JP3139461B2 - Synchronous confounding method for outgoing signal in signal processing device of exchange - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal processing device of an exchange having a duplex configuration, wherein data transmitted from the duplexed signal processing device has a tone or the like even when the operation system is switched. The present invention relates to a transmission signal synchronous confounding method capable of performing normal switching without interruption.

[0002]

2. Description of the Related Art When designing a signal processing device of an exchange, it is common to adopt a duplex configuration so that services can continue normally even if a failure occurs during operation. It is necessary that data transmitted from a signal processing device of an existing exchange be switched normally without interruption of tone or the like even when the operation system is switched. A signal such as a tone used in the signal processing device is 8 kHz used in the exchange.
A signal whose cycle is longer than that of a cycle frame signal is used.

In order to normally switch the operation to the other standby system when the active system is stopped, a signal for synchronizing the states of the active system and the standby system is a confounding signal, and among them, the data to be transmitted is synchronized. Is a transmission synchronization confounding signal.

FIG. 5 is a diagram showing a method for realizing a conventional transmission signal synchronous confounding function, and realizes a synchronous confounding function in a case where there is a function block A or B.

According to FIG. 5, in order to synchronize the signals sent from the operation and standby systems when transmitting a signal from the function block B to the function block A, the operating system and the standby system of the function block B must be connected to each other. Had to connect and provide confounding signals (FIG. 5).

In this connection method, if several or a plurality of functional blocks B are connected, a synchronous confounding signal is required for each of the functional blocks B in order to synchronize (FIG. 6).

[0007]

As described above, in the conventional method for realizing the synchronous intermingling function of the transmission signal, if several or more types of functional blocks B are connected, the number of synchronous intermingling signals is required by the number of mounted modules. In addition, there is a problem that the number of cables must be increased.In addition, the number of points for monitoring the normality of the synchronous confounding signal and the number of notification methods at the time of failure increase, making the system extremely uneconomical. There was also a problem that it was not possible to achieve slimness.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a signal processing device for an exchange which does not connect to all functional blocks which require a synchronous confounding signal as in the prior art, but forms the minimum necessary connection structure and efficiently performs synchronous confounding. It is an object of the present invention to provide a method for synchronizing a transmission signal to realize a function.

[0009]

According to the present invention, there is provided a method for synchronizing a transmission signal in a signal processing apparatus of a switch having a duplex configuration comprising an active system and a standby system having an upper functional block and a plurality of lower functional blocks. In order to synchronize the data sent from each of the plurality of lower functional blocks in the active system and the standby system, the upper functional block
If the cycle of synchronizing each of the lower functional blocks is different, the transmission synchronizing signal of the lower functional block is superimposed on the confounding signal between the upper functional blocks based on the least common cycle time of each lower functional block, The lower functional block operates a counter based on the frame signal extracted in the lower functional block to regenerate a frame signal for the lower functional block.

According to the present invention, it is possible to efficiently perform a method for synchronizing a transmission signal in an operation system and a standby system in such a signal processing device.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory diagram of a transmission signal synchronous confounding method according to an embodiment of the present invention. Functional block B is
This is a part that needs to be synchronized when transmitting data, and is a functional block whose efficiency is improved when the configuration according to the present invention is adopted. The function block A is a block positioned higher than the function block B, and the function block B
The portion where the synchronous confounding function is superimposed is the confounding portion (of FIG. 1) between the functional blocks A.

Next, the operation of this embodiment will be described with reference to the drawings. FIG. 2 is a diagram showing a frame signal between the functional blocks A and B in a normal state, and FIG. 3 shows a frame signal between the functional blocks A and B when the synchronous confounding signal of the functional block B is superimposed. FIG.

As shown in FIG. 2, a clock and a frame are input to the signal between the functional blocks A and B. If only the data transmission / reception between the functional blocks A and B is considered, the frame pulse only needs to be transmitted for one clock in synchronization with the clock. At present, such a format is employed.

In this embodiment, a signal for synchronizing data transmitted from the function block B is superimposed. As shown in FIG. 3, the frame pulse between the functional blocks A and B is output not for the normal one clock width but for the two clock widths, as shown in FIG. Send to function block B. In the functional block B, the superimposed frame information is extracted from the functional block A, and the data transmitted from the functional block B in the operation and standby system can be synchronized by using this synchronization signal.

For example, if a frame between the function blocks A and B normally transmits and receives 8 kHz and the frame period for a synchronization signal required by the function block B is 2 kHz, the frame between the function blocks A and B Can be realized in a multi-frame in which data is transmitted at a rate of one clock width to two clock widths once every four times.

FIG. 4A is a diagram showing an 8 kHz frame transmitted from the function block A, and FIG.
FIG. 7 is a diagram showing a state in which a transmission synchronization confounding signal is superimposed on an 8 kHz frame transmitted from a functional block A.

In the case where there are a plurality of types of functional blocks B and a plurality of types of functional blocks B, and the synchronizing periods are different from each other, a counter is operated based on the frames extracted in the functional blocks B, and a frame signal having a necessary period Regenerate FIG. 4 (3) is a diagram showing the transmission synchronization confounding signal extracted in the function block B, and FIG. 4 (4) is the transmission synchronization confounding signal extracted in the function block B created again by the counter in the function block B. FIG. 8 is a diagram showing a frame signal obtained by the above.

As described above, when the functional blocks A and B are assembled in a multi-frame, transmission is performed based on the least common cycle time among several types of the functional blocks B, and a frame is regenerated in the functional block B. It can be realized by.

As described above, in this embodiment, in order to synchronize data transmitted from the function blocks B, a plurality of function blocks B are not provided with a confounding function but are provided between the function blocks A. The confounding portion is provided to realize the confounding function of the functional block B collectively. The function block A is located on the upper side of the function block B, and a superfluous configuration can be realized by superimposing transmission synchronization signals of a plurality of connected function blocks B on this confounding portion to have a confounding function. The system can be operated efficiently.

[0021]

As described above, the present invention reduces the number of confounding signals when it is desired to synchronize the data of operation and backup systems to be transmitted in a switching system having a duplex configuration. Thus, the number of cables, the number of failure detection points, and the number of failure notification methods can be reduced. Therefore, the synchronous confounding function can be efficiently realized.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a transmission signal synchronous confounding method showing an embodiment of the present invention.

FIG. 2 is a diagram showing a frame signal between functional blocks A and B in a normal state.

FIG. 3 is a diagram showing a frame signal between functional blocks A and B when a transmission synchronous confounding signal of functional block B is superimposed.

FIG. 4 is a diagram showing a signal in which a transmission synchronous confounding signal is superimposed on an 8 kHz frame transmitted from a functional block A, and a frame signal in which the transmitting synchronous confounding signal extracted in the functional block B is re-created by a counter in the functional block B; FIG.

FIG. 5 is a diagram showing a conventional method for realizing a transmission signal synchronous confounding function.

FIG. 6 is a diagram showing a method of realizing a conventional transmission signal synchronous confounding function when there are a plurality of functional blocks B;

[Explanation of symbols]

 A Function block B Function block

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04Q 11/04

Claims (2)

(57) [Claims] 1. A transmission signal synchronous confounding method in a signal processing device of a switchboard having a duplex configuration comprising an active system and a standby system having an upper functional block and a plurality of lower functional blocks, wherein the operating system and the standby system have a plurality. In order to synchronize the data sent from each lower functional block, the upper functional block, when the synchronization cycle of each lower functional block is different, to a confounding signal between the upper functional blocks,
The transmission synchronization signal of the lower functional block is superimposed on the basis of the least common cycle time of each lower functional block, and the lower functional block operates the counter based on the frame signal extracted in the lower functional block, A method for synchronizing outgoing signals, comprising regenerating a frame signal for a block. 2. A transmission synchronizing signal comprising a frame signal between an upper functional block and a lower functional block having a normal one clock width at a timing of a cycle required for synchronizing the transmission of the lower functional block. 2. The method according to claim 1, wherein the clock signal has a width of two clocks.