JPS6361599A - Exchange remote concentration interstation - Google Patents

Abstract

PURPOSE:To communicate without using the network of a master station by letting two remote concentration interstation communicate through a mutual connection line provided between themselves. CONSTITUTION:If a subscriber A make a call from a telephone set 101, a remote concentration station controller 314 controls a channel switch 315 to select a tone generator 316. Accordingly, the subscriber A can confirm the tone by the telephone set 101. The dial number reaches the remote concentration station controller 314. The controller 314 transmits signals to the mutual connection line (c) via an order extraction circuit 313 and a channel switch 315. A remote concentration station controller 324, upon receiving the signals, issues a calling command to a remote terminal controller 206. The remote terminal controller 206 issues a calling command against a telephone set 201 via a subscriber's circuit 202. As a result, the mutual communication between the remote concentration stations can be executed without using the network of the master station.

Description

Detailed Description of the Invention [Industrial Field of Application] The switching device between remote concentrators of the present invention is particularly applicable to a switching device between remote concentrators that can perform communication between remote concentrators without going through a network within a master station. Relating to a switching device.

[Conventional technology]

Generally, communication between remote concentrators is performed via a network within the master station.

FIG. 3 is an explanatory diagram of a conventionally used general communication method. Here, a remote concentration station 100 and a remote concentration station 20 are shown.
0 is shown communicating with the master station 300 via the master station 300. A signal from a telephone set 101 in a remote concentrator 100 is sent to a subscriber circuit (LC) 102 and a subscriber line concentrator switch (LS).
W1103, encoding/decoding circuit (CODEC) 104,
and data transmission interface equipment (DT I)
The signal is output to the transmission line a via 105 and transmitted to the master station 300. Signal output operations above nine are controlled by a remote terminal control (RLOC) 106.

The signal transmitted to the master station 300 is sent to a data transmission interface device (DTI) 311, a multiplexing and demultiplexing circuit ((
D) MUX) 312, and order insertion/removal circuit (INS/
network (NW) 30 i via DRP) 313
Reach at t. The above signaling is controlled by a remote concentrator controller (RCTL) 314.

The signal reaching the network 301 is sent to an order insertion/extraction circuit 323 controlled by a remote concentrator controller 324;
The signal is output to the transmission line via the multiplexing/demultiplexing circuit 322 and the data transmission interface device 321 and is transmitted to another remote concentrator 200 .

This transmission signal is transmitted to the telephone set 201 via the data transmission interface device 205, the encoding/decoding circuit 204, the subscriber line concentration switch 203, and the subscriber circuit 202 in the remote concentrator 200. The remote terminal controller 206 controls the signal input operations described above.

As described above, a call from subscriber A to subscriber B is made via network 301 within base station 300. A call from subscriber B to subscriber A is also made through the reverse route to that described above. A tone generator (TONE) 302 is connected to the network 301, and a tone can be transmitted from the master station 300 to a predetermined remote concentrator station as needed. Also, network 3
01 is controlled by the CPU 303.

[Problem that the invention seeks to solve]

As mentioned above, conventional switching equipment between remote concentrators performs switching operations via the network within the master station, so if the master station's network is not operating due to some accident, the exchange between remote concentrators There was a problem that communication could not be performed at all. In other words, the CP of the master station
If an error or the like occurs in U303, the network 301 cannot be operated, and communication between the remote concentrator 100 and the remote concentrator 200 becomes completely impossible.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a switching device between remote concentrators that can perform mutual communication between remote concentrators without going through the network of the master station.

[Means for solving problems]

The present invention provides a plurality of transmitting/receiving devices connected to each remote concentrator for transmitting and receiving signals, and a common network connected to transmitting and receiving signals to each of the plurality of transmitting and receiving devices. A switching device between remote concentrators is provided with an interconnection line for connecting predetermined transmitting and receiving devices among the plurality of transmitting and receiving devices, and a tone generator and a switching device are provided in the predetermined transmitting and receiving device. Set up a vessel,
If the switch is a network device, a tone generator, or any other transmitting/receiving device connected via an interconnection line,
The system allows one to be selected and connected to a remote concentrator.

〔Example〕

The present invention will be described below based on illustrated embodiments.

FIG. 1 is an explanatory diagram of a communication system using a switching device between remote concentrators according to this embodiment.

Similarly to FIG. 3, an example is shown in which the remote line concentrator 100 and the remote line concentrator 200 communicate via the master station 300. Here, the same components as in FIG. 3 are designated by the same reference numerals.

The difference in configuration compared to the method shown in FIG. 3 is that in this method, a channel switch (C3W) is installed as a switch in the master station
315 and 325 are provided, and these channel switches are provided with tone generators (TONE) 316 and 326.

The channel switch 315 selects any one of the network 301 connected to the right side in the figure, the tone generator 316, or the channel switch 325 connected via the interconnection line C, and sends it to the order insertion/extraction circuit 313. Connecting. This selection is controlled by the remote concentrator controller 3.14. Similarly, the channel switch 325 is connected to the network 301 and the tone generator 326 connected to the right side in the figure.
, or the channel switch 315 connected via the interconnection line C, and connects it to the order insertion/removal circuit 323. This selection is controlled by remote concentrator controller 324.

Next, without going through the network 301 in the master station 300,
The operation when subscriber Δ and subscriber B communicate with each other will be explained. First, when subscriber A makes a call from telephone 101, this signal is given to remote terminal control device 106 via subscriber circuit 102. Further, a calling command from the remote terminal control device 106 is sent to the interface 10.
5, transmitted to the remote concentrator controller 314 via the transmission line a1 interface 311. The remote concentrator controller 314 connects the channel switch 315 to the tone generator 316.
let them choose. As a result, the tone sound from the tone generator 316 is transmitted to 315-313-312-311-a-1.
It is transmitted to the telephone set 101 through the route 05-104-103-102. Subscriber Δ can confirm the tone using telephone 101.

In order to call subscriber B, subscriber A manually inputs a dial number to telephone set 101.

This dial number is transmitted to the remote concentrator controller 314 through the same route as the above-mentioned calling command. When the remote concentrator controller 314 recognizes from this dial number that the station to be called is the remote concentrator 200, it sends a signal to the interconnection line C via the order insertion/removal circuit 313 and the channel switch 315. Flow. This signal is further transmitted to the channel switch 325 and the order insertion/removal circuit 32.
1 to the remote concentrator controller 324.

In response, the remote concentrator controller 324 controls the interface 321, the transmission line b, and the interface 20.
A call command is issued to the remote terminal control device 206 via 5. In response to this, remote terminal control device 206 issues a calling command to telephone 201 via subscriber circuit 202.

On the other hand, the remote concentrator control device 324 performs the operations described above and at the same time performs an operation for supplying a ring tone to the remote concentrator 100. That is, the ring tone supply command is sent via the order insertion/removal circuit 323 and the channel switch 325.
Flow to interconnection line C.

This command is further given to the remote concentrator controller 314 via the channel switch 315 and the order insertion/removal circuit 313. The remote concentrator controller 314 transmits the ringing tone generated from the tone generator 316 to 315-313-31.
The information is transmitted to the telephone 101 via the route 2-311-a-105-104-103-102. With the above operations, subscriber B
subscriber A can confirm the ringing tone, and subscriber A can confirm the ringing tone.

When subscriber B answers the call, channel switch 3
15 and 325 both make the selection to connect to the other party via interconnection line C. Therefore subscriber A-101
-102-103-104-105-a-311-31
2-313-315-c-325-323-322-3
21-b-205-204-203-202-201=
A mutual communication path called subscriber B is created, and mutual communication between the two parties becomes possible. This route does not go through network 301 at all.

Incidentally, a partial detailed view of FIG. 1 is shown in FIG. 2.

The multiplexing and demultiplexing circuit 312 actually includes a multiplexing circuit (MUX) 312a and a demultiplexing circuit (D), as shown in FIG.
MUX) 312b, and the human output of the signal is in a separate system). The same applies to the multiplexing/demultiplexing circuit 322. In addition, the order insertion/removal circuit 313 is also
In reality, as shown in FIG.
Order insertion circuit (INS) 3 that inserts orders from 4
13a and an order dropout circuit (DRP>313b) that gives an order to the remote concentrator control device 314.The same applies to the order insertion/removal circuit 323.Furthermore, the channel switch 315 includes a gate circuit (G) 315
a, a time division switch (TSW>315b), and a time division switch control circuit (TSWCTL) 315c.

The time division switch control circuit 315C controls the time division switch 31 based on the control signal from the remote concentrator control device 314.
5b is the signal from the tone generator 31G or the interconnection line C.
The gate circuit 315a has a function of selecting a signal from the gate and outputting it to the gate circuit 315a. Further, the gate circuit 315a has a function of selecting either a signal from the network 301 or a signal from the time division switch 315b based on a control signal from the remote concentrator controller 314, and outputting the selected signal to the order dropping circuit 313b. The same applies to the channel switch 325.

In the above embodiment, the interconnection line C is provided for mutual communication between the remote concentrator 100 and the remote concentrator 200, but in reality there are many remote concentrators, so Such interconnection lines may be allocated between the stations deemed necessary.

〔Effect of the invention〕

As described above, according to the present invention, in the switching device between remote concentrators, communication between two remote concentrators is performed via the interconnection line installed between the two remote concentrators, so that the communication between the two remote concentrators is It becomes possible to communicate without going through a network.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a communication system using a switching device between remote concentrators according to an embodiment of the present invention, FIG. 2 is a detailed view of a part of FIG. FIG. 2 is an explanatory diagram of a communication method. 100.200...Remote concentration station, 101.20
1...Telephone, 102.202...Subscriber circuit, 103.20
3...Subscriber line concentration switch, 104.204
... Encoding/decoding circuit, 105.205...
...Data transmission interface, 106.206...Remote terminal control device, 3
00... Master station, 301... Network, 302... Tone generator, 303... CP[J, 311.321... Data, transmission interface device, 312.322... Multiplexing and demultiplexing circuit, 312
a, 3.22a... multiplexing circuit, 312b, 3
22b...Separation circuit, 313.323...
...Order insertion/removal circuit, 313a, 323a...
・Order insertion circuit, 313b, 323b...Order dropout circuit, 314.324...Remote concentrator control device, 315.325...Channel switch, 315a, 325a... ...Gate circuit, 31
5b, 325b... Time division switch, 315C
%325C...Time division switch control circuit, 316.326...Tone generator, A, B...
...Subscriber, aSb...Transmission line, C...
...Interconnection line. Applicant: NEC Corporation Representative

Claims (1)

[Claims] It includes a plurality of transmitting/receiving devices each connected to send and receive signals to each remote concentrator, and a common network device connected to each of the plurality of transmitting/receiving devices to send and receive signals. In a switching device between remote concentrators, an interconnection line is provided for connecting predetermined transmitting and receiving devices among the plurality of transmitting and receiving devices, and a tone generator and a switching device are provided in the predetermined transmitting and receiving device. , the switching device selects any one of the network device, the tone generator, or other transmitting/receiving device connected via the interconnection line and connects it to the remote concentrator. A switching device between remote concentrators, characterized by: