JP2002185553A - Relay system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable relay among switch boards without reviewing the number systems of them even when adopting different number systems. SOLUTION: An SVC controller 13 finds out special numbers in incoming numbers transmitted from line interface parts 151-15m and 161-16m, identifies the line interface parts 151-15m and 161-16m to be relayed and transmits the incoming numbers. The line interface parts 151-15m and 161-16m receive the incoming numbers from the SVC controller 13, edit them according to the number edit conditions previously informed and then transmit them to lines 31-3n and 51-5m connected to themselves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line relay technology, and more particularly to a technology suitable for relaying between exchanges employing different number systems.

[0002]

2. Description of the Related Art Conventionally, a plurality of exchanges (for example, PBX: Private Branch Exchange) which are remotely located have been
Construction of a communication system that enables a call between a voice terminal (for example, an extension telephone) accommodated in a certain exchange and a voice terminal accommodated in another exchange by relaying through a trunk line such as M (Asynchronous Transfer Mode). Is being done.

[0003]

In the above communication system, if the numbering system handled by the sending exchange is different from the numbering system handled by the receiving exchange, for example, if the sending exchange uses a special number and an extension number If the receiving exchange uses a number system consisting of only extension numbers, the receiving exchange uses the special number and extension number sent from the sending exchange. Cannot process. For this reason, when relaying between existing exchanges, conventionally, it was necessary to review and unify the numbering system adopted by each exchange.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to eliminate the need to review the numbering system of these exchanges even when each exchange adopts a different numbering system. To enable relaying between these exchanges.

[0005]

In order to achieve the above object,
The present invention provides a relay device for relaying a line from each exchange,
A function is provided in which the destination number from the sending exchange is edited so as to match the numbering system adopted by the receiving exchange, and then transmitted to the line to the receiving exchange.

More specifically, the relay apparatus of the present invention comprises a plurality of line interface units provided at least one for each route and connected to a line on a corresponding route, and a plurality of line interface units. And a relay unit for relaying between connected lines.

The relay unit includes a storage unit in which a number system, a route, and a number editing condition are stored in association with each other, and a number of a called number received from a line connected to the plurality of line interface units. Using the system and the correspondence between the number system and the route stored in the storage means, a line that receives the called number (referred to as a first line)
Route selecting means for selecting a route to be relayed, and the correspondence between the route selected by the route selecting means, the route stored in the storage means, and the number editing condition, Number editing means for editing a called number, the first line,
By relaying a line (referred to as a second line) connected to the line interface unit corresponding to the route selected by the route selection unit, the called number edited by the number editing unit is And relay control means for transmitting to the second line.

According to such a relay device, even if the exchanges connected to the respective routes adopt different number systems, the destination exchange from the exchange on the transmission side adopts the exchange number on the reception side. After being edited to match the numbering system,
Since the data is sent out to the line to the receiving exchange, the relay between the exchanges can be performed without reviewing the number system of each exchange.

In the above, if the line connected to the line interface unit is a virtual channel on the ATM, the relay device must be connected to the exchange via the ATM multiplexer connected to the line. become.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

FIG. 1 is a schematic configuration diagram of a communication system to which one embodiment of the present invention is applied.

As shown in the figure, a communication system according to the present embodiment is a PBX 4a containing a voice terminal 6 such as an extension telephone.
₁ to 4A _n is connected ATM multiplexer 2 ₁ to 2 _n, respectively through a trunk line 3 ₁ to 3 _n on the ATM network, ATM
It is configured to be connected to the multiplexing / relay device 1. Here, ATM multiplexer / repeater 1 through the voice line 5 ₁ to 5 _m, and is also connected to PBX4b ₁ ~4b _m containing the voice terminal 6.

In such a configuration, ATM multiplexing /
The relay device 1 converts a call sent from a certain PBX 4 into a line (a relay line 3 _{1 to} 3 _n and a voice line 5 ₁ ) on the route to the PBX 4 specified by a special number (station number) in the called number.
To 5 _m ) to perform call control. At this time, the number system of the called number is the P specified by the special number in the called number.
If the number system is different from BX4 (for example,
When the PBX 4 specified by the special number in the called number handles only the extension number), the called number is edited and relayed so that the PBX 4 can process the call, and call control is performed.

Next, the ATM multiplexer / relay device 1 will be described in more detail.

The devices (ATM multiplexer 2, PBX 4, and voice terminal 6) other than the ATM multiplexer / relay device 1 constituting the communication system shown in FIG. Detailed description is omitted.

FIG. 2 is a schematic configuration diagram of the ATM multiplexer / relay device 1 shown in FIG.

In the figure, reference numeral 11 denotes a main control unit, reference numeral 12 denotes a storage unit, and reference numeral 13 denotes an SVC (Switched Virtual Channel).
The control unit 14 is a SAR (Segmentation and Reassen
BLy) control unit, reference numeral 15 ₁ to 15 _m is voice line interface unit, reference numeral 16 ₁ ~ 16 _n are relay line interface unit, and reference numeral 17 is a switch unit.

[0018] The storage unit 12 voice line interface unit 15 ₁ to 15 _m and the relay line interface unit 16 ₁
When there is an incoming call to one of the ~ 16 _n, a routing information storage table 121 the routing information is stored for identifying a route to be relayed to the call, to each path of the side street line The number editing condition for editing the called number is stored so that the PBX 4 connected to the PBX 4 (connected if the line is the trunk line 3 and connected via the line and the ATM multiplexer 2) can process the incoming call. The number editing condition storage table 122 is stored.

FIG. 3 shows a routing information storage table 1.
21 shows an example of registration contents.

As shown in the figure, in the routing information storage table 121, for each special number included in the called number, the identification number of the line interface unit connected to the line on the route to which the call with the called number is to be relayed is stored. They are registered in association with each other. In this example, as shown in FIG.
The special number of ₁ is "50", the special number of PBX4b _m is "60", P
BX4a ₁ of special number "70", and, special number PBX4a _n is assumed to be a "80".

[0021] Therefore, the voice line interface unit 15 ₁ connected to the voice line 5 ₁ to PBX4b ₁ is special number "5
0 ", the voice line interface unit 15 _m connected to the voice line 5 _m to PBX4b _m is the special number" 60 ", PBX
Trunk lines 3 to the ATM multiplexer 2 ₁ connected to 4a ₁
Connected relay line interface unit 16 ₁ to ₁ on special number "70" and connected to PBX4a _n ATM
Relay line interface unit 16 _n connected to the trunk line 3 _n to multiplexer 2 _n is the special number "80", it is registered in association respectively.

FIG. 4 shows a number editing condition storage table 122.
The following is an example of the registered contents of the above.

As shown in the figure, the number editing condition storage table 122 contains, for each route, the identification number of the line interface unit connected to the line on the route and the destination number to be sent to the route. Editing conditions (addition and deletion of called numbers) are registered in association with each other. In this example, as shown in FIG. 1, the PBX 4b ₁ can process an incoming call with the called number “50-xxxx” including its own special number “50” and extension number, and the PBX 4b _m The special number "90" different from the special number "60" and the called number "90"
-Xxxxxx "can be processed, and PBX
4a ₁ can process an incoming call with a called number "70-xxxx" consisting of its own special number "70" and an extension number,
Then, the called party number of PBX4a _n is the extension number only "×××
It is assumed that an incoming call accompanied by "x" can be processed.

[0024] Therefore, the voice line interface unit 15 ₁ and PB connected to the voice line 5 ₁ to PBX4b ₁
Editing condition of the called party number associated with the trunk line interface unit 16 ₁ connected to the trunk line 3 ₁ to the ATM multiplexer 2 ₁ connected to X4a ₁ is set without adding or deleting . The editing condition of the called party number associated with the voice line interface unit 15 _m connected to the voice line 5 _m to PBX4b _m, remove the 2 digits of the called number, special number "90 to the head from the sky Is set to be added. Also, ATM, which is connected to the PBX4a _n
Editing condition of the called party number associated with the trunk line interface 16 _n connected to the trunk line 3 _n to multiplexer 2 _n is set to delete 2 digits of the called number.

The main control section 11 controls each section of the ATM multiplexing / relay apparatus 1 in a centralized manner. For example, the main control unit 11
Is stored in the routing information storage table 12 from the storage unit 12.
1 is read out and notified to the SVC control unit 13. Also,
The main control unit 11 reads the number editing condition storage table 122 from the storage unit 12. Then, each editing condition of the called number stored in the number editing condition storage table 122 is
Informs the line interfaces _{15 1 ~15 m, 16 1 ~16} n which is associated with the editing condition.

Voice line interface units 15 ₁ to 15
_m, when there is an incoming call from the corresponding voice lines 5 ₁ to 5 _m, and notifies the SVC controller 13 extracts the call control information called number such as from information from the relevant line. Also, the SVC control unit 13
When receiving more call control information, which is the transmission to the corresponding voice lines 5 ₁ to 5 _m. At this time, the called number received from the SVC control unit 13 is edited according to the editing conditions notified in advance from the main control unit 11, and then the corresponding voice line 5 is edited.
Send to _{1 to} 5 _m .

[0027] In addition, voice line interface unit 15 ₁ to
15 _m is adapted to transmit to the switch unit 17 from the information from the corresponding voice lines 5 ₁ to 5 _m by extracting a voice call information, the voice call information transmitted from the switching unit 17,
And it sends to the corresponding voice lines 5 ₁ to 5 _m.

Trunk line interface units 16 _{1 to} 16
_n receives a cell storing call control information such as destination number via the corresponding trunk line 3 ₁ signaling path on to 3 _n, and notifies the SAR controller 14. Also, SA
Upon receipt of the cell that contains the call control information from the R control unit 14, and sends this to the corresponding trunk line 3 ₁ to 3 _n on the signaling path. At this time, the destination number stored in cell received from the SAR controller 14, edit according to pre-notification from the main control unit 11 has been edited condition, corresponding trunk line 3 ₁ signaling path on to 3 _n Send to

Further, the trunk line interface units 16 ₁ to 16 ₁ .
16 _n, together with extracts a voice call information from a cell from the speech channel on the corresponding trunk line 3 ₁ to 3 _n and transmits to the switching unit 17, a voice call information transmitted from the switching unit 17 to the cell stored, and sends it to the corresponding trunk line 3 ₁ to 3 _n on the call path.

The SAR control unit 14 converts the call control information into cells and decells, and
Relaying the exchange of call control information between ₁ ~ 16 _n and SVC controller 13.

The SVC controller 13 receives the called party number from the voice line interface unit 15 ₁ to 15 _m, by using the routing information storage table 121 notified by the pre-main control unit 11, a special number in the deposition number unit associated its dependent line interfaces _{15 1 ~15 m, 16 1 ~16} n
To identify. Then, the specified line interface unit and the voice line interface unit 15 ₁ that sent the called number are connected.
Call control is performed by relaying the exchange of call control information between and 15 _m . Also, the specified line interface unit and the voice line interface unit 15 ₁ that has transmitted the called number.
The switch unit 17 is relayed so as to relay the exchange of the voice call information between up to 15 _m .

Further, the SVC control unit 13 is connected to the trunk line interface units 16 _{1 to} 16 _n via the SAR control unit 14.
When receiving more called party number, previously the main control unit 11 by using the routing information storage table 121 notified by the line interface unit 15 ₁ to 15 associated with the special number in the deposition number _m, 16 ₁ ~ 16 _{Specify n} . Then, the exchange of call control information between the relay line interface unit 16 ₁ ~ 16 _n that sent the deposition number and specified line interface unit, and relayed through the SAR controller 14 performs call control. Also controls the switch unit 17 to relay the exchange of voice communication information between the relay line interface unit 16 ₁ ~ 16 _n that sent the deposition number and specified line interface unit.

The switch unit 17 is provided between the line interface units (between the voice line interface units 15 ₁ to 15 _m, between the relay line interface units 16 _{1 to} 16 _n , or part 15 ₁ to 15 _m and the relay line interface 1
6 _{1 to} 16 _n ) to relay voice call information.

Next, the operation of the ATM multiplexing / relay device 1 will be described.

FIG. 5 is a diagram for explaining the operation flow of the ATM multiplexer / relay device 1 shown in FIG.

[0036] As described above, the voice line interface unit 15 ₁ to 15 _m, when from the corresponding voice lines 5 ₁ to 5 _m is an incoming call, extracts the call control information such as called party number from the information from the line Then, it notifies the SVC control unit 13. The relay line interface unit 16 ₁ ~ 16 _n receives a cell storing call control information such as destination number via the corresponding trunk line 3 ₁ signaling path on to 3 _n, which SAR controller 14 Notify.

When the SVC control unit 13 receives the called number from the voice line interface unit or from the trunk line interface unit via the SAR control unit 14 (S501), the SVC control unit 13 receives the routing number notified from the main control unit 11 in advance. It is checked whether or not the information storage table 121 has a line interface unit associated with the special number in the destination number (S502).

If there is a line interface unit associated with the special number in the called number (Yes in S503)
s) The line interface unit is specified as a route to which the call should be relayed. Next, it is checked whether or not a fault such as disconnection has occurred in the line connected to the line interface unit (S504), and if no fault has occurred (S50).
(No in 5), and it is further checked whether or not there is a free line connected to the line interface unit (S50).
6). If there is a vacancy (Ye in S507)
s) controlling the line interface unit that sent the called number and the line interface unit specified as the route to be relayed, so that the line interface unit that sent the called number receives the called number; Call control is performed by relaying the exchange of call control information with the line whose vacancy has been confirmed (S508). At this time, the line interface unit specified as the route to be relayed is the SVC control unit 13
The received call number is edited in accordance with the editing conditions previously notified by the main control unit 11, and then transmitted to the line whose vacancy has been confirmed.

Next, when the call control is established (Yes in S509), the SVC control unit 13 controls the switch unit 17 so that the line interface unit that sent the called number receives the line that received the called number. Is connected to the line whose vacancy has been confirmed, which is connected to the line interface unit specified as the route to be relayed, and exchanges voice communication information between these lines (S510).

On the other hand, if the line interface unit associated with the special number in the called number is not registered in the routing information storage table 121 (No in S503), Is registered in the routing information storage table 121, but the line connected to the line interface unit has a fault or has no free space (S505, S5).
If the call control is not established (No in 07), or if the call control is not established (No in S509), the call is released (S511).

Next, a specific example of the relay of the called number realized by the ATM multiplexing / relay device 1 will be described.

[0042] Figure 6, in FIG. 1, the voice terminal 6 accommodated in PBX4b _1, when calling to voice terminals 6 accommodated in another PBX 4, ATM multiplexer / repeater 1 performs the called party number Is shown.

As shown in FIG. 6, when the audio terminal 6 accommodated in PBX4b ₁ makes a call, ATM multiplexer / repeater 1, the called party number sent from the audio terminal 6 via the PBX4b ₁ Receives and checks the special number in the called number.

[0044] Here, when special number is "70", from the routing information storage table 121 shown in FIG. 3, to set the relay destination of the call to the line 3 ₁ to PBX4a _1, to the line 3 ₁ called party number Is sent. At this time, from the number editing condition storage table 121 shown in FIG. 4, since the special number editing condition for wearing number "70" does not, the called party number received from the audio terminal 6 via the PBX4b _1, neat relay destination line 3 and sends it to ₁ (C601).

Further, when the special number is "80", from the routing information storage table 121 shown in FIG. 3, to set the relay destination of the call to the line 3 _n to PBX4a _n, the line 3
Sends the called number to _n . At this time, since the editing condition for the called number with the special number “80” is “delete the first two digits” from the number editing condition storage table 121 shown in FIG.
through b ₁ Remove the top two digits "80" from the destination number received from the audio terminal 6, then is transmitted to the line 3 _n relay destination (C602).

[0046] Further, when the special number is "60", from the routing information storage table 121 shown in FIG. 3, to set the relay destination of the call to the line 4 _m to PBX4b _m, the line 4
Sends the called number to _m . At this time, since the editing conditions for the called number having the special number “60” are “delete the first two digits” and “add the first two digits“ 90 ”” from the number edit condition storage table 121 shown in FIG. 4, the PBX 4b ₁ The first two digits “60” of the called number received from the voice terminal 6 through “9”
Change to 0 ", then is transmitted to the line 3 _n relay destination (C 603).

As described above, the ATM multiplexing /
According to the relay device 1, even if the PBX 4 connected to each route adopts a different numbering system, the PB
Since the called number from X4 is edited so as to match the numbering system adopted by the receiving PBX4 and then sent out to the line to the exchange 4 on the receiving side, the numbering system of each PBX4 does not need to be reviewed. However, relay between the PBXs 4 is possible.

The embodiment of the present invention has been described above.

It should be noted that the present invention is not limited to the above embodiment, and various modifications are possible within the scope of the invention.

For example, in the above embodiment, one line interface unit for connecting to a line on the route is provided for each route, but a line for connecting to a line on the route is provided for one route. A plurality of interface units may be provided.

[0051] In the above embodiments, a case of applying the present invention to the ATM multiplexer / repeater 1 for relaying between trunk line 3 ₁ to 3 _n on the voice lines 5 ₁ to 5 _m and ATM as an example As described above, the present invention can be widely applied to circuit-switched (including ATM-switched) switches and repeaters.

[0052]

As described above, according to the present invention,
Even if each exchange uses a different numbering system,
Relaying between these exchanges is possible without reviewing the numbering system of these exchanges.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a communication system to which an embodiment of the present invention is applied.

FIG. 2 is a schematic configuration diagram of the ATM multiplexing / relay device 1 shown in FIG.

FIG. 3 is a diagram showing an example of registered contents of a routing information storage table 121 stored in a storage unit 12 shown in FIG.

FIG. 4 is a diagram showing an example of registered contents of a number editing condition storage table 122 stored in a storage unit 12 shown in FIG. 2;

FIG. 5 is a diagram for explaining an operation flow of the ATM multiplexing / relay device 1 shown in FIG. 2;

FIG. 6 is a diagram showing the contents of relaying the called number performed by the ATM multiplexing / relay device 1 when the voice terminal 6 accommodated in the PBX 4b ₁ calls the audio terminal 6 accommodated in another PBX 4 in FIG. FIG.

[Explanation of symbols]

1 ... ATM multiplexer / repeater 2 ₁ to 2 _n ... ATM multiplexer 3 ₁ to 3 _n ... trunk line _{4a 1 ~4a n, 4b 1 ~4b} m ... PBX 5 1 ~5 m ... voice line 6 ... Voice Terminal 11 Main control unit 12 Storage unit 13 SVC control unit 14 SAR control unit 15 ₁ to 15 _m Voice line interface unit 16 _{1 to} 16 _m Relay line interface unit 17 Switch unit

Claims (5)

[Claims] 1. A relay device for relaying between lines, comprising: a plurality of line interface units provided at least one for each route for connecting to a line on a corresponding route; A relay unit for relaying between lines connected to the network, wherein the relay unit stores a number system, a route, and a number editing condition in association with each other; and the plurality of line interface units. Using the number system of the called number received from the line connected to, and the correspondence between the number system and the route stored in the storage means, the line receiving the called number (referred to as the first line). ) Using a route selecting means for selecting a route to be relayed, and a correspondence relationship between the route selected by the route selecting means, the route stored in the storage means and the number editing condition, Said wear Number editing means for editing a signal, the first line, and a line (referred to as a second line) connected to the line interface unit corresponding to the route selected by the route selection unit. And a relay control means for transmitting the called number edited by the number editing means to the second line. 2. The relay device according to claim 1, wherein said route selecting means stores a route associated with a number system of a called number received from said first line in said storage means. A relay device that releases the call using the called number when the call is not performed. 3. The relay device according to claim 1, wherein at least one of the plurality of line interface units is included.
A relay line interface unit for connecting to a virtual line on an ATM (Asynchronous Transfer Mode), and a relay line interface unit for connecting to a voice line. 4. The repeater according to claim 3, the switch connected to the repeater via the voice line interface unit and the voice line of the repeater, and the voice terminal accommodated in the switch. A network system comprising: 5. The relay device according to claim 3, an ATM multiplexer connected to the relay device via the relay line interface section of the relay device and a virtual channel on an ATM, and the ATM multiplexer. And a voice terminal accommodated in the exchange.