JPH0569338B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a poor call failure detection method, and particularly to a call failure failure detection system that outputs failure information of a call path in which a call failure occurs during a call in an automatic private branch exchange. Regarding detection method.

[Conventional technology]

Traditionally, when an extension subscriber encounters a poor call, such as a low call level or one-way conversation while talking to the other party through a trunk, the extension subscriber must report the situation to the automatic private branch exchange equipment maintainer and contact them. The maintenance engineer who received the information was able to grasp the failure status by capturing the many trunks one by one.

[Problem that the invention seeks to solve]

Generally, maintainers of automatic private branch exchange equipment grasp the condition of trunks through periodic tests and perform so-called preventive maintenance, but problems such as a drop in the level of one-way communication or one-way communication that may be encountered during a call can be avoided. These periodic tests could not detect defects, and as mentioned above, in the past, investigations were conducted after receiving reports from extensions, which not only took a lot of time to discover, but also caused problems such as unstable trunks and call path switches. The disadvantage was that it was difficult to search for.

[Means for solving problems]

The call failure failure detection method of the present invention is applied to an automatic private branch exchange system that includes a call path switch that accommodates an extension line and a trunk that interfaces with an outside line. call state storage means for storing connection state information including the number of the call route switch and the number of the trunk to the other party; and connection information output means for reading and outputting the contents of the storage means.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of an automatic private branch exchange device showing one embodiment of the present invention, and FIG. 2 is a memory block diagram showing an example of the contents of the memory in FIG.

In Fig. 1, the automatic private branch exchange equipment includes a call path switch (hereinafter referred to as SW) 2 that accommodates an extension line 1, a trunk (hereinafter referred to as TRK) 3 that interfaces with an outside line (central office line or dedicated line), and a calling register (hereinafter referred to as TRK).
ORT) 4, a central control unit (hereinafter referred to as CC) 5 that controls connection processing within the switching equipment, a memory (hereinafter referred to as M) 6 as a means for storing call status, and a printer (hereinafter referred to as M) 6 that outputs and displays the contents of M6 according to instructions from CC5. below
PRT) 7, and M6 has accommodation position information (hereinafter LEN0, 1,
. . . ), connection state information such as the trunk and call path switch number currently in use for a call with this extension is stored.

Next, the operation of this embodiment will be explained.

Extension 1, SW2, TRK due to a call from extension 1 to TRK3 or an incoming call from TRK3 to extension 1
When connection path 3 is set in a well-known manner, CC
5 stores connection status information such as the trunk number of TRK3 and the communication path switch number corresponding to link a of SW2 in the storage area corresponding to LEN0 of M6. When extension 1 and TRK 3 encounter a call failure such as a drop in the call level or one-way call during a call via the above-mentioned connection path, extension 1 performs hooking. CC5 detects this footing using a generally known method.
SW2 is controlled to set link b, and extension 1 hears the dial tone from ORT 4 via link b. Thereafter, when extension 1 dials a predetermined notification special number, CC 5 receives a notification signal from ORT 4 in a generally known manner. Based on this notification signal, CC5 reads the contents of the storage area corresponding to LEN0 of M6, and uses well-known technology to read the contents of the storage area corresponding to PRT7.
(For example, ``A call failure occurred during a call between extension number NXX and trunk number XX, and call path switch number XX.'').

In this embodiment, extension 1 is a regular phone and a special number for notifying a call failure encounter is dialed. However, when extension 1 is a multi-function phone, a notification key is provided, and pressing this key sends a notification signal to CC5. It may also be sent.

〔Effect of the invention〕

As explained above, the present invention outputs connection status information such as the trunk information used for the call and the call route switch number by the operation of the extension subscriber who encounters a call failure, so that maintenance personnel can easily identify the failure location. This has the effect of making analysis easier.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an automatic private branch exchange device showing one embodiment of the present invention, and FIG. 2 is a memory block diagram showing an example of the contents of the memory in FIG. 1...Extension, 2...Call path switch (SW), 3...
Trunk (TRK), 4...Outgoing register (ORT),
5...Central control unit CC, 6...Memory M, 7...Printer PRT.

Claims (1)

[Claims] 1. In an automatic private branch exchange system that includes a call path switch that accommodates an extension line and a trunk that interfaces with an outside line, the number of the call path switch that is being used for this call and the party to whom the call is being made are made in response to the extension call being made. call state storage means for storing connection state information including a number of the trunk to the telephone; and connection information for reading and outputting the contents of the call state storage means in response to a notification signal from the extension that encountered a call failure during the call. A call failure failure detection method characterized by comprising: an output means.