JP3128922B2 - Switching device time-division switch controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a time-division switch control device for an exchange, and more particularly to a time-division switch control device for an exchange that performs initial setting control of the time-division switch.

[0002]

2. Description of the Related Art Conventionally, in a time-division switch control device of an exchange, time and minute as a countermeasure against a failure such as a program error.
The initial setting control of the split switch depends on the degree of abnormality in the exchange system.
Depending on whether you want to disconnect / initialize all calls, and
Call is rescued and calls in the process of other connections are disconnected / initialized.
May be specified. In particular, the initial stage of relieving only active calls
In setting, in order to prevent service degradation to subscribers as much as possible, software for each subscriber is restored by software to restore only the communication path in the connection process except for the communication path in a stable communication state The state is checked, and a reset (initial setting) order is transmitted for each communication path that requires resetting, and the communication path is released.

[0003]

By the way, in a conventional time-division switch control device for an exchange, a program change
In the initial setting, which relieves only calls during a call as a countermeasure at all times , check the connection status of the call for each subscriber with software, select the call path that needs to be released and reset, and Was instructed to reset. for that reason
In addition, while minimizing service degradation to subscribers (opening a busy path) as much as possible, it is necessary to initialize the system immediately and restart the operation within a short time. Requires a lot of processing,
In addition, processing time is long, and the burden on software is low.
The disadvantage was that it was very large.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a time-division switch control device for an exchange which reduces the amount of software processing and processing time when initializing the time-division switch. With the goal.

[0005]

In order to achieve the above-mentioned object, a time-division switch control device for an exchange according to the present invention comprises a communication path state for holding a connection state (connection destination information) of each communication path in the time-division switch. In addition to the holding memory and the communication path information provided in the holding memory and indicating the connection state of the communication path, a call connection process (call processing, signal reception, call processing, etc.). A call information holding unit for holding call information indicating a call connection transition state), and a call path control unit for controlling release and holding of a call path according to the call information in the holding memory when the time division switch is initially set. There is a configuration.

If necessary, the communication path control means has a rewriting function for rewriting the communication path information in the holding memory based on the call information held by the call information holding section in the holding memory.

[0007]

According to the time-division switch control device for the exchange having the above-mentioned structure, the call state information in the call state holding memory of the time-division switch is not only the call path connection information but also the call information indicating the call connection process for each subscriber. At the same time, when the time-division switch is initialized, according to the call information in the memory in the time-division switch, release control and initialization of the communication path are performed only by hardware. Therefore, the software only needs to receive the initial settings according to the degree of system abnormality.
Software processing can be reduced and processing time can be reduced.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a time division switch and a time division control device according to an embodiment of the present invention.

In the figure, reference numeral 100 denotes a time division switch, for example, subscribers A to D, a signal receiver / signal transmitter 2
The connection processing of the terminal circuit 300 and the like is performed based on the communication path information.

Reference numeral 500 denotes a holding memory, which is a communication path information storage unit 50 for storing communication path information indicating the connection state of the communication path.
1 and a call information holding unit 502 for holding call information indicating the connection process.

Reference numeral 400 denotes a selector, which is a central control unit.
(Not shown) from the channel control order (including
) 401 and call information from the subscriber call information holding unit 502
Is a selection circuit. Call path for setting a normal call path
In the case of a control order, a central control unit (not shown)
The communication path control order 401 is selected, and the holding memory 500 is selected.
Holds the contents of the channel control order. Meanwhile, the initial
In the case of the setting order, the subscriber call information holding unit 502 is selected.
And a rewriting function as a communication path control means for rewriting the communication path information in the communication path information storage section 501 based on the call information held by the call information holding section 502.

Next, the operation of the time division control device according to this embodiment will be described. When a call path setting order (call path information) and call information indicating a connection path connection process for each of the subscribers A to D are received from a central control device (CPU: not shown) via a call path control line 401, The call path information is held in the area of the call path information storage unit 501 of the holding memory 500, and the call information is held in the area of the subscriber call information holding unit 502.

The communication paths 101 to 103 of the subscribers A to D accommodated in the time division switch 100 are
Are sequentially read, and the respective communication paths 101 to 103 in the time division switch 100 are set in accordance with the contents.

The setting and change of each of the communication paths 101 to 103 of the time-division switch 100 are realized by rewriting the contents of the communication path information in the communication path information storage unit 501 in the holding memory 500.

That is, in the case of ordinary communication path control, the selector 400 selects the communication path control line 401 to receive information from a central control unit (CPU: not shown).
When the call path initialization order is received via the call path control line 401, the selector 400 sets the subscriber call information holding unit 5
By operating to select the call information No. 02, the contents of the call path information in the call path information storage section 501 are rewritten according to the contents of the call information in the subscriber call information section 502. 101 to 103 can be changed.

For example, the communication path 101 for the subscribers A and B is not changed because it is in a stable state.
When the initial setting order is received, the communication path 101 between the subscribers A and B is not changed at all and the communication path 102 of the subscriber C is opened and the communication path 104 is changed. Is reset to

As described above, by receiving the initial setting order , it is easy to convert the call information into the communication path information, and to change the initial setting range of the time division switch 100. The initial setting of the time-division switch 100 can be changed without changing the processing time or the like.

[0018]

As described above, according to the time-division switch control apparatus for an exchange of the present invention, in addition to the communication path information, the call information in the call connection process of the subscriber is simultaneously held in the holding memory. To prevent failures in the event of a program error, etc.
Time-division switch that only rescues all calls during a call At the time of initial setting of the time-division switch, the call path initialization of the time-division switch is performed independently by referring to the call information (re-setting).
Can be performed, reducing software processing,
Processing time can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a time-division switch control device for an exchange according to an embodiment of the present invention.

[Explanation of symbols]

AB Subscriber 100 Time-division switch 101-104 Communication path 200 Signal receiver / signal transmitter 300 Termination circuit 400 Selector 500 Communication path holding memory 501 Communication path information storage section 502 Subscriber call information holding section 401 Communication path control line

Claims (2)

(57) [Claims] A speech path status holding memory which holds the connection state of each channel according to claim 1 time division in the switch, in addition to the speech path information indicating a connection state provided the speech path in said holding memory, calling , Call connection during signal reception or talking
A call information holding unit for holding the call information indicating the connection process of call is a transition state, when the initial setting of the division switch, opening the speech channel in accordance with the call information in the holding memory, speech path control means for controlling the holding And a time-division switch control device for an exchange. 2. The communication path control means according to claim 1, wherein said call path control means stores the call information in said holding memory based on the call information held by said call information holding unit.
2. The time-division switch control device for an exchange according to claim 1, further comprising a rewriting function for rewriting communication path information .