JPH0637911A - Signal processing system - Google Patents

Abstract

PURPOSE:To attain a communication with the other side station without considering each kind of trunk signal system by the calling control module of a node system. CONSTITUTION:The node system is constituted of a calling control module 1, trunk signal interface module 2, and other module 3. Each module is equipped with the processing function of an M signal unified in the node system. And also, the trunk signal interface module 2 is equipped with a converting function which converts the M signal into each kind of trunk signal (A signal-Z signal). Then, the transfer and reception of information among the modules is operated by using the M signal, and the communication with the other side station is operated by using the trunk signals of the other side station by converting the M signal into the trunk signals of the other side station by the trunk signal interface module 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trunk line signal processing system in a node system in an information exchange network having a plurality of different trunk line signaling systems.

[0002]

2. Description of the Related Art Conventionally, as a technique in this field, there is one described in, for example, "Research and Practical Report of The Institute of Electrical Communication, Vol. 31, No. 11 (1982), pp. 19-29". FIG. 4 is a system configuration diagram showing an arrangement of a trunk signal device in a time division switch, which is one of node systems in an information network, and is described in the above publication.

In FIG. 4, TSE is a relay signal device that processes various individual line signals, and CSE is a common line signal device that processes common line signals. The central processing unit is a unit that controls the entire time-division exchange, and performs call control processing and higher-level processing of various signal processing. As for the trunk signal system, various signal systems have been considered as the technology develops. The common line signaling system is one of them, and the conventional signal processing device is provided for each trunk line. The signal path and the signal processing device are common to many relay lines by using a signal system of high reliability and quality rather than the 7 common line signal system.

[0004]

However, in the above-mentioned conventional signal processing system, the relay signal device (TS
E), the two signal processing devices of the common line signaling device (CSE) are directly connected to the central processing unit device corresponding to the upper device through the SP bus and the data channel device (DCH), respectively, and the dense interface is provided. I am taking it.

Therefore, from the viewpoint of the call control unit, various signal processing methods are directly supported, and existing signal processing methods also have to be supported until the methods no longer exist in the network. However, there is a problem in that when developing, it is necessary to always consider all existing signal processing methods when designing.

An object of the present invention is to provide a signal processing system which solves the above-mentioned conventional problems, facilitates the design of a node system, and facilitates the renewal of equipment according to the transition of the times. .

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a signal processing method in a node system in an information exchange network in which a plurality of different trunk signal systems exist, and the signal processing method is unified in the node system. And a trunk line signal interface module that is provided independently of the call control module and that has a conversion function between the trunk line signaling system and the inter-module signaling system. It is configured as follows.

[0008]

According to the present invention, since the signal processing system is configured as described above, the transmission and reception of the information between the respective modules in the node system is performed by using the unified inter-module signal system, and the communication with the partner node system is performed. Communication is performed by the trunk line signal interface module by converting between the unified inter-module signal system and the trunk line signal system of the partner node system, and using the trunk line signal system of the partner node system.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a conceptual diagram showing a signal processing system according to an embodiment of the present invention. As shown in FIG. 1, the node system is composed of a plurality of modules such as a call control module 1, a trunk line signal interface module 2, and other modules 3 such as a packet processing module and a maintenance operation module. . Then, each module is provided with an M signal processing function (hatched portion M) for interfacing between the modules by a unified signal system called inter-module signal (hereinafter, abbreviated as M signal).

Next, let us consider the processing of relay line signals. The processing of the trunk line signal can be divided into a signal protocol processing as a communication means for communicating with the opposite node system which is opposed via the trunk line, and a call control processing corresponding to the higher level. In FIG. 1, the trunk line signal interface module 2 executes the former, and the call control module 1 executes the latter. During that time, the M signal is used for the interface. Therefore, it is necessary to have a function of converting various relay line signals (A signal to Z signal) accommodated in the relay line signal interface module 2 into M signals.

From the viewpoint of the call control module 1, it is not necessary to directly interface various relay line signals (A signal to Z signal), which are communication means with the opposite system, and information is relayed by using the M signal. When it is transmitted / received to / from the node 2, the relay line signal interface module 2 can convert the corresponding relay line signal and communicate with the opposite node system.

FIG. 2 is a conceptual diagram showing a signal processing system according to another embodiment of the present invention, in which the call control modules are load-balanced to m (m is an integer of 2 or more) and the trunk line signal module is a common line signal. The functions are distributed to the module 2a and the individual line signal module 2b, and each of them has an inter-module coupling mechanism 4
It shows a case connected via. The inter-module coupling mechanism 4 is a coupling device that connects the modules when the system is started, and is transparent when viewed from the M signal.

FIG. 3 is an explanatory diagram showing the correspondence between the functional blocks of the common line signal module and the respective functions of the protocol hierarchy of the M signal and the common line signal in another embodiment of the present invention. In FIG. 3, the M signal is realized by a combination of various CCITT international protocols, and lower layers below layer 2 are ATM protocols (Recommendations I. 361 to 363).
Is realized on the basis of the data transfer phase of the X25 protocol and ISCP on the upper layer 3 or higher. The common line signal is NO. 7
The case of a common line signal is shown. NO. 1 which is one of the relay line signals. 7 Signal conversion between common line signal and M signal is CP
It is done by software on the system. Note that the content of the protocol itself is not the subject of the present invention, and therefore its explanation is omitted.

The operation of FIG. 2 will be described below with reference to FIG. In FIG. 2, the call control modules ₁₁ to
1 _m and the common line signal module 2a are communicated by M signals. When the call control module needs to communicate with another station as a result of the call control processing, it checks which trunk line signal interface module accommodates the other station, and communicates with the interface module based on the result. At this time, the call control module may communicate with the interface module using the M signal unified in the node system without being aware of the signal system of the trunk line signal with the partner station. The information to be communicated is communicated with the partner station by using the signaling system between the partner stations.

For example, when the interface module is the common line signal module shown in FIG. 3, the "information to communicate with the partner station" transmitted from the call control module is sent to the CP system via the inter-module communication function (MET). It is input to the "signal conversion processing" section (implemented by software).
In the signal conversion processing unit, the NO. No. 7 common line signal is converted. 7 Signal control device (CS7C) is activated to communicate with the partner station.

The case where it is necessary to communicate with the partner station as a result of the call control processing has been described above, but on the contrary, the call control processing may be activated by communication information from the partner station. Also in this case, the trunk line signal interface module, for example, the common line signal module 2a in FIG. 3, receives the communication information from the partner station, converts it into the M signal in the signal conversion processing unit, and transfers the M signal to the corresponding call control module. To do. As a result, the call control processing of the call control module is activated.

[0017]

As described in detail above, according to the present invention, in a signal processing method in a node system in an information exchange network in which a plurality of different trunk signal systems exist, a module integrated in the node system is used. A call control module having an inter-signaling system processing function, and a trunk line signal interface module provided independently of the call control module and having a conversion function between the trunk line signaling system and the inter-module signaling system Therefore, the call control module can communicate with the partner station using only the inter-module signal unified in the node system without being aware of various trunk line signaling systems.

Therefore, the processing of various trunk line signals is closed only in the trunk line signal interface module which is independent of other functions in the node system, so that the node system can be easily designed and the existing relay system can be used. It will be easy to upgrade line signals to facilities that are in line with the changes of the times.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a signal processing system according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing a signal processing system according to another embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a correspondence relationship between a functional block of a common line signal module and each function of a protocol hierarchy of an M signal and a common line signal in another embodiment of the present invention.

FIG. 4 is a system configuration diagram showing a conventional node system.

[Explanation of symbols]

 1 Call Control Module 2 Relay Line Signal Interface Module 2a Common Line Signal Module 2b Individual Line Signal Module 3 Other Module 4 Inter-Module Coupling Mechanism

Claims (1)

[Claims] 1. A signal processing method in a node system in an information exchange network having a plurality of different trunk line signaling methods, comprising: (a) call control having a processing function of an inter-module signaling method unified in the node system. A signal processing, comprising: a module; and (b) a trunk line signal interface module that is provided independently of the call control module and has a conversion function between the trunk line signaling system and the inter-module signaling system. method.