JP2000175230A - Control method for remote switch in exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an exchange to control a remote switch installed remotely from the exchange through a transmission line whose transmission is conducted in a way of time division multiplex without the need for remarkable revamping for the exchange. SOLUTION: The exchange controls a remote switch 4 through a transmission line whose transmission is conducted in a way of time division multiplex by replacing a module controller having been mounted on an extension module 3 of the exchange with a remote switch interface or inserting the remote switch interface to an idle slot for an L/T card mount of the extension module 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote switch control method in which a part of an exchange is installed as a remote switch in a remote place, and a telephone in a remote place is connected to the remote switch.

[0002]

2. Description of the Related Art Conventionally, in an exchange having a relatively small line capacity, such as a private branch exchange, a method of using only a line of a specific telephone as a long-distance special line or installing another exchange is generally used. Providing a remote switch was not common in terms of economy.

[0003]

However, in the conventional method as described above, when there are telephones in remote locations and the number is not large enough to install exchanges,
A problem is that a long-distance line must be installed for each telephone, and time-division multiplexing cannot be used to reduce the cost of the line.

According to the present invention, a long-distance line between an exchange and a remote switch and a local line between the remote switch and a telephone are connected via the remote switch, thereby forming a connection between the exchange and the remote switch. It is an object to time-division multiplex transmission.

[0005]

According to a first aspect of the present invention, there is provided a power supply module having a power supply device, a common control device, a storage device, a time division switch, and a communication channel controller. A base module mounted thereon, and an expansion module having a slot in which an arbitrary number of line cards or trunk cards can be mounted, and an expansion module mounted with a module controller card for controlling the line card or trunk card, wherein the module of the expansion module By replacing the controller card with the remote switch interface card,
Line cards of a certain number or less in the extension module,
Making it movable to a remote switch, and the remote switch interface card controls a line card or a trunk card remaining in the extension module;
A line card moved via a remote switch controller card mounted on the remote switch is controlled.

According to the present invention, it is possible to move a line card to be mounted on an extension module of an exchange to a remote switch, and time-division multiplex transmission between the exchange and the remote switch.

According to a second aspect of the present invention, there is provided a method for controlling a remote switch in an exchange according to the first aspect of the present invention, wherein a module controller card of an extension module is replaced with a remote switch interface card and a remote slot is inserted into an empty slot. A switch driver card is inserted, and the remote switch driver card controls a line card moved to the remote switch via a remote switch controller card mounted on the remote switch, thereby increasing the number of controllable remote switches. It is characterized by the following.

According to the present invention, the number of remote switches can be increased only by inserting a remote switch driver card into an empty slot of an extension module.

According to a third aspect of the present invention, there is provided a method for controlling a remote switch in an exchange, comprising: a power supply module equipped with a power supply unit; and a basic module equipped with a common control unit, a storage device, a time division switch, and a communication path controller. An expansion module having a slot in which any number of line cards or trunk cards can be mounted, and an expansion module having a module controller card for controlling the line card or the trunk card, and a remote switch interface card in an empty slot of the expansion module By inserting a remote control, a line card of the remote switch is controlled via a remote switch controller card mounted on the remote switch.

According to the present invention, a remote switch can be controlled without creating an empty slot that cannot be used for an extension module.

According to a fourth aspect of the present invention, there is provided a method for controlling a remote switch in an exchange according to the third aspect of the present invention, wherein a remote switch interface card is inserted into an empty slot in another empty slot of the extension module. A remote switch driver card is inserted, and a line card of the remote switch is controlled via a remote switch controller card mounted on the remote switch to increase the number of controllable remote switches.

According to the present invention, a plurality of remote switches can be controlled without creating an empty slot that cannot be used for an extension module.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (a) is a system configuration diagram showing an embodiment of the present invention, wherein 1 is a power supply module for supplying operating power to an exchange body, and 2 is a common control device for controlling the exchange body. (CC) (not shown), storage device (ME
M) (not shown), a basic module including a communication path controller (SPCNT) (not shown) including a time division switch, etc., 3 is a line card or a trunk card (hereinafter referred to as an L / T card) and controls it For example, an additional module composed of a module controller (MCNT) card, and a mounting space for the additional module is further added on the additional module to constitute a basic frame of the switch body.

Although not shown in the figure, a rack for expansion comprising three power modules and a space for mounting the additional module is provided, and is designed to meet the demand for a larger number of lines.

Reference numeral 4 denotes a remote switch to be controlled by the present invention, which comprises an L / T card and a remote switch control (RSCNT) card for controlling the L / T card, and is installed at a remote location with respect to the exchange body.

The switching unit is connected in a time-division multiplex manner using a low-loss line such as a long-distance metallic cable, coaxial cable or optical cable.

Reference numeral 5 denotes a telephone connected directly from the exchange body via a local cable, and reference numeral 6 denotes a telephone connected from the remote switch 4 via a local cable.

FIG. 1B shows a conventional switch body without the remote switch 4 and, in the example shown in FIG. 1, shows a case where an additional module is mounted also in a space for installing an additional module.

FIG. 2 is a block diagram of an apparatus for controlling an L / T card connecting telephone 5 and telephone 6 in the embodiment of the present invention.

In FIG. 1, reference numeral 7 denotes a communication path controller (SPCNT) mounted in the basic module.

8 is a module controller (MCNT)
In the case where the module controller (MCNT) 8 is used alone, it comprises an SPCNT interface 81 that is an interface with the communication path controller (SPCNT), and an L / T controller 82 that controls the line circuit and the trunk circuit. , X in FIG.

That is, in the prior art, the SPCNT interface 81 and the L / T control unit 82 are directly connected,
The L / T card in the same module was controlled.

Reference numeral 9 denotes a remote switch interface (R
SINF) and the module controller (MCNT) 8
And a route distribution unit 9 for distributing a route to the telephone 5 and a route to the telephone 6 via the remote switch 4
1. A data multiplexing / demultiplexing unit 92 for time-division multiplexing or demultiplexing digital audio data, and a remote interface 93 which is an interface to the remote switch 4.

In this embodiment, one remote switch interface (RSINF) card 9 can control up to 16 L / T cards.

Module controller (MCNT) 8
Is the remote switch interface (RSINF) 9
When used as a part of, the connection of Y in FIG. 2 is performed.

Reference numeral 10 denotes a remote switch controller (R
SCNT) and remote switch interface (RS
INF) 9 and a remote interface 101 which is an interface circuit for a remote switch driver (RSDRV) 11 to be described later, a data multiplexing / demultiplexing unit 102 for time-division multiplexing or demultiplexing of digital audio data, and a line circuit and a trunk circuit. And is mounted on the remote switch 4.

11 is a remote switch driver (RSD)
RV), which is composed of the above-described remote interface 93 and is used in addition to the remote switch interface (RSINF) 9 to increase the number of remote switches 4.

FIG. 3 is a mounting diagram of the extension module 3 when the telephone 5 is controlled by the conventional technique shown in FIG. 1B, and shows a module controller (MCNT) card 8 (connection of X by MCNT 8 in FIG. 2). ), Slot 0
16 L / T cards 0 to 15 are controlled, and a module controller (MCNT) card 8 is controlled by a communication path controller (SPCNT) 7 mounted on the basic module 2 (not shown in FIG. 1).

In the figure, cards are inserted in all 16 slots, but it is sufficient to mount only necessary numbers according to the required number of telephones and trunks.

In the example of FIG. 3, to place the telephone at a remote location,
Since each line circuit is spatially separated, a long-distance metallic cable, coaxial cable, optical cable, or the like must be drawn by the number of telephones, and as in the embodiment of the present invention, the installation distance is kept in a time-division multiplexed manner. Cannot be stretched.

FIG. 4 is a mounting diagram showing one embodiment of the present invention. In place of the module controller (MCNT) card 8 in FIG. 3, a remote switch interface (RS) is used.
INF) Card 9 is used. In this case, the internal connection of the module controller (MCNT) 8 included in the remote switch interface (RSINF) card 9 is the connection of Y in FIG.

The remote switch interface (RSI)
The remote interface 93 in the NF card 9 is connected to a remote switch controller (R) of the remote switch 4.
SCNT) Remote interface 10 in card 10
Connected to 1.

The digital voice data from the exchange to the remote switch, which has been time-division multiplexed by the data multiplexing / demultiplexing unit 92, is separated by the data multiplexing / demultiplexing unit 102 for each line circuit. Control the / T card to control the phone.

In the embodiment of FIG. 4, four L / T cards can be transferred to the remote switch 4, and the four card slots on the exchange body become empty, so that the L / T card cannot be mounted.

In the embodiment of the present invention shown in FIG. 5, one remote switch interface (RSINF) card 9 has three remote switch drivers (RSDRV).
With the addition of card 11, 4 per card
4 can be moved to the remote switch 4 side, and the remote switch 4 side receives the four L / T cards with the remote switch controller (RSCNT) card 10 as in the case of FIG. Control.

Also in this case, the L / T card mounted on the exchange body is transferred to the remote switch 4, so that the empty slots of the extension module 3 on the exchange body cannot be used.

In the example of FIG. 5, the slot 00 of the L / T card is used.
To 02 remote switch driver (RSDRV) 1
1 is mounted, but since the wiring of the connector of the slot is designed so that either may be inserted, it is not necessary to change the wiring only by replacing the card.

FIG. 6 shows an example of a mounting method for eliminating useless empty slots. A module controller (MCNT) card 8 (X-connection in FIG. 2) is connected to 16 L / T cards of the same extension module. It is installed so that it can be controlled.

In order to control the remote switch 4, a remote switch interface (RSINF) card 9 is mounted in an arbitrary slot, for example, a slot 05.

The remote switch interface (RSI)
Since the NF) card 9 can control one remote switch 4, three L / T cards can be mounted in the extension module 3 more than in FIG.

FIG. 7 is another example of a mounting method for eliminating useless empty slots in the same manner as in FIG. 6, and can be said to be an improvement of FIG.

That is, by mounting one remote switch interface (RSINF) card 9 and three remote switch driver (RSDRV) cards 11 in arbitrary continuous slots, for example, slots 05 to 08, One remote switch 4 can be connected, and 12 L / T cards can be mounted on an extension module of the exchange body.

The 12 L / Ls mounted on the extension module
The T card is controlled by a module controller (MCNT) 8.

The remote switch interface (RSI)
The NF) card 9 is designed to be able to control 16 L / T cards with one card. However, when only one remote switch is controlled as shown in FIG. 6, the example shown in FIG. Such a function for controlling the remaining 12 L / T cards is eliminated.

[0045]

According to the present invention, the module controller (MCNT) card 8 is replaced with the remote switch interface (RSINF) card 9 or the remote switch interface (RSINF) card 9 is inserted into an empty slot of the L / T card. By doing so, control of the remote switch 4 becomes possible.

Moreover, since digital voice data can be transmitted in a time division multiplexed manner between the exchange and the remote switch 4, the transmission path can be made economical.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram according to an embodiment of the present invention;
And a system configuration diagram according to the related art.

FIG. 2 is a block diagram showing control when a remote switch 4 is connected to an exchange.

FIG. 3 is a mounting diagram of an extension module according to the related art.

FIG. 4 is an extension module 3 according to one embodiment of the present invention.
FIG.

FIG. 5 is a mounting diagram of an extension module 3 and a remote switch 4 according to another embodiment of the present invention.

FIG. 6 is a mounting diagram of an extension module 3 and a remote switch 4 according to another embodiment of the present invention.

FIG. 7 is a mounting diagram of an extension module 3 and a remote switch 4 according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 power supply module 2 basic module 3 extension module 4 remote switch 5 telephone connected to switch body 6 telephone connected to remote switch 7 speech channel controller (SPCNT) 8 module controller (MCNT) 9 remote switch interface (RSINF) 10 remote Switch Controller (RSCNT) 11 Remote Switch Driver (RSDRV)

Claims (4)

[Claims] 1. A power supply module having a power supply device, a basic module having a common control device, a storage device, a time-division switch, and a speech path controller, and a slot in which an arbitrary number of line cards or trunk cards can be mounted. And an extension module equipped with a module controller card for controlling the line card or the trunk card. By replacing the module controller card of the extension module with a remote switch interface card, a fixed number or less in the extension module And the remote switch interface card controls a line card or a trunk card remaining in the extension module, and is mounted on the remote switch. And controlling the movement and the line card via a remote switch controller card, a control method of a remote switch in the exchange, characterized in that. 2. A module controller card of an extension module is replaced with a remote switch interface card, a remote switch driver card is inserted into an empty slot, and the remote switch driver card is inserted via a remote switch controller card mounted on a remote switch. The method according to claim 1, wherein the number of controllable remote switches is increased by controlling the line card moved to the remote switch. 3. A power supply module having a power supply device, a basic module having a common control device, a storage device, a time-division switch, and a speech path controller, and a slot in which an arbitrary number of line cards or trunk cards can be mounted. A remote switch controller card mounted on the remote switch by inserting a remote switch interface card into an empty slot of the expansion module, the remote switch controller card comprising a module controller card for controlling the line card or the trunk card; And controlling a line card of the remote switch via the remote switch. 4. A remote switch driver card is inserted into another empty slot of the extension module in which a remote switch interface card is inserted into an empty slot, and the remote switch is connected to the remote switch via a remote switch controller card mounted on the remote switch. The method according to claim 3, wherein the number of controllable remote switches is increased by controlling the line card.