JPS633552A - Transfer numeral conversion system - 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] [Field of Industrial Application] The present invention relates to a method for converting transferred numbers in an automatic switching device, and in particular, a system in which the numbers sent to the next switching device are registered in advance to correspond to the next switching device. This relates to a transfer number conversion method in which the numbers are converted into other numbers before being sent out.

[Conventional technology]

Conventional automatic switching equipment uses the "D1
0 type automatic switchboard part 9 switching center program (part 1) - call processing execution management program - (Telecommunications Mutual Aid Association 1978
As shown on pages 296-296 of ``K'' (published on May 10, 2013), among the received selected digits, the digits that are unnecessary in the next switching equipment where the selected outgoing line terminates are deleted. It is now sent out. That is, the digits sent to the next exchange are generally the received digits themselves, or
Or it is part of that.

[Problem that the invention seeks to solve]

However, in the conventional technology, no consideration is given to the case where the received numbers required by the next switching device are changed, and when a large number of subscriber numbers are changed all at once due to the circumference of the receiving station, Many callers are now required to use a changed telephone number when communicating with the called subscriber. Therefore, it is necessary to notify subscribers nationwide of the change of number, and if the change of number is not notified, there are problems such as incorrect dialing.

An object of the present invention is to provide a forwarding number conversion method that allows many callers to talk to called subscribers without being aware of the number change even if a large number of subscriber numbers are changed all at once. It is to serve.

[Means for solving problems]

The above object is achieved by transmitting numbers registered in advance for the next switching device when sending numbers to the next switching device.

[Effect]

The system converts the received digits into sending digits that are registered in advance for the next switching device and then sends them to the next switching device. If it becomes necessary to change the transmitted digits to be transferred to the next exchange, if the registered transmitted digits are changed to the specified number, the subscriber can transfer to the next exchange without changing the dialed telephone number. The registered sending numbers will be sent.

In other words, even if a large number of telephone numbers are changed due to the circumstances of the terminating station, many general subscribers other than the terminating station will be able to communicate with the called party whose subscriber number has been changed and whose telephone number will remain the same as before the number change. This allows you to make phone calls.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

First, to explain the outline of the present invention, FIG. 1 shows the concept of relay transfer of transfer numbers.

S in the figure. 4311321 F35 is a switching device), which accommodates subscribers 5UBO, SUB+, 5UB2, and 5UB3, respectively. Also, AI Bl “11
"2 B2C21AS""The three bows indicate the changed telephone numbers of the called subscriber SUB+, 5UB2, and 5UB3, respectively, and the numbers in parentheses A2B2C2, A, Bs c
, respectively represent the telephone numbers of the receiving subscribers 5UB2 and 5UB3 before the change.

Now, in this example, calling subscriber 5UBO has phone numbers A and B.
, C, , A2B2C2, A3B, If you dial C, switching device S. In , those phone numbers are A, B, C,, A2B2C2, AI5B'5 respectively.
After being converted to CS, the corresponding next exchange device S,, S2
．． This indicates that it will be sent to S3,
As a result, the originating subscriber 5tJBO is the terminating subscriber 5UB2,
Even if the user dials the pre-change telephone number of 5UB5 as it is, it is possible to make a call to the target subscriber 5UB2 or 5UB3.

The telephone number is exchanged at the exchange S0 and the next exchange S, ~S.

The exchange device S is shown in FIG. , the next exchange equipment number (N S N ; NeXtS+ri
tchNumber). Here, NSN is a unique number assigned to each switching device, and PI in the figure is an index for determining whether or not to index the next table.
I=l is defined as NSN determination. As shown in the figure, assuming that the dialed number is ABCDEΔΔΔΔ, the first table is indexed by the first digit of the dialed number, and the subsequent expansions are performed in the same manner until PI=1. is now determined.

FIG. 5 shows a memory table in which necessary information for converting into numbers to be sent is registered corresponding to the next exchange device. The ID in the figure is an index indicating whether or not numerical conversion is necessary, and ID=0 is defined as conversion not executed, and ID=i is defined as conversion executed.

This memory table is referred to when converting the received digits into the sent digits compatible with the next switching device, but specifically, the reference is made using the N5NK obtained as described above. This is done by indexing this table. To explain concretely using the example shown in FIG.
No conversion is performed, and for N5N=2, conversion is performed as ID-1, but in this case, the received digit A2B2C2 is converted to As B2C2 according to conversion information A'2 and then sent. It is. Similarly N5
For N=3, the received digits A, B, C, are AI,
The trap is such that it is converted into sJ and C'S and then sent out.

In this example, the next switching device number is used as the index key for determining the sending number, but it is also possible to use the outgoing route number as the index key.

〔Effect of the invention〕

As explained above, according to the present invention, when an arbitrary switching device sends a number to the next switching device, it is possible to arbitrarily convert it into a sending digit corresponding to the next switching device that is registered in advance and then send it. Either the calling subscriber is able to talk to the called subscriber whose telephone number has been changed due to the circumference of the receiving station using the old telephone number, or the calling subscriber is able to make a call using the old telephone number, or the calling subscriber is able to make a call from one communication network to a communication network with a different numbering system. This has the effect that connection can be easily realized.

[Brief explanation of the drawing]

Fig. 2) is a diagram showing the concept of relay transfer of transfer numbers to explain the details of the present invention, Fig. 2 is a diagram to explain the process of calculating the next exchange equipment number from the received digits, and Fig. , is a diagram showing a numeric conversion information storage memory table whose address is the next exchange device number. 80~S,...exchange device

Claims (1)

[Claims] 1. A transfer number conversion method in an automatic switching device that has a function of sending numbers to the next switching device, and when sending numbers to the next switching device, it sends out digits that have been registered in advance for the next switching device. A transfer number conversion method characterized by the following.