KR0168776B1 - Isdn common channel signaling processor dualization in exchanger - Google Patents

Abstract

In the duplexing method of the common channel signal processor of the integrated information communication network of the electronic switch, X-loading is performed to check whether or not signal link failure initial link is activated from the X-loading value.

The signal link failure is processed at the time of failure and the activation is not activated, the flag is activated when the activation is in progress, the process of the activation process and the status of the signal link is checked by checking the status of the signal link when the activation is not in progress.

Description

Redundancy Method of Common Channel Signaling Processor in Integrated Communication Network in Electronic Switch

1 is a system diagram to which the present invention is applied.

2 is a redundancy sequence diagram of the CCSP.

3 is a flow chart according to the present invention.

4 is a flow chart of management from the powerhouse in accordance with the present invention.

The present invention relates to a duplication method of a common channel signal processor (hereinafter referred to as CCSP) of an integrated information communication network in an electronic exchange.

When operating the conventional CCSP in the redundant mode, the signal link data and operation protocol of the active CCSP and the standby CCSP are X-loaded from the active CCSP so that the standby CCSP can be synchronized with the active CCSP. Receive. The signal link state and related data are applied to the standby CCSP as it is.

However, in the related art, X-loading of the management data of the active side CCSP is used to prevent the conversion data during X-loading. Accordingly, there is a problem that the operation protocol is not smoothly matched when the signal link state changes during X-loading.

Accordingly, it is an object of the present invention to provide a method of increasing reliability by fully matching operation protocols during smooth duplication processing of CCSP for processing No. 7 relay lines in a general information communication network.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a system applied to the present invention. FIG. 1 is a TDX-1B ISDN switch applied in an embodiment of the present invention, and a CCSP (Common Channel Signaling Processor) corresponding to Layer 3 in a CSM module in charge of signal relay between stations. In order to smoothly perform the redundancy of the SL (Signalling Link) state data and the operation protocol (Protocol) to match.

To explain the present invention, the configuration of the CSM module, the CCSP redundancy, the operation of the CCSP, and the surrounding environment will be described with reference to FIGS. 2 to 4, and finally, the present invention provides a scheme for matching the SL state data and the operation protocol. Explain.

The maintenance service processor (MSP) of FIG. 1 is a maintenance and management processor of the CCSPs 101 and 102 as a master T processor of the CCSP.

DTLP is a processor in which ISUP, the No.7 user part, is implemented and corresponds to layer 4 of the No.7 system that processes relay calls and other calls. The call processing signal generated here is transferred to the CCSPs 101 and 102 and transmitted to the signal link connected to the corresponding power station.

The CCSPs 101 and 102 correspond to layer 3 of the No. 7 system and aim to reliably deliver messages generated in the user unit to the corresponding powers.

STGP has 16 chapters of Signaling Terminal B'd (STB), which is one HW for one signal link, and corresponds to Layer 2 of No.7 system. Nailed up path 201 means a path inside the fixed exchange to the STGP and T1 (E1) trunk.

The operation and duplication of the CCSPs 101 and 102 corresponds to layer 3 of the No. 7 system, and the basic functions are as follows.

The message processing function reliably delivers the messages generated from UP (User Part) to the corresponding power station, delivers the messages received from the power station to UP, and the optimal signal network to perform the message processing function smoothly with the signal network management function. The signal link held by the CCSPs 101 and 102 is optimally maintained and managed by the signal link management function. In addition, by operating the CCSP (101, 102) in a duplication mode with a redundancy management function to recover as soon as possible in the event of a failure.

Since the signal link data and the operation protocol correspondence are the CCSP (101, 102) is operated in the duplex mode, the standby CCSP (101, 102) must be X-loaded the relevant data from the active side CCSP (101, 102). However, because X-loading time takes about 6 minutes, the signal link management data may change during X-loading. In FIG. 2, if the X-loading time is from t = 0 to t = e, assuming that the signal link management related data has passed to the standby side at the time t = a, the signal link management data is generated at the active side at the time t = b. If it has changed, the standby side may have incorrect data. Thus, the operating protocol also does not match. In order to overcome this problem, the following method is solved.

In the X-loaded signal link related management data, only the status of SL is used.In relation to the timer, the management data is cleared, the management data is initialized, and only the status is referred to the active side, but if the status is active or active, the standby is activated. Set the relevant flag (management data) to be active or immediately active. The standby CCSPs 101 and 102 can also receive messages via STGP, so that they perform the same routines as the active side depending on the received message, but are active immediately upon receipt of signal link test recognition signals from the station with a failed or disabled state. To switch to.

For example, referring to FIGS. 3 and 4, the X-loading process checks whether the signal link is broken (3b), and checks whether it is not activated from the initial state (3d). In step 3f, the signal link is checked for activation. In step (3b), the signal link is processed at the time of failure (3c). When the signal link is not activated from the initial state in step (3d), the signal link is activated in the step (3e).

When the signal link is activated in step (3f), the activation flag is set in step (3g) and the signal link is activated in step (3h).

When the signal link activation is not in progress in step (3f) and the signal link activation state is performed in step (3i), the signal link activation process is performed in step (3j). If there is a signal link test recognition message signal from the power station in the process of initializing the signal link state and when the signal link is not activated or when the signal link fails, i.e., when (4b, 4g) becomes (4b, 4g) (4c). In step 4), the link is managed by the link, the flag is set in step 4d, and the timer is set in step 4e.

As described above, when the CCSP is operated by redundancy, the operation protocol is completely matched, thereby improving the reliability of the system.

Claims (2)

In the duplexing method of the common channel signal processor of the integrated information communication network of the electronic switch, the first step of X-loading and the activation and progression of the initial link of the link failure from the X-loading value in the first step are performed. A second step of checking, a third step of processing a temporary failure of a signal link in the second step, activating when it is not activated, and processing a setting activation process when the activation is in progress, and activating in the third step And a fourth process of processing the activation of the signal link by checking the state of the signal link when the signal link is not present. The method of claim 1, further comprising: managing a link set by receiving a signal link test transplant signal message from a power station when a signal link failure and activation of a check process are not performed, and setting a flag according to the link set management after the link set management of the process; And setting a timer for transmitting a signal link message to the common channel signaling processor of the integrated information communication network.