signal of the paired automatic call interface circuit to the signal supplied by the test program, and the test command of the test program, the Communication control characterized in that a simulation test of the automatic call interface circuit in the pair relationship is carried out by respectively sending commands for sending out of the test program to the automatic call interface circuit in the pair relationship. Device. (2) In a communication control device equipped with a plurality of automatic call interface circuits for making a connection operation to a switching network using a network control device, a pair of automatic call interface circuits for each of the automatic call interface circuits is prepared in advance. and an encoder for encoding a signal from the network control device that is output in a pseudo manner according to a test program for each automatic call interface circuit; and an automatic call between the signal from the network control device and the pair relationship. a multiplexer for switching the signal from the encoder in the interface circuit based on the specification of the test program and inputting the signal to the automatic call interface circuit; A read register is provided for the test program to read a response signal of the paired automatic call interface circuit to the supplied signal, and the automatic call interface circuit side includes a test command of the test program, the paired automatic call interface circuit, and a read register for reading the response signal of the paired automatic call interface circuit to the supplied signal. A communication control device characterized in that a simulation test of the pairwise Ω automatic calling interface circuit is carried out by respectively sending outgoing commands of the test program to the automatic calling interface circuit side of the Ω automatic calling interface circuit.