JPS63152259A - Exchange system - Google Patents

Abstract

PURPOSE:To contrive the decreasing of the capacity of a TS control section and processing speed by allowing a subscriber line exchange LS to collect calls to the same path into one and the same group and allowing a relay exchange TS to process the relay exchange to the corresponding path at every group. CONSTITUTION:A relay line 6 between the LS 1 and the TS 2 is grouped into plural groups and the LS 1 detects the path before the TS 2 of the all from a subscriber line 5 to collect the calls to the same path to the relay line of the same group and the TS 2 discriminates the destination at every group to apply the processing of relay exchange to the corresponding path. Thus, it is not required to discriminate the destination of the relay line 6 between the LS 1 and the TS 2 and the load of the control section 4 of the TS 2 is reduced remarkably, then the control section 4 with small capacity and comparatively small processing speed can be used.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a switching system in a communication network. [Prior Art] Fig. 2 is a block diagram showing a conventional switching system. ) is a subscriber line switch (hereinafter referred to as LS), (2) is a trunk exchange (hereinafter referred to as 'rS), and (3) is a trunk exchange (hereinafter referred to as 'rS).
) is the exchange part of the LS (1) and T S (2), (4
) is the control unit for the t, 5(1) and 'I' 5(2), (5) is the subscriber line accommodated in the LS(1), and (6) is the control unit for the t, 5( 1) and TS (2), and (7) is a relay line from the TS (2) to each route Δ, B, and C. Here, the trunk line (6) is L S
For the relay line between (+) and 1゛5(2)! =l is provided.

Next, the operation will be explained. LS (+) is the subscriber line (5
) and between the subscriber line (5) and the trunk line (6), and the signaling device in the control unit (4) handles calls from each subscriber line (5). When the destinations of are detected and the control unit (4) determines that they are destined for TS (2), it controls the switching unit (3) to connect to the trunk line (6) between it and the TS (2). . At this time, the control unit (4) of LS (1) is not concerned with the route beyond TS (2).

When exchanging relays between trunk lines (6) and (7), TS (2) first detects the destination of each trunk line (6) using the signaling device in control unit (4), and then detects the destination of each trunk line (6).
4) controls the switching unit (3) based on the detected destinations, and performs relay switching processing for each corresponding route to the trunk line (7).

Here, if the number of trunk lines between LS (1) and TS (2) is n, then there are n trunk lines (6
), and there are cases where the trunk lines are multiplexed and connected using a smaller number of trunk lines (6), but in both cases, each individual trunk line is The destination of each trunk line is determined, and each trunk line fj
They are the same in that relay exchange is performed on i.

[Problems to be solved by the invention] Since the conventional exchange system has been developed as described above,
i' S (2) determines the destination for each trunk line,
and individual relay exchange processing for each relay line, resulting in a large load on the control unit (4).
However, there was a problem in that 8 units were large and required a high processing speed.

The present invention has been made to solve the above-mentioned problems, and aims to provide a switching system that requires a small capacity and processing speed of a TS control unit.

[Means for Solving the Problems] The switching system according to the present invention divides the trunk lines between the LS and the TS into groups, and the LS detects the route beyond the TS of each call and connects the same terminal. Collect calls to the same group into T
S' is designed to interpret the destinations for each group and perform relay communication processing to the corresponding route.

[Function] In the switching system of the present invention, calls to the same route are collected in advance on the same group of trunk lines at the LS, so that the S only needs to interpret the destination for each group of trunk lines. It becomes possible to perform relay exchange processing to a predetermined route.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. 1st
As shown in the figure, (1) is LS, (2) is 'r S, (3)
is the switching section, (4) is the control section, (5) is the subscriber line, (7)
is a relay line from TS (2) to each route, and is the same part as the one with the same reference numeral in FIG. In addition, (6) corresponds to LS(+) and T corresponding to the parts with the same symbols in FIG.
There are n trunk lines between S'(2) and trunk lines grouped into m groups on a line-by-line basis, each of which is multiplexed.

Next, the operation will be explained. In LS (1), the destination of the call from each subscriber line (5) is first read from 'rS (2) onwards by the transmission device in the control unit (4), and '
From r s (2), it is detected whether the route ahead is Δ, n, c, . . . . Next, based on this detected destination, the control unit (4) selects the same group, that is, the same relay 1.
The switching unit (3) is controlled in iI (6) so that the relay lines to the same route are gathered.

In 'I'S (2), first, the signaling device in the control unit (4) detects the destination for each group multiplexed on the trunk line (6), and the control unit (4) detects the destination of each group multiplexed on the trunk line (6). A process for controlling the switching section (3) based on the destination, and collectively switching the trunk lines of the group multiplexed on the trunk line (6) to the trunk line (7) of the corresponding route. Execute.

According to this embodiment, the TS (2) only needs to read the destinations of a small number of groups, and there is no need to read the destinations of a large number of trunk lines individually. Not only does the processing speed need to be small, but the capacity of the switching section (3) can also be small because it is sufficient to perform the switching in units of multiplexed groups rather than on each side of the trunk lines.

In addition, in the above embodiment, trunk lines grouped by line are multiplexed as trunk lines between LS and TS, but trunk lines can be connected directly to trunk lines without multiplexing. The trunk lines may be made to correspond to each other, and the trunk lines may be grouped into groups for each book, for example. In that case, 1
Although it is not possible to simplify the switching section of the S, it is no longer necessary to individually read the destinations of a large number of trunk lines, resulting in the effect that the capacity and processing speed of the control section can be reduced.

[Effects of the Invention] As described above, according to the present invention, the trunk lines are divided into groups for each same route at the LS, and the TS performs relay exchange processing by reading the destination for each group of trunk lines. With this configuration, there is no need to read the destination for each relay line between the LS and the TS, and the load on the TS control unit is significantly reduced. The structure is not complicated, the processing speed is relatively low, and the exchange method is highly reliable and advantageous in terms of cost.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a switching system according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional switching system. (1) is Ls, (2) is TS, (3) +; i exchange part, (
4) is a control unit, (5) is a subscriber line, and (6) and (7) are trunk lines. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. (2 other people) Figure 1 1: Ls 5: Calo 1 Surface line 2: TS
(3: China Jichen Line Diagram 2 Procedure Amendment (Voluntary)

Claims (3)

[Claims] (1) In a communication network in which calls from a subscriber line are relayed from a subscriber line exchange via a relay exchange,
Trunk lines between the subscriber line exchange and the trunk exchange are divided into a plurality of groups, and the subscriber line exchange detects a route beyond the trunk exchange of a call from the subscriber line. , a switching system characterized in that calls to the same route are collected on relay lines of the same group, and the relay exchange reads the destination for each group and processes the relay exchange to the corresponding route. (2) The trunk lines are multiplexed for each group so that each of the trunk lines corresponds to each trunk line connecting the subscriber line exchange and the trunk exchange, and the trunk exchange processing by the trunk exchange is performed for each group. 2. The exchange method according to claim 1, wherein the exchange method is performed at once. (3) Each of the trunk lines is made to correspond directly to each of the trunk lines connecting the subscriber line exchange and the trunk exchange, and the trunk exchange processing by the trunk exchange is performed individually for each trunk line. The exchange system according to claim 1, which is