JPH02137496A - Routing processing system - Google Patents

Abstract

PURPOSE:To average an activity ratio at every subroute and to effectively use a speech line only by selecting the subroute by constituting a system to select the subroute by using the activity ratio of the speech line in a correspond ing subroute in the case of deciding the subroute by using a subroute decision table. CONSTITUTION:In a process to perform the call processing of telephone exchange, destination(DSTN) to which an incoming destination subscriber belongs is decided by a receiving incoming telephone number, and a correspond ing route number (RTNi) is decided by the routing processing table (RTGTBL) of a corresponding destination. Furthermore, a subroute number is selected by using the subroute decision table (SRTTBL) by the RTNi, however, at this time, the activity ratios alpha, beta, and gamma of the speech lines in SRTN0, SRTN1, and SRTN2 set in the subroute decision table (SRTTBL) are found from a speech line activity ratio table (RATESRT), and the subroute with the lowest line activity ratio is selected.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method for selecting a subroute to which an outgoing call line belongs from a called destination telephone signal received during call processing of a telephone exchange in a storage program controlled telephone switching system. Regarding the routing processing method.

[Conventional technology]

As an example of a routing processing method of a conventional storage program controlled telephone exchange system, a memory configuration diagram for routing processing is shown in FIG. 2 and will be described. In the same figure, DS
TN is the destination number, RTNOlRTNl, RTN2 is the route number, RTGTBL is the routing processing table,
5RTNO5SRTNI and 5RTN2 are subroute numbers, and 5RTTBL is a service route determination table.

In the conventional routing processing method, the destination (DSTN) to which the destination subscriber belongs is determined from the received destination telephone number, and the routing processing table (RTGTBL) of the destination is determined.
) to determine RTN i. Furthermore, the corresponding route number (
RTN i ) is used to determine the subroute determination table (SRT
TBL) is used to select a subroute number, and at this time, 5RTNi is selected according to the order set in the subroute determination table (SRTTBL).

[Problem to be solved by the invention]

In the routing processing method in the conventional storage program controlled telephone switching system described above, when selecting subroutes, they are selected in order of priority according to the order set in advance in 5RTTBL.

Therefore, it is possible to select from 5RTNO and select 5RTNI when 5RTNO is completely occupied. Similarly, 5RTN2 is selected when both 5RTNO1SRTNI are completely occupied.

In a typical storage program controlled telephone switching system, a subroute is a line group in which the lines within a rate are divided into a plurality of groups based on the signaling system between exchanges, the attributes of the call line, the switchboard, etc. For this reason, with conventional routing processing methods, calls are biased toward specific subroutes with high priority, and even if one of the exchanges in a telephone exchange where two exchanges are installed is in a state of congestion, the same The other exchange at the station is likely to be under a light load, which poses problems from the standpoint of reliability, economy, and service to subscribers.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to average the call line usage rate within a subroute.

[Means to solve the problem]

The routing processing method of the present invention determines the destination to which the destination subscriber belongs based on the received destination telephone number in the process of call processing in the telephone exchange, and then determines the outgoing route using the routing processing table of the destination, Furthermore, in a storage program control telephone switching system that selects an outgoing subroute from among the subroutes set in the subroute determination table for the corresponding route, when determining a subroute using the subroute determination table, the call line within the corresponding subroute is This configuration uses usage rates to select subroutes.

〔Example〕

Next, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a diagram showing an embodiment of a routing processing method of a storage program controlled telephone switching system according to the present invention, and is a memory configuration diagram for routing processing. In Figure 1, DSTN is the destination number, RTNOlRTNI, RTN
2 is the route number, RTGTBL is the routing processing table, 5RTNO1SRTNI, 5RTN2 are the subroute numbers, SRTTBL is the subroute determination table, RATESRT is the line usage rate table, α, β, and γ are the numbers in the subroutes of 5RTNO, 5RTNI, and 5RTN2, respectively. Shows the call line usage rate.

Next, the operation of this embodiment will be explained. In the process of call processing in the telephone exchange, the destination (DSTN) to which the destination subscriber belongs is determined based on the received terminating telephone number, and RTNi is determined based on the routing processing table (RTGTBL) of the destination. Furthermore, a subroute number is selected using the subroute determination table (SRTTBL) according to the corresponding route number (RTN i ), but at this time, 5RTNO, 5 set in the subroute determination table (SRTTBL) is selected.
RTNI, 5 Call line usage rate α, β, γ within RTN2
is obtained from the speech line usage rate table (RATESRT), and the subroute with the lowest speech line usage rate is selected.

〔Effect of the invention〕

As explained above, according to the present invention, the call line usage rate for each subroute is counted and the subroute set in the subroute determination table is calculated without significantly changing the routing processing program of the conventional storage program control telephone switching system. By comparing the call line usage rates of the subroutes, it is possible to average the usage rates for each subroute by simply selecting a subroute, making effective use of the call lines, and further eliminating restrictions on the order in which subroutes are set in the subroute determination table. This has an extremely large practical effect, since the telephone exchange system can be realized economically in terms of maintenance and operation.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a diagram of a memory configuration for routing processing showing an embodiment of a routing processing method of a storage program controlled telephone switching system according to the present invention, and FIG. 2 is a diagram of a conventional storage program controlled telephone switching system. FIG. 2 is a memory configuration diagram for routing processing showing an example of a routing processing method. DSTN: Number indicating the destination to which the destination subscriber belongs;
RTNO, RTNI, RTN2...Route number, RT
GTBL...Routing processing table, 5RTNO
, 5RTNI, 5RTN2...Sub route number, S
RTT B L...Sub route determination table, RAT
ESRT: Speech line usage rate table for each subroute; α, β, γ: Speech line usage rate for each subroute.

Claims (1)

[Claims] In the process of call processing in the telephone exchange, the destination to which the destination subscriber belongs is determined based on the received destination telephone number, and then the outgoing route is determined using the routing processing table of the destination, and then the subroute determination table of the corresponding route is determined. In a stored program control telephone switching system that selects an outgoing subroute from among subroutes set in A routing processing method characterized by selection.