JPS6151479B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for mounting a path selection relay in a trunk package for an electronic exchange.

FIG. 1 shows a method of mounting a conventional path selection relay.

In FIG. 1, A, B, . . . , H indicate path selection relays, and TO, 1, 2 are connectors for connecting to the drive circuit and for connecting path selection information to each trunk package.

Conventionally, F-system relays with a large number of contacts have been used as path selection relays. In addition, the trunk circuit used a small D-type relay with a small number of contacts. Therefore, due to the problem of the mounting area within the trunk package and the unification of the mounting plate, the path selection relay was mounted on a dedicated mounting plate separately from the trunk circuit, resulting in a centralized mounting method.

FIG. 2 is a circuit diagram of an outgoing trunk conventionally used in an electronic exchange, and shows correspondence with a package PSRP in which path selection relays are centrally mounted.

As shown in Fig. 2, relays A, E, and L are used for call monitoring, and magnetically held relays S and T are used for pattern control, and the drive circuit controls the relays S and T for pattern control. Regarding the information, path selection was performed using a package PSRP in which the path selection relay was centrally mounted separately from the trunk circuit.

FIG. 3 shows the connection state between the package PSRP, in which path selection relays are centrally mounted, and each trunk package TRKP. Figure 3 shows 1PSR package (PSRP) and 16 trunk package (TRKP).
0 to TRKP15), and is used to explain how the relay contacts for path selection to each trunk package are used.

Therefore, in Figure 3, the package PSRP that centrally implements path selection relays requires the use of long-life relays because pattern control information is distributed from the drive circuit to various trunk packages TRKP. Ta.

In addition, if a path selection relay breaks down due to a fault, etc., it is necessary to repair or replace the package PSRP in which the failed path selection relay is installed, so during repair or replacement, information is extracted from the corresponding package. All trunk packages connected to the system became uncontrollable, resulting in 64 lines going down, and the problem was that the failure spread over a wide area.

In addition, the package PSRP in which the path selection relay is mounted has the first
As shown in the figure, three connectors were used and stacked in three tiers, which resulted in poor manufacturability.

The present invention aims to solve the above drawbacks,
By distributing and mounting path selection relays in each trunk circuit, it improves manufacturability and makes it possible to use path selection relays with a short lifespan, making it possible to prevent failures due to path selection relay failures, etc. To provide a distributed mounting method for path selection relays that can narrow the scope of failure to only the relevant trunk package without affecting the control of other trunk circuits during repair or replacement of the trunk package. This will be explained in detail below.

FIG. 4 is an embodiment of a trunk package to which the present invention is directed, and shows a circuit diagram of an outgoing trunk used in a conventional electronic exchange.

FIG. 4 is a diagram showing a circuit in one trunk package according to the present invention, and is a diagram for explaining the relationship between the pattern control relay circuit and the bus selection relay circuit. The circuit for one trunk package (TRKP0 to TRKP15) in FIG. 3 and the circuit for one relay of the package correspond to that in FIG. 4, and the control information also corresponds. In FIG. 4, relays A, E, and L are used for call monitoring, magnetically held relays S and T are used for pattern control, and a path selection relay is used for path selection of the pattern control relays S and T. PSRs are installed separately and distributed within each trunk package, and are connected to obtain path selection information and pattern control information directly from the drive circuit to control the trunk circuit.

As described above, in the present invention, since the path selection relays are distributed and mounted in each trunk package, it is possible to use a short-life relay as the path selection relay. In addition, if a path selection relay breaks down due to a fault, etc., the only trunk circuit that becomes uncontrollable during repair or replacement is the trunk package in which the failed path selection relay is installed (in this example). (In this case, 4 lines would be down.) Furthermore, since it does not affect other trunk packages, it has the advantage of narrowing the range of failure effects.

Furthermore, since the path selection relays are mounted in a distributed manner within each trunk package, there is no restriction on connector terminals, and the relays can be accommodated in one connector, thus improving manufacturability.

In addition, a short-life relay can be used for the path selection relay, and since it can be mounted in the same package with a small D-type relay with a small number of contacts, a relay with a small number of contacts for path selection is used, and a dedicated installation is required. There is no need for a board, and the connector can be accommodated with the surplus terminals of the connector used in the trunk package, which has the advantage of being economically efficient overall.

[Brief explanation of the drawing]

Figure 1 is an implementation diagram of a package in which conventional path selection relays are centrally mounted, Figure 2 is a circuit diagram of a conventional outgoing trunk, and Figure 3 is a package diagram in which conventional path selection relays are centrally mounted and each FIG. 4 is a circuit diagram of an outgoing trunk showing one embodiment of the trunk package to which the present invention is applied. A, E, L... Relay for call monitoring, S, T...
Pattern control relay, PSR...Path selection relay.

Claims (1)

[Claims] 1. In a trunk package that accommodates four trunk circuits, the path selection relay for the pattern control relay of each trunk circuit is installed separately and within the trunk package to directly obtain path selection information and pattern control information. A distributed implementation method for path selection relays.