JP2513422B2 - Time division speech network configuration method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a time division speech network of a digital switching system, and more particularly to a method for interconnecting a plurality of time division speech passage switches by a time division multiplex space division switch including a cell switch. The present invention relates to a divided channel network configuration system.

[0002]

2. Description of the Related Art A conventional digital exchange system is 64K.
64 including xn-bit seconds and H0 / H1 services
Provide K-based services. Then, the space division switch outputs the 64 Kbit / sec time slot multiplexed to each input highway to the same time slot as the designated output highway.

Therefore, 64K × n bits / sec and H
In a connection form that provides a bandwidth of 64 Kbit / sec or more such as 0 / H1 service, a plurality of time slots are used,
Need to provide exchange service.

On the other hand, in order to provide a broadband switching service in addition to the above-mentioned services provided by the digital switching system, a digital speech path network composed of a time division speech path switch and a space division switch, and cell-by-cell exchange. It is composed of a cell switch network that provides services and provides switching services.

[0005]

However, in the switching system having the above structure, 64K × n bits / second and H
A 64K base service including 0 / H1 service uses a digital communication network, and a broadband switching service uses a cell switching network. Therefore, the usage efficiency of the communication network is poor.

Therefore, conventionally, there has been proposed a switching system in which a cell / 64K bit channel converter is connected to each of the time division speech network and the cell switching network to realize interconnection between the time division speech network and the cell switching network. However, there is a problem that the terminal usage efficiency of the switch network is reduced.

[0007]

A time division speech network configuration system according to the present invention is a time division multiplexing space division switch composed of a plurality of output route-specific channel multiplexers, a plurality of cell assembling devices and a cell switch. Is connected between a plurality of input-stage time-division speech path switches and a plurality of output-stage time-division speech path switches, and the output route-based channel multiplexer is controlled by the space-division switch controller.
Also, the time division input to the input stage time division speech path switch
The multiplexed signal is time slot exchanged and output channel-specific channel
To the channel multiplexer, where space division switch control is performed.
Connection destination time sharing for each time slot sent from the device
Consecutive time slots based on the signal that indicates the communication path
The input signal is output so that the time slot becomes
Multiplex m channels for each time division switch on the power stage side.
Cell assembly by adding the identification number of the time division switch at the connection destination
Sent to the device, where
Edit cell header based on m time slots to cells
The divided cells are sent to the cell switch, and the cells received here are
It is output to the output port specified in the cell header.
is there.

[0008]

The present invention can provide both 64K base services and broadband switching services.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of a time division speech network construction system according to the present invention. In the figure, 1a
1n are input-stage time-division speech path switches, and these input-stage time-division speech path switches 1a to 1n exchange the input time-division multiplexed signals by time-slots and output them.

Reference numeral 2 is a space division switch control device, and this space division switch control device 2 outputs a signal instructing a connection destination time division communication path for each time slot.

Reference numerals 3a to 3n denote channel multiplexers for each output route, and the channel multiplexers 3a to 3 for each output route.
n is, for each time slot, based on a signal instructing the destination time-division speech path, the time slots to be transmitted to the specific destination time-division speech path are multiplexed so as to be consecutive m time slots. The split switch identification number is added and output.

Reference numerals 4a to 4n denote cell assembling apparatuses. The cell assembling apparatuses 4a to 4n edit the cell header based on the connection destination time division switch identification number, divide the m time slots into cells, and output the cells.

Reference numeral 5 denotes a cell switch, which has a cell switching function, and has a plurality of cell assembling devices 4.
The cells generated in a to 4n are received, and the received cells are output to the output port designated by the control information of the cells, that is, the header of each cell.

6a to 6n are cell disassembling devices, and the cell disassembling devices 6a to 6n are time division multiplexed 64K bits / sec and 64K × n bits / sec of the received cellized user speech path information. Convert to user communication information channel and output. Reference numerals 7a to 7n are output stage time division speech path switches.

The output-route-specific channel multiplexers 3a to 3n, the cell assembling devices 4a to 4n, and the cell switch 5 constitute a time division multiplex space division switch. In general, known space division switches and space division switches
The switch controller has multiple input highways and multiple outputs.
Power highway and accommodated on each input highway
The information in the time slots being
It is designed to perform exchange connection processing by storing it in the time slot of B. In this case, each input highway
The time position relationship of each time slot above does not change, and
Output to the corresponding output highway for each imslot
It In addition, this space division switch control device,
Each time slot that is multiplexed on the input highway
And control information, that is, the output highway number of the exchange connection destination
In advance, set Teiki 憶 a predetermined memory No., the output C
It also controls the space division switch based on the Eway number.
It has become. The invention of the present application is such a known space division.
Control information used in the split switch control device, that is, each
For each time slot multiplexed on the input highway
Switch the output highway number of the connection destination of the space division switch
By outputting from the control device 2, each output route
Connections corresponding to each of the channel multiplexers 3a to 3b
The time slots to be transmitted to the time-division channel are consecutive
Input stage time-sharing speech path switch
The time-division speech path of the output stage of the user information from the channels 1a to 1n
The switch is multiplexed for each switch.

Next, the operation of the time division speech network construction system having the above construction will be described. First, the time-division multiplexed signals input to the input stage time-division speech path switches 1a to 1n are time-slot exchanged by the time-division speech paths,
It is sent to the output-route-specific channel multiplexers 3a to 3n.

Therefore, each of the output-route-specific channel multiplexers 3a to 3n specifies a particular time-division channel based on a signal sent from the space-division switch control device 2 for each time slot. Input stage time-division speech path switches 1a to 1n so that the time slots to be transmitted to the connected time-division speech path become consecutive m time slots.
User communication information of 64 Kbits / second and 64K × n bits / second sent from is multiplexed by m channels for each time division switch on the output stage side.

Then, the user communication information added with the connection destination time division switch identification number is added to the cell assembling devices 4a to 4n.
Output to. Each of the cell assembling devices 4a to 4n edits the cell header based on the connection destination time division switch identification number, divides the m time slots into cells, and sends the cells to the cell switch 5.

Then, the cell switch 5 outputs the received cell to the output port designated by the header of each cell. Then, the cell disassembling devices 6a to 6n respectively receive the cellized user channel information sent from the output port of the cell switch 5 and time-division-multiplexed 64 kbit / sec and 64K × n bit / sec. User communication information channel, and output stage time division speech path switch 7a-
Can be sent to 7n.

In this way, the time division multiplex space division switch including the cell switch 5 can be used for both 64K base services including 64K × n bits / sec and H0 / H1 services and broadband services.

[0021]

As described in detail above, according to the time division speech path network configuration system of the present invention, a plurality of input stage time division speech channel switches and a plurality of output stage time division speech channel switches are provided. By providing a time division multiplex space division switch between them and interconnecting them, it is possible to provide both a 64K base service and a broadband switching service.

In addition, it is possible to improve the use efficiency of the communication network and reduce the amount of required equipment. Further, since the cell switch network and the time division network can be connected to each other, there is an effect that the interconnection processing can be simplified.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a time division speech network configuration system according to the present invention.

[Explanation of symbols]

 1a to 1n input stage time division speech path switch 2 space division switch control device 3a to 3n output channel-specific channel multiplexing device 4a to 4n cell assembly device 5 cell switch 6a to 6n cell disassembly device 7a to 7n output stage time division speech communication Road switch

Claims (2)

(57) [Claims] 1. A channel multiplexer according to a plurality of output routes,
A time division multiplex space division switch composed of a plurality of cell assembling devices and cell switches is connected between a plurality of input stage time division speech path switches and a plurality of output stage time division speech path switches, and the above output channel-specific channels are connected. A time division communication network configuration system characterized in that a multiplexing device is controlled by a space division switch control device to enable provision of 64K base service and broadband switching service. 2. The time division multiple input according to claim 1, wherein the input stage time division communication path switch is input.
Duplex signals are time-slot-exchanged to output channel-specific channels.
To the multiplexer and where it is sent from the space division switch controller.
Based on the signal that indicates the destination time-division call path for each
Therefore, the time slots are not consecutive m time slots.
Input signal is output by the time division switch on the output stage side
M-channel multiplexed to the connection destination and time-division switch identification
A number is added and sent to the cell assembly device, where the cell header is based on the connection time division switch identification number.
Edit the data to divide m time slots into cells
Sent to the switch and received here by the output port specified in the cell header.
A method of constructing a time-division speech path network characterized by being output to a network
formula.