JPS609294A - Circuit abnormality informing method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] @Ming technology field [This issue] relates to the method of notification of reminiscence 11q.

TECHNICAL BACKGROUND Even if a caller takes his or her telephone off-hook and selects the other party to dial, the call may not start normally. The first is when the other party is busy, the second is when the line network to which the other party belongs is congested and becomes equivalent to a busy line, and the third is when there is a line abnormality. Line abnormalities are caused by accidents or failures in line circuits, transmission lines, etc., and usually it takes a great deal of time to restore them. The present invention particularly refers to the third case.

Prior Art and Problems Generally, when a line abnormality occurs, a voice response service is provided to the caller to notify them that they should wait for a while.

This type of guidance is common on public telephone networks.
This is usually done through a large exchange. However, in a company's dedicated line network, at most a small PBX acts as a switching center.
The only thing that exists is something close to that, and we don't really have the luxury of disseminating such information. Then, when a line abnormality occurs in such an in-house private line network, the caller must wait until the call can be made again without knowing the cause. Also, during this time, the general department of the dedicated line network will be busy with similar inquiries from each terminal. This is the problem.

OBJECTS OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a line abnormality notification method that allows a caller to know about a line abnormality without adding additional hardware.

In order to achieve the above object, the present invention includes at least a synchronization detection section in the telephone control device of each digital telephone.
We focused on the fact that the synchronization detection section always synchronizes with the central father switch when not on a call, and exchanges data while synchronizing with the synchronization detection section in the call control device of the other party during a call. When the synchronization detection unit detects out of synchronization due to a line abnormality, it generates an alarm sound that is different from the normal busy piece, and also sends line abnormality information to the lower 9 lines, and on the other hand, When there is a line abnormality in the lower line, the synchronization detection unit of the other party detects the out-of-synchronization, and the other party itself generates an alarm sound that is different from the normal busy tone. be.

Embodiment of the Invention FIG. 1 is a schematic diagram showing a simple example of a telephone system to which the present invention is applied. In this figure, the digital telephone system 10 includes a father switch 11, each line 12-A,
12-B, 12-C, . . . to each digital telephone 14-A, 14-B.

14-C... Mother's call control device 13-A, 13-B.

Connect to 13-C... Note that U and D attached to each line in the figure represent an uplink and a downlink, respectively.

FIG. 2 is a block diagram showing a detailed example of the mobile phone control device shown in FIG. 1. Note that the call control device 13-A.

Since 13-B, 13-C, . . . all have the same configuration, 13-A is shown as a representative. The call control device 13-A is shown in FIG.
Controls data exchange between A and telephone 514-A.

Among these, the switching section 22, the alarm generation section 23, and the seed ring bottle section 28 are different from the conventional one. However, the focus of the present invention is on the synchronization detection section 27 in the figure.

In a digital telephone system, it is common to configure a completely synchronous network, and for this reason, when not making a call, the exchange tM (shown in 11) and is constantly establishing synchronization. For this purpose, the synchronization detection section 27 is required. Further, during a call, synchronization is established with the synchronization detection section in the device (13) of the selected party's telephone.

Next, we will discuss the operation when a line abnormality occurs.

(1) When uplink 12-A(U) is abnormal.

In this case, no received data RD is supplied from the receiving section 29, and the synchronization detecting section 27 becomes out of synchronization.

This out-of-synchronization is communicated to the control unit (microprocessor) 25, which switches the newly installed switching unit 22 from the N contact in the normal state to the N contact in the abnormal state. The alarm line generating section 23 is connected to this N contact, and this produces a normal busy tone (busy tone).
For example, an alarm sound different from the above is sent out, ``beep beep''. Now, if the caller goes off-hook on handset 14-A, the alarm sound will be
1 to the caller, and here is the caller! Find out about line abnormalities within.

On the other hand, this one-trip abnormality is determined by the transmission of line abnormality information (as a specific pattern (No. , is sent to the lower 9 line 12-A (D) via the sending/1a section 26. This is because it is necessary to notify other callers who made a call to the telephone 14-A. Q line (12-B in Figure 1)
or 12-C) and line 12-A are connected by converter 11 (Fig. 1), the current normal lower 9 line 12-A (
D) is received by the :ll11 speaker's 7-channel ring unit (same as 28 in FIG. 2) of the relevant system. Then, the control section (same as 25 in FIG. 2) detects the off-hook with the hook detection section (same as 24 in FIG. 2) and at the same time switches the switching section (same as 22 in FIG. 2). Then, the alarm sound generator (same as 23 in FIG. 2) sends out an alarm sound. Here, the caller in question is the other party's line 12-A.
Learn about abnormalities. If it is an abnormality in the recollection of the person making the call, it is the same as knowing the line abnormality in the confession mentioned above.
You can hear the alarm sound right after you go off-hook.

FIG. 3 is a diagram showing an operation sequence when a line abnormality occurs within the own line, and FIG. 4 is a diagram showing an operation sequence when a line abnormality occurs at the called party. However, in this case, call 1
! For example, t]) 12-13°13-B in Figure 1,
14-B. The X mark in Figure 3 represents the accident point.

(2) When downlink +Vrl 12-A (D) is abnormal.

In this case as well, synchronization with the exchange cannot be established, so the alarm is sent to the telephone 4J in the same way as the previous example in the above case.
Issued from 14-A. This makes the caller aware of a line abnormality within his or her own line.

However, due to an abnormality on the lower υ side, it is not possible to send the error information in the 8th time to the other party. Then, telephone 14
-8, and the other caller cannot receive the line abnormality information mentioned after the above t4d (step). You may or may not be able to do it.

However, since the line connection between the caller's side and the telephone 14-A side is not established normally, the synchronization detection unit (same as 27 in Figure 2) on the caller's side of the caller detects an out-of-synchronization. A state equivalent to that shown in FIG. 3 is reached, and an alarm sound is emitted. This is an alarm sound that is heard after the caller goes off-hook and dials, so it is distinguished from a line abnormality within the own line (an alarm sound is heard immediately after going off-hook).

(3) When both lines 12-A(U) and 12-A(D) are abnormal.

Both cases (1) and (2) above are true, and an alarm sound is emitted to both parties.

In this way, it is possible to notify the caller of the abnormality.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, as described in detail, all callers attempting to connect to a faulty line can be notified of a faulty line without any significant hardware changes. Can be notified.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing a simple example of a telephone system to which the present invention is applied, Fig. 2 is a block diagram showing a detailed example of the calling side fijj device in Fig. FIG. 4 is a diagram showing an operation sequence when the line of the called party is abnormal. 10...Digital telephone system, 11...Switchboard, 12-A, 12-B, 12-C...Line, 13-A
. 13-B, 13-C... Call control device 4.14-A. 14-B, 14...C...Digital telephone, 2
2... Switching section, 23... Alarm sound generation section, 25.
...control section, 26...transmission section, 27...synchronization detection section, 28...shidan ring section, 29...reception section, U.
...up line, D...down line. Figure 3 Figure 4

Claims (1)

[Claims] 1, a number of telephones are connected to each other through a call control device provided in each of them and a pair of upper and lower circuits connected to each of them to form a line network, tI ′
4, and each call control device includes a receiving section connected to the upper nine lines, a transmitting section connected to the lower line, and a synchronization detecting section and a signaling section provided between the receiving section and the transmitting section. In the digital telephone system forming a completely synchronous network through each of the synchronization detection sections, each of the call control devices has an alarm generation section, and when any f
f1ij When a line abnormality 176 occurs in the uplink of the pair of uplink and downlink, the out-of-synchronization detecting unit in the call control device connected to the abnormal line detects the out-of-synchronization, and the alarm sound generating unit In addition to causing the telephone to emit an alarm sound, it also transmits line abnormality information from the signaling unit to the downlink via the transmitting unit, while transmitting information to the other call control device that has selected the abnormal line. The signaling section detects the line abnormality information, causes the alarm sound generation section to emit an alarm sound to the '-1 moth, and further transmits the signal to the downlink of any of the upper circuits (and the pair of lower circuits). When a line abnormality occurs, the out-of-synchronization is detected in the synchronization detecting section of the call control device connected to the abnormal line, and the alarm sound generating section causes the telephone to emit an alarm sound. The synchronization detecting unit in the other call control device that reversely twists the abnormal line detects the out-of-synchronization due to the abnormal line, and causes the alarm piece generating unit to issue an alarm sound to the telephone. A conversion abnormality notification method characterized by: