JPS5833348A - Exchanging system of satellite communication - Google Patents

Abstract

PURPOSE:To ensure the connection of an originating subscriber with plural incoming subscribers with one channel of the satellite circuit in a satellite communication exchanging system including a center station and plural slave stations, by setting a device at the center station to connect plural subscribers at one time to the center station. CONSTITUTION:An originating subscriber 9 stored in a slave station dials, and an automatic connection of circuit is secured in a single direction and among the subscriber 9 and plural slave stations 6-8 with a wave of a satellite circuit connected to each stored incoming. At the same time, an automatic connection of circuit is secured in both directions and among the subscriber 9 and incoming subscribers 10-12 with a wave of the satellite circuit and by dialling the subscribers 10-12. These two functions are included in a device 3 that connects plural subscribers at one time. This device 3 is set at a center station 4. As a result, the subscriber 9 can call automatically the subscribers 10-12 and furthermore can call one of these subscribers in both directions.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a satellite communication switching system, particularly to a satellite communication switching system consisting of a central station and a large number of slave stations, and in particular to an O-circuit connection system between subscribers of the slave stations.
``Conventionally, this type of line connection system was configured such that the central station automatically connected the originating subscriber and the incoming subscriber accommodated in each slave station on a one-to-one basis using one wave of a one-hop satellite line. Therefore, it is not possible for the originating subscriber to connect to multiple terminating subscribers in one hop and one wave.

The present invention solves the above-mentioned drawbacks by providing a multi-subscriber simultaneous connection device in the central office that can automatically connect a calling subscriber to a number of receiving subscribers using one satellite line wave. This system provides a simultaneous connection system for multiple subscribers in which an originating subscriber can simultaneously send a message to multiple terminating subscribers, and furthermore, the originating subscriber can send and receive calls to and from the terminating subscriber in response to a dialing request from the terminating subscriber. be.

According to the present invention, in a satellite communication switching system consisting of a central station and a large number of slave stations, in accordance with the dial of the calling subscriber accommodated in each of the slave stations, the incoming calls from the calling subscriber accommodated in each of the plurality of slave stations are Means for automatically connecting a line in one direction using one wave of a satellite line to the ministry, and automatically connecting a line in both directions between the calling subscriber and the called subscriber based on a dial from the called subscriber using one wave of the satellite line. A satellite communication switching system is obtained, characterized in that the central station has a multi-subscriber simultaneous connection device including connection means.

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

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 1 shows a satellite station 19, a line control device 2, a multiple subscriber simultaneous connection device gL3, and a central station 4, which includes a line control device 2 and a multiple subscriber simultaneous connection device 3. Substation 5 including ground station and switchboard
89 originating subscriber 99 terminating subscriber 10-12. common line 13
It is composed of 〒moxibustion chihi 艷＋←.

Next, the operation of the configuration shown in FIG. flc1 will be explained in order. When the originating subscriber 9 dials the request number for simultaneous multi-subscriber connection to the slave station 5, the slave station 5 detects it and then sends it to the multi-subscriber simultaneous connection device in the central office 4 via the common line 13. 3, and a request confirmation signal is transmitted via the common line 13 to the slave station 5 and then to the originating subscriber 9. Subsequently, the calling subscriber 9 dials the 100 number of the first called subscriber and connects the common line 1.
3 to the multi-subscriber simultaneous connection device 3, where it is stored. Subsequently, the multiple subscriber simultaneous connection device 3 allocates frequencies to the carrier 14 of the slave station 5 and the carrier 15 of the slave station 6, tunes the slave stations 5 and 6 to transmit and receive those frequencies, and sets the carrier 140 frequency of the slave station 5. is fixed and both carriers are sent out. Subsequently, the slave station 5 on the originating side sends out an activation signal, and when the slave station 6 on the receiving side receives it, it transmits an activation confirmation signal to the slave station 5 on the originating side, calls the called subscriber 10, and sends an activation confirmation signal. The slave station 5 on the side confirms this and connects the line between both subscribers.

Next, the connection to the 211th called subscriber 11 will be explained.

After the line connection to the first terminating subscriber 10 is completed, the originating subscriber 9 returns to Oahu, and only the transmission carrier of the slave station 6 accommodating the first terminating subscriber 10 is stopped.

Subsequently, the number of the second called subscriber 11 is dialed and the number is transmitted via the transmitting carrier 14 to the multi-subscriber connection device 3 and stored therein. The multiple subscriber simultaneous connection device 3 fixes the transmitting carrier 140 frequency of the slave station 5 on the calling side as it is, and transmits that carrier 1 to the slave station 7 on the receiving side.
Further, a frequency is assigned to the carrier 16 of the slave station 7, and the slave station 5 is tuned to receive the carrier 16. Subsequently, the slave station 5 on the originating side sends out an activation signal, and when the slave station 7 on the receiving side receives it, it transmits an activation confirmation signal to the slave station 5 on the originating side, calls the called subscriber 11, and sends the activation confirmation signal. The slave station 5 on the originating side confirms this and connects the line between both subscribers.

Next, the connection to the third terminating subscriber 12 is also connected in the same way as in the case of the t-th terminating subscriber 11. Subsequently, the originating subscriber 9 goes off-hook, thereby stopping the transmission carrier 17 of the slave station 8 on the terminating side, and completing the one-way line connection from the originating subscriber 9 to the plurality of terminating subscribers 10 to 12.

Furthermore, one terminating subscriber 10 among the plurality of terminating subscribers
When the user sends an off-hook and special number call request to the multi-subscriber simultaneous connection device 3 via the common line 13, the multi-subscriber simultaneous connection device 3 confirms it and sends the call request signal to the slave station 5. It is transmitted via the common line 13. When the slave station 5 confirms the signal, it transmits a call request signal from the terminating subscriber to the originating subscriber 9, and then the originating subscriber 9 goes off-hook, dials the terminating subscriber's 100 number, and transmits the call via the carrier 14. and transmits it to the multiple subscriber simultaneous connection device 3. Subsequently, the multiple subscriber simultaneous connection device 3 confirms the signal, assigns a frequency to the carrier 15 of the slave station 6, tunes the slave station 5 to receive the carrier 15, transmits the carrier 15, and starts the slave station 6. When the signal is transmitted to the slave station 5, the slave station 5 transmits an activation confirmation signal, and the slave station 6 confirms the signal, the line between the originating subscriber 9 and the terminating subscriber 10 is bidirectionally connected. The other terminating subscribers 11, 12 are connected only in the transmission direction of the originating subscriber 9. Furthermore, the transmitting carrier 15 of the slave station 6 on the called side is stopped when the off-footer of the calling subscriber 9 is removed, and the sending subscriber 9
There is only one-way transmission to 12.

In this embodiment, in the transmitting example, the slave station 5 on the transmitting side
The effect of this embodiment is that the originating subscriber 9 can simultaneously transmit a call to a plurality of terminating subscribers 10 to 12, and can also independently receive the messages transmitted by the terminating subscribers. It is possible.

As explained above, the present invention automatically transmits calls in one direction from the originating subscriber accommodated in a KN slave station to incoming calls accommodated in a plurality of slave stations using one wave of the satellite line by dialing the originating subscriber accommodated in a KN slave station. A multi-subscriber simultaneous connection device comprising a function to connect a line, and a function to automatically connect a line in both directions between the calling subscriber and the called subscriber using one wave of a satellite line in response to a dial from the called subscriber. By equipping the central office with a central office, the calling subscriber can automatically call a number of the called subscribers, and can also have a two-way conversation with one of the called subscribers.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention. l...Satellite station, 2...Line control device,
3... Multiple subscriber simultaneous connection device, 4...
・Central station, 5 to 8...Slave station, 9...Calling subscriber, 10S 12-...Calling subscriber, 13...
...Common line, each carrier of 14 to 17°°"°°° slave stations 5 to 8.

Claims (1)

[Claims] In a satellite communication exchange system consisting of a central station and a number of slave stations, the dial of the originating subscriber accommodated in each slave station is used.
means for connecting the originating subscriber to the terminating subscribers respectively accommodated in a plurality of slave stations in one direction using one wave of the satellite line; 1. A satellite communication switching system characterized in that said central station has a plurality of subscriber simultaneous connection device including means for automatically connecting subscribers in both directions using one satellite line wave.