JPS6064593A - General-purpose trunk device - Google Patents

Abstract

PURPOSE:To attain a system having a flexibility coped with traffic variation by constituting a trunk used generally to various terminal devices. CONSTITUTION:When the communication system with an opposite station to be communicated with via a general-purpose trunk device C-TRK is decided, a communication control program is transmitted to the C-TRK via an initial program loading (IPL) link shown in dotted lines. The communication control program transmitted via the IPL link is transferred to an RAM via an advanced data link controller ADLC connected to a control link CTL under the control of a direct memory access control circuit DMAC. An ROM used in the C-TRK incorporates only a protocol of the ADLC.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) 9 Technical Field of the Invention The present invention relates to a trunk device for an electronic exchange, and more particularly to a σL trunk device that can be used for various terminal devices and various interoffice signaling systems.

(b) Problems with the Prior Art 1-Rank equipment has the functions of supplying communication current, monitoring input/output lines, and transmitting/receiving signals. equipment or
When the inter-office signaling systems differ, it is necessary to use different trunk devices accordingly. For example, in addition to conventional telephones, various terminal devices are being connected, and from now on, digital telephones and the like are also being connected. Furthermore, data transmission and reception between offices must be carried out between various exchange devices, from conventional exchanges to digital all-electronic exchanges.

This is because the equipment configuration of the digital electronic exchange is 1111
This results in a wide range of problems and is extremely inconvenient in terms of operation.

(C)1 Purpose of the Invention The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art;
To provide a general-purpose trunk device that configures a trunk that can be used universally for various terminal devices and that can be used as a flexible system compatible with the trunk device.

(d) 1 Structure of the Invention According to the present invention, the above-mentioned object is a trunk device for a digital electronic exchange that is accommodated in a network and receives information via the network from a plurality of terminals of a plurality of types and provides various services. A general-purpose information transfer means is provided between the main device of the digital electronic exchange and a control program is received by the general-purpose information transfer means from the main device according to the type of the terminal and the various service specifications. This is achieved by providing a general-purpose trunk device that operates according to a control program.

(e) 1 Examples of the invention FIG. 1 is a block diagram showing one embodiment of the present invention.

In the figure, EX is the digital electronic exchange, NW is the network of the digital electronic exchange Jul EX, CPR is the main control device of the digital electronic exchange EX, C-TRK is the general-purpose trunk device according to the present invention, and CTL is the control/exchange network.
The link and location are telephones.

FIG. 2 is a block diagram showing one embodiment of a general-purpose trunk device according to the present invention.

In the figure, CON'T is a control circuit using a microprocessor, ROM is a fixed-only memory, RAM is a random access memory, and DMΔC is a direct access memory.
The memory access control circuit, ADLC, is a general purpose advanced data link controller.

The present invention will be described in detail below with reference to the drawings. As mentioned above, FIG. 1 is a diagram showing an embodiment of the present invention, and shows an embodiment of the present invention which mainly involves communication between exchanges.

Conventional communication between exchanges has various methods in terms of transmission procedures, transmission speeds, etc., but since digital electronic exchanges are devices controlled by computers, communication between exchanges is based on data between computers. Since this is a communication, the communication control program is stored in the storage device of the main controller CPR of the digital electronic exchange EX shown in FIG.

When a communication method with a partner station to communicate via the general-purpose trunk device according to the present invention is determined, the communication control program is transferred to the initial program loading (IP) indicated by the dotted line in FIG. via a generic) link to a generic trunk device according to the invention.

For initial program loading (for IPL)
The communication control program sent via the link is sent to the direct memory access control circuit DM under the control of the advanced data link CTL connected to the control link CTL, as shown in FIG. It is transferred to the random access memory RAM via the controller ADLC.

The read-only memory ROM used in the general-purpose 1st to rank devices shown in FIG. 2 includes a general-purpose advanced data link controller Δl) L
Contains only C protocol.

When the communication control program is loaded into the random access memory RAM in this way, this general-purpose trunk device loads the communication control program 1a written in the random access memory RAM, REIT-ONLY MECHANIRI RO.
Predetermined inter-office communication is carried out according to the protocol of the general-purpose advanced data link controller ADLC stored in L).

The method described above is also used when changing the communication mode between stations (main controller C of digital electronic exchange EX in Figure 1).
The data is transferred from the PH storage device to the random access memory RAM via the CIPL link for initial program loading, and the program is modified.

Additionally, the subscriber line uses a scanning function to provide a general purpose advanced data link connected to the calling link.
By using the controller ADLC, it is possible to perform common processing on a plurality of subscriber telephones.

If more special services are required, multiple types of services can be combined by connecting simple functional trunk circuits via a network and exchanging information through an appearance different from that of the main controller CPR. Specifications can also be realized.

(``) 1 Effects of the Invention As explained in detail, according to the present invention, it is possible to implement the necessary firmware program according to the purpose of use, so that it is possible to implement multiple firmware programs according to the service specifications. ~ There is no need to design ranks (therefore, the configuration of the device is simple, and there is a great effect that it is possible to eliminate the need for economy).

[Brief explanation of drawings]

FIG. 3 is a block diagram showing an embodiment of the present invention. Is Figure 2 based on the present invention? FIG. 2 is a block diagram showing an example of a rank device for JL. In the figure, IEX is a digital electronic exchange, NW is a network of digital electronic exchange EX, CPR is a main controller of digital electronic exchange taEX, C-TRK is a general-purpose trunk device according to the present invention, and CTI is a - Roll link, TEL IJ:N filling machine, C0NT is a control circuit using a microprocessor, ROM is a read-only memory, and RAM is a random access memory.
Memory, I) MAC is a direct memory access control circuit, ADL C is an advanced data link controller for σ.

Claims (1)

[Claims] In the trunk device of a digital electronic exchange that is housed in a network and receives information via the network from multiple terminals of multiple types and provides various services, general-purpose information is transmitted between the trunk device and the main device of the digital electronic exchange. A general-purpose trunk device comprising a transfer means, wherein the general-purpose information transfer means receives a control program from the main device according to the type of the terminal and the various service specifications, and operates according to the control program.