JPH04100337A - Time division multiplexer - Google Patents

Abstract

PURPOSE:To attain the connection between terminal cards of 1:N(>=2) configuration without extension of the terminal card by referencing a cross reference table between the terminal cards so as to act the terminal card like a terminal card connecting one by one to a terminal card at a transmission destination. CONSTITUTION:When a connection terminal 1x sends a data to a new terminal card 12 while taking a connection terminal equipment 9a of one time division multiplexer(TDM) 3b as an opposite terminal equipment, the new terminal card 12 identifies a destination address, references a reference table between terminal cards and acts like a terminal card connected one by one to a terminal card 7a of the connection terminal equipment 9a to send a data between TDMs 3a, 3b. When the connection terminal 1x sends a data to the new terminal card 12 while taking a connection terminal equipment 9b of the time division multiplexer(TDM) 3b as an opposite terminal equipment, the new terminal card 12 acts like a terminal card connected one by one to a terminal card 7b of the connection terminal 9b. Thus, the connection between terminal cards of 1:N(>=2) configuration is attained without extension of the terminal card.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention uses a time division multiplexing device (hereinafter referred to as TDM) that multiplexes and transmits information from a plurality of terminal cards, each of which is given a unique number. ).

[Conventional technology]

FIG. 3 is a block diagram showing the configuration of a transmission system using conventional general TDM, and in the figure, 18 to 1n, 9a
~9n is the connection terminal, 2a~2 n +8!1~8n is T
Low-speed line 3a for data transfer between DM and each connected terminal
, 3b are TDMs, 4a to 4n, and 7a to 7n are terminal cards provided in rDM3m and 3b, respectively, and are given unique numbers. 5a and 5b are TDMs 3a and 3b, respectively.
terminal cards 4a to 4n and 7a, respectively.
~High-speed card that multiplexes and transmits information from In, 6
is a high-speed line connecting the high-speed cards 5a and 5b, and in this transmission system, each terminal card 2a-2n and 7a-
7n are connected one to one.

FIG. 4 also shows how one connection terminal is connected to multiple connection terminals (for example, connection terminals 9a and 9b') IIc of one TDM 3b.
It is a block diagram showing the configuration of a transmission system in the case of connection (first conventional example). In the figure, 1X is one connection terminal that connects to a plurality of connection terminals, and 10 is a system that receives information from the connection terminal 1x. Switch to change the terminal card to be imported (hereinafter referred to as
SW).

Moreover, FIG. 5 is a block diagram showing the configuration of a transmission system when a TDM 3m connected to an exchanger 22 (hereinafter referred to as PBX) and a plurality of TDMs 3b to 3d are connected (second conventional example). In, 38-3d are TDM, 5a-5
c is provided in the T D M 3 a, and each TD
High speed card connecting to M3b, 3c, 3d, 68~6C
are high-speed lines connecting the high-speed cards 5a to 5C and TDMs 3b to 3d, respectively, 211 to 21m are telephones, and 22 is a PBX, in order to connect them one-to-one to the terminal cards in each TDM 3b, 3c, and 3d. Terminal card 4c r4 via low-speed lines 2c, 2e, 2g, respectively
e, connected to 4g.

Next, the operation will be explained.

Generally, the TDM 3a is provided with terminal cards 4a to 4n corresponding to the respective connection terminals 18 to 1n, and data from these low speed terminal cards 4a to 4n is collected and multiplexed by the high speed card 5a, and data is sent to one side via the high speed line 6. It is transmitted to the high speed card 5b in the TDM 3b. As shown in FIG. 6, this is performed using a part of the high-speed circuit M6 indicated by "A" in the time slot (FIG. 6(b)) (note that FIG. 6(a)
indicates MFP: Multi Frame Pulse). Then, the high-speed card 5b that received the multiplexed data
are terminal cards 7a each corresponding to the data on a one-to-one basis.
〜In, and connect it to the connection terminal 9 via the low-speed line 6.
Transmit to 8-9n. Note that the above-described operation is the same when data is transmitted in the reverse direction.

On the other hand, in the first conventional example shown in FIG. 4, by connecting the connection terminal 1x and the terminal card 4a by 5w10, data transmission between one TDM 3b and the connection terminal 9a is performed via the terminal card 7a. can be done. Then, by switching the SW10 of the connected terminal 1x and connecting it to the terminal card 4b, data transmission with another connected terminal becomes possible.

Furthermore, in the second conventional example shown in FIG.
When there is a connection request from one of the 1m, the PBX 22 identifies part of the dialed number of the other party and sends the TDM (
TDM3b, 3c, 3d) K connected low speed port 1!2C, 2e.

2g and the telephone that made the connection request, and data transmission is performed by the operations described above.

[What the invention attempts to solve! Title]

Since the conventional time division multiplexing device is configured as described above, in the first conventional example, if one connected terminal is allowed to freely connect with any of the N connected terminals, 1
N terminal cards are required in the TDM for each connected terminal, and in the second conventional example, when the number of TDMs at the other end increases, corresponding terminal cards must be added.
Both conventional examples had problems such as an increase in the scale of the equipment.

This invention was made to solve the above-mentioned problems, and provides a time division multiplexing device that enables connection between 1 to N (≧2) terminal cards without increasing the number of terminal cards. The purpose is to

[Means to solve the problem]

In the time division multiplexing device according to the invention of the first claim, one terminal card identifies a transmission destination address of data transmitted from a connected terminal, and transmits data by referring to a correspondence table between terminal tables. This terminal card is designed to operate as a terminal card that is connected one-to-one with the terminal card to be used.

Further, in the time division multiplexing device according to the second claim, one terminal card identifies a part of the dial number of the destination telephone, and the destination telephone is determined by referring to a correspondence table between the terminal cards. It is designed to operate as a terminal card that is connected one-to-one with terminal cards in other connected TDMs.

[For production]

The terminal card of the time division multiplexing device according to the first claim is a terminal card that identifies a data transmission destination address and is connected one-to-one with the transmission destination terminal card by referring to a correspondence table between the terminal cards. Since the system operates as a single terminal card, only one terminal card is required for each transmission destination in order to establish a 1-to-N connection between terminal cards.

Further, the terminal card of the time division multiplexing device in the second claim identifies a part of the dial number of the destination telephone, and refers to the correspondence table between the terminal cards to identify the terminal card in the transmission destination TDM and the terminal card. Since it operates as a terminal card that is connected one-to-one, it is possible to use only one terminal card for each TDM to be transmitted in order to perform one-to-one connection between terminal cards between multiple TDMs. Make it.

[Embodiments of the invention]

Hereinafter, an embodiment of the invention of the first claim will be described with reference to the drawings. FIG. 1 shows a T according to an embodiment of the invention of the first claim.
4 is a block diagram showing the configuration of a transmission system using DM, and the same or equivalent parts as in the conventional transmission system using TDM (FIG. 4) are given the same reference numerals, and the explanation thereof will be omitted.

In the figure, 1x is a connection terminal of the TDM 3a, and here it is assumed that a connection request is made to two connection terminals 9a and 9b of one 10M3b. In addition, 12 is a new terminal card in TDM3a, and one TDM3b for which connection was requested
It operates as a terminal card that should be connected one-to-one with its own terminal card.

Next, the operation of the invention according to the first claim will be explained.

First, the connection terminal 1x is one of the connection terminals 9a of 10M3b.
New terminal card 1 via low-speed line 2x as the other party's terminal
When data is transmitted to 2, this new terminal card identifies the destination address, confirms that it is the connected terminal 9a of one 10M3b, and refers to the correspondence table between terminal cards to select the terminal card of the connected terminal 9a. By operating as a terminal card connected one-to-one with TDM 7a (as terminal card 4a in FIG. 4), data transmission between TDM 3a and 3b is performed.

Further, the connection terminal is one of the connection terminals 9b of 10M3b.
New terminal card 1 via low-speed line 2x as the other party's terminal
When data is transmitted to 2, this new terminal card identifies the destination address, confirms that it is the connected terminal 9b of one 10M3b, and refers to the correspondence table between terminal cards to select the terminal card of the connected terminal 9b. By operating as a terminal card (terminal card 4b in FIG. 4) that is connected one-to-one with 'l' DM 3a and DM 3b, it performs data transmission between 'l'DM 3a and 3b.

Next, an embodiment of the invention according to the second claim will be described with reference to the drawings. FIG. 2 shows a T according to an embodiment of the invention of the second claim.
5 is a block diagram showing the configuration of a transmission system using DM, and the same or equivalent parts as in the conventional transmission system using TDM (FIG. 5) are given the same reference numerals, and explanations thereof will be omitted.

In the figure, the new terminal card 12 operates in the same manner as the one in the invention of the first claim.
It is connected to each high speed card 5a, 5b, 5c for transmission to 0M3b, 3c, 3d, respectively.

Next, the operation of the invention according to the second claim will be explained. When the PBX 22 connects to the low-speed line 2e due to a connection request from one of the telephones 21a to 21m, this new terminal card 12 identifies a part of the dialed number of the other party and selects which TDM (10M3b, 3c). , 3d), and operates as a terminal card that is connected one-to-one with the terminal card of the destination telephone by referring to the correspondence table between terminal cards. Accordingly, multiple TDM3Jl, 3b.

Data transmission between 3c and 3d is performed.

〔Effect of the invention〕

As described above, according to the invention of the first claim, one terminal card is connected to the destination terminal card by identifying the data transmission destination address and referring to the correspondence table between the terminal cards.
According to the invention of the second claim, one terminal card is operated as a terminal card that is connected in a one-to-one manner. By referring to the correspondence table, it operates as a terminal card that is connected one-to-one with the terminal card in the transmission destination TDM, so it can be used for one-to-one connection between TDMs or one-to-N connection between multiple TDMs. can be done with one terminal card,
This has the effect of enabling flexible operation and reducing the size of the equipment.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a transmission system using TDM according to an embodiment of the invention of the first claim, and FIG. 2 is a transmission system using TDM according to an embodiment of the invention of the second claim. The block diagram showing the system configuration, Figure 3 is a conventional general TDM.
A block diagram showing the configuration of a transmission system using
FIG. 5 is a block diagram showing the configuration of a transmission system using TDM in the second conventional example. FIG. 6 is a block diagram showing the configuration of a transmission system using TDM in the second conventional example. FIG. In the figure, 1a to 1n, 9a to 9n are connection terminals, 31
~3d is TDM, 4a ~4n, 7a~7
n is the terminal card, 12 is the new terminal card, 211~21m
is a telephone, and 22 is a PBX. In addition, the same symbols in the figures indicate the same or equivalent parts. Patent applicant Mitsubishi Electric Corporation (2 others) Figure 3 Figure 4 210-21m Telephone

Claims (2)

[Claims] (1) Using a time division multiplexing device that multiplexes and transmits information from multiple terminal cards, each of which is given a unique number, the terminal card in this time division multiplexing device and one time division multiplexing device are used. In a transmission system configured to connect one-to-one with terminal cards in a converting device, each terminal card identifies the destination address of data transmitted from the connected terminal, and creates a correspondence table between the terminal cards. 1:N (≧2) by operating as a terminal card that is connected one-to-one with the terminal card corresponding to the transmission destination address
A time division multiplexing device characterized in that it connects between terminal cards. (2) Using a time division multiplexing device that multiplexes and transmits information from terminal cards each given a unique number, the terminal card in any time division multiplexing device and any other time division multiplexing device are used. In a transmission system configured to connect terminal cards in division multiplexers on a one-to-one basis, each terminal card in each time division multiplexer receives a dial number transmitted from a connected exchange. By identifying a part and referring to the correspondence table between terminal cards and operating as a terminal card in one-to-one correspondence with the terminal card corresponding to the dialed number, one-to-one correspondence can be established between multiple time division multiplexers. N
A time division multiplexing device characterized by connecting (≧2) terminal cards.