JPH01218198A - Digital in-band control device - Google Patents

Abstract

PURPOSE:To easily identify the occurrence of a fault with low cost by combining a digital signal processing function and an in-band processing function and providing a switch circuit as well as an in-band signal transmission/reception circuit. CONSTITUTION:In the case of receiving an in-band signal information, the in- band signal information from the opposite station comes through a digital trunk 6, subjected, under the control of a controller 2, to a switch circuit 3, and is received by an in-band signal reception circuit 4. The controller receiving an in-band signal transmission instruction, connects the switch circuit 3 and the trunk 6 with each other, and at the same time, outputs a transmission instruction to an in-band signal transmission circuit 5 through a control line 9. Thus the digital signal processing function and the in-band processing function are combined together, and the in-band signal transmission/reception circuit as well as the in-band processing function are provided. As a result, the title device is made compact and of low cost, and the occurrence of a fault can easily be identified.

Description

[Detailed description of the invention] [Industrial use! ! ? ] The present invention relates to a digital exchange, and more particularly to a digital in-band signal control device.

[Prior Art] Conventionally, this type of control device has been equipped with a digital signal processing device and an in-band signal processing device separately.

[Problems to be solved] In the conventional control device described above, the in-band control device and the digital signal processing device were installed separately and connected in series. This has the problem that it is difficult to distinguish whether the fault is in the control device or the digital signal processing device, and it is also expensive.

The present invention has been made in view of the above-mentioned problems, and aims to provide an inexpensive digital in-band control device that is easy to identify when a failure occurs.

[Means for Solving Problems] In order to achieve the above object, the digital inband signal control device of the present invention includes a plurality of digital trunks that terminate digital lines, a plurality of digital trunks, an inband signal transmission circuit, and an inband signal control device. It is equipped with a switch circuit that connects the receiving circuit, a control device that controls these switch circuits, an in-band signal transmitting circuit, and an in-band signal transmitting circuit, and under the control of this control device, the in-band signal receiving circuit Connect the receiving end of the digital trunk to the digital trunk to receive the inband signal when it comes in from the digital trunk, and when sending out the inband signal, connect the inband signal output path and the digital trunk to receive the inband signal. It has a configuration that sends out band signals.

[Embodiment] Next, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment.

The digital in-band control device 1 of this embodiment includes a control device 2. It consists of a switch circuit 3, an in-band signal receiving circuit 4, an in-band signal transmitting circuit 5, and a control line 9, and has both a digital signal processing function and an in-band processing function.

6 is a digital trunk connected to the switch circuit 3; 7 is a time division switch connected to the switch circuit 2 via a signal line 10; and 8 is a central processing unit connected to the time division switch 7.

The control device 2 is connected to a switch circuit 3 through a control line 9. It is connected to an in-band signal receiving circuit 4 and an in-band signal transmitting circuit 5, and controls each of these circuits.

Next, the operation will be explained.

When receiving in-band signal information, the in-band signal information from the other station is received by the in-band signal receiving circuit 4 via the switch circuit 3 under the control of the control device 2 via the digital trunk 6. do.

The information received by the in-band signal receiving circuit 4 is received by the control device 2 via the control line 9, and is further received by the switch circuit 3. Signal line 10. and is transferred to the central processing unit 8 via the time division switch 7. At this time, the receiving side of the digital trunk 6 is the switch circuit 3
Connect to the in-hand signal receiving circuit 4 via
It may be possible to receive it at any time.

Conversely, when sending out an in-band signal, the central processing unit 8 sends an in-band signal sending command to the control device 2 via the time division switch 7, the signal line 10°, and the switch circuit 3.

Upon receiving the in-band signal transmission command, the control device 2 connects the switch circuit 3 and the digital trunk 6, and at the same time issues a transmission command to the in-band signal transmission circuit 5 via the control line 9.

As a result, the inband signal information from the inband signal sending circuit 5 is sent to the digital trunk 6 via the switch circuit 3, and then sent to the partner station.

[Effects of the Invention] As explained above, the present invention combines a digital signal processing function and an in-band processing function, and is provided with an in-band signal transmitting/receiving circuit and a switch circuit. This has the effect of making it easy to identify when it occurs.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment. l: Digital in-band control device 2: Control device 3: Switch circuit 4: In-band signal receiving circuit 5: In-band signal transmission circuit 6: Digital trunk 7: Time division switch 8: Central processing unit Agent: Patent Attorney Kihei Wataribe

Claims (1)

[Claims] A plurality of digital trunks that terminate digital lines, a switch circuit that connects the digital trunks with an in-band signal transmitting circuit and an in-band signal receiving circuit, and these switch circuits, the in-band signal transmitting circuit, and the in-band signal transmitting circuit. Under the control of this control device, the receiver side of the digital trunk is connected to the in-band signal receiving circuit to receive the in-band signal when it comes from the digital trunk. ,
A digital inband signal control device characterized in that when an inband signal is sent out, an inband signal sending circuit and a digital trunk are connected to send out the inband signal.