JP2662555B2 - Link method and exchange between different types of terminals having different link systems - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a link method and an exchange between heterogeneous terminals, and more particularly to a packet terminal (hereinafter simply referred to as a packet terminal) capable of selecting a partner and a non-packet terminal (hereinafter referred to as an NRM terminal) using a multi-drop control function. ), And an exchange that enables the link.

[0002]

2. Description of the Related Art FIG. 6 shows a virtual connection between packet terminals capable of selecting a partner.

Each packet terminal 20 _j (j: a numerical suffix for distinguishing each terminal) has its own address and also has a function (key, dial, etc.) for inputting the address of the intended destination.

On the other hand, the exchange 10a is provided with a numerical processing means 101 for receiving a destination address inputted from the calling apparatus, and a switching means for linking the calling apparatus and the called apparatus based on the numerical value analyzed by the numerical processing means. 102, whereby each packet terminal _20j can be linked to any other party.

FIG. 7 shows an NR having no partner selection function.
It shows a connection state between M terminals. Each NRM terminal 3
0 _k (k: a numerical suffix for distinguishing each terminal) is connected to one line in a multidrop manner, and for example, a host computer 30 is connected via the exchange 10b.

[0006] In this configuration, switch 10b is provided with a polling unit 201, the polling unit 201 issues a polling NRM terminal 30 _k, exchange 10b
Is configured so that the polling receiving means 201 and the NRM terminal 30 _k are linked to each other (NRM procedure).

On the other hand, the host computer 30 is also
Switching means, and exchanges with the exchange 10b.
NRM terminal 30_kIs the NRM procedure between the switch 10 and
Linking is performed using an asynchronous NRM procedure. This
Thereby, the NRM terminal 30 _kAnd host computer 3
0 means that the link is established via the exchange 10b. here
In the NRM terminal 30_kData from the exchange 10b
Packetized by the packet processing means 203, and
The data from the computer 30 is packetized by the exchange 10b.
Is unraveled. In this method, the opponent is fixed, so-called
It becomes PVC (Permanent Virtual Call).

[0008]

By receiving the polling from the NRM terminal 30 _k is switch 10, as described above [0007], exchange 10 (or host computer 30)
Link to it is possible to realize the link partner at this time is fixed, to select any opponent in yet Na come <br/>.

Japanese Patent Application Laid-Open No. Sho 60-117851 discloses a
Each non-packet terminal and packet net connected to each other
A PAD (packet assembly and disassembly) device is installed between the
And this PAD device is used for each non-packet terminal.
Assembling and non-packet data and packet data respectively
And decompose the packet to the packet network.
A plurality of circuits for performing data transmission according to a predetermined control procedure for communication
By having a PAD circuit consisting of multiple
A method of connecting terminals to a branch line and performing data transmission
It has been disclosed. However, in this case, each non-packet
Each terminal must have a PAD circuit,
It becomes a very complicated and expensive device.

The present invention has been made in view of the above-described conventional circumstances, and
It is an object of the present invention to provide a method and an exchange for linking an NRM terminal of a method of linking by a procedure and a packet terminal capable of selecting a partner.

[0011]

The present invention employs the following means to achieve the above object. That is, as shown in FIG. 1, a link method or apparatus between a packet terminal and an NRM terminal, wherein for each NRM terminal 30 _k , a main address Am corresponding to the line to which the NRM terminal 30 _k belongs; An NR address An consisting of a sub-address As corresponding to each NRM terminal is allocated, the NR address An is compared with each NRM terminal 30 _k and stored in the conversion table 11, and the NR address An from the packet terminal 20 _j is stored. the switch 10 when there is a call signal was included, the conversion table 11 provided in the switch 10 to poll identifies the NRM terminal 30 _k corresponding to the NR address an, the both terminals 20 _j,
30k is linked.

[0012]

[0013]

[Action] and the main address Am corresponding to the line which belongs NRM terminal 30 _k to the calling signal of a packet terminal 20 _j as described above, with the inclusion of NR address An consisting subaddress corresponding to NRM terminal 30 _k, exchange By providing a conversion table 11 in which the NR address An and the NRM terminal 30 _k are stored in a comparison manner, the polling means 17 of the exchange 10 polls the NRM terminal 30 _k specified by the NR address An. be able to. Thereby, the packet terminal 20 _j
Link to and from the NRM terminal 30 _k becomes possible.

[0014]

[0015]

FIG. 1 is a conceptual diagram showing a functional block diagram of an exchange to which the present invention is applied, FIG. 2 is a conceptual diagram of a system diagram to which the present invention is applied, and FIGS. It is a flowchart which shows the procedure of invention.

First, as shown in FIG. 2, a switching terminal 10 is connected to a packet terminal 20 _j and an NRM terminal 30 _k is connected in a multi-drop manner. The packet terminal 20 _j is provided with a packet address Ap, a main address Am _l (1: a numerical suffix for distinguishing each line) for each multi-drop line, and a sub-address As _k for each terminal. (k: a numerical subscript for distinguishing each terminal) is provided.

[0017] Then, in the switch 10 as shown in FIG. 1, NRM corresponding thereto from the NR address An _k
An exchange table 11 capable of referring to the terminal 30 _k ,
Preferably provided a conversion table 12 from the terminal 30 _k can refer to packet address Ap of the NRM terminal 30 _k as a communication partner packet terminal 20 _j.

Further, the CPU 15 of the exchange 10 has
Means 16 while the packet terminal 20
_jFrom the NRM terminal 30_kNR address
Switch An (main address Am_l+ Sub address As_k)
Is included in the calling signal (see FIG. 3).
). This NR address An is obtained by the numerical processing means 16.
Received, where the NR address An is parsed and
It is input to the exchange table 11. This conversion table 1
1, the NRM terminal 30 starts from the NR address An. _kTo
The specified NRM terminal 30_kAgainst poly
The polling is performed by the polling means 17 (FIG. 3).

The NRM terminal 30 _k sends a response signal UA to the exchange 10 in response to the polling, and
0 issues a call confirmation CC to the packet terminal 20 _j (FIG. 3). This allows the packet terminal 20 _j to send N
This means that the link to the RM terminal 30 _k has been established.

Thereafter, data is transmitted to each other (see FIG. 3).
), Recovery request CQ from packet terminal side, exchange 10
NRM terminal 30_kRelease instruction to DISC. P, NRM
Terminal 30 _kConfirmation of response from UA. F, switch 10
Ket terminal 20_jConfirmation CF for restoration is made (Fig. 3
). Conversely, the NRM terminal 30_kIf there is a recovery request from the
The recovery instruction CI is issued to the packet terminal, and the packet terminal 20
_jIssues a recovery confirmation CF. In response, the exchange
10 is a recovery confirmation UA. Issue F (Fig. 3
).

On the other hand, although not directly related to the present invention, NR
The link from the M terminal 30 _k to the packet terminal 20 _j starts with polling by the polling means 17 from the exchange 10. That is, when the polling means 17 of the exchange 10 polls a specific NRM terminal 30 _k , only when the NRM terminal 30 _k has a transmission (reception) request, the response SNRM. F is output to the exchange 10 (FIG. 4).

The exchange 10 is provided with a response confirming means 18 for responding to the polling by the NRM terminal 3.
The polling means 17 checks the NR address An (main address Am + sub address As) of 0 _k . Here, since the NRM terminal 30 _k can link only with a specific partner, the packet table of the partner NRM 30 _k is _obtained from the exchange table 12 that associates the specific NRM terminal 30 _k with the address Ap of the packet terminal 20 _j of the link partner. _{Specify j} . Thus, switch 10 issues a call request CN from calling unit 19 to the particular packet terminal 20 _j (FIG. 4).

Next, the packet terminal 20 _{j connects} to the exchange 10
The exchange 10 issues a call confirmation CA to the
Confirmation instruction UA to the M terminal 30 _k. Issue P (FIG. 4). Thereby, the NRM terminal 30 _k to the packet terminal 20 _j
The link to was made. After that, when the packet terminal 20 _j issues a recovery request CQ after the data transmission has been performed mutually (FIG. 4), the exchange 10 sets the NRM terminal 30 _k.
The restoration request DISC. P, and the NRM terminal 30 _k responds with the recovery confirmation UA. F, and the exchange 10 issues a recovery confirmation CF to the packet terminal _20j (FIG. 4).

Conversely, a recovery request DIS from the NRM terminal 30 _k
C. If there is P, switch 10 issues recovery instruction CI to the packet terminal 20 _j, packet terminal 20 _j is the restoration confirmation CF
Put out. In response to this, the exchange 10 notifies the NRM terminal 30 _k of the recovery confirmation UA. Issue F (FIG. 4).

FIG. 5 shows an exchange table 1 used in the present invention.
This shows a state in which 1 and 12 are shared. When the conversion table is configured as described above, there is an effect that the capacity of the table can be reduced.

[0026]

As described above, the present invention provides an NRM
Since the terminal has an address and a table storing the address is stored in the exchange, if the NRM terminal having the above address is designated by the packet terminal capable of selecting the other party, the NRM terminal to which the exchange is designated is designated. , And the link between the two becomes possible.

[0027]

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an exchange to which the present invention is applied.

FIG. 2 is a system diagram to which the present invention is applied.

FIG. 3 is a flowchart showing a communication procedure according to the present invention.

FIG. 4 is a flowchart showing another communication procedure according to the present invention.

FIG. 5 is a conceptual diagram showing another embodiment of the exchange table used in the present invention.

FIG. 6 is a conceptual diagram of a conventional example.

FIG. 7 is a conceptual diagram of a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Switch 11 Conversion table 12 Conversion table 16 Numerical processing means 17 Polling means 18 Response confirmation means 19 Calling means 20 _j Packet terminal 30 _k NRM terminal Am Main address An NR address Ap Packet address As Sub address

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-123241 (JP, A) JP-A-2-239751 (JP, A) JP-A-60-117851 (JP, A)

Claims (2)

(57) [Claims] And 1. A party selectable packet terminal (hereinafter simply referred to as packet terminal), a non-packet terminal (hereinafter referred to NRM terminal) between the link method using multidrop control function, For each NRM end end Te, assign a main address corresponding to the line which belongs the NRM end late, the <br/> subaddress by Li Cheng NR addresses corresponding to each NRM terminal, the N
R address and the NRM ends late compared to leave yield <br/> placed in conversion tables, the exchange when a calling signal was contained by late packet end Rino the NR address is , link, characterized in that the NRM end end corresponding to the result the NR address translation tape <br/> b le provided on the switching equipment <br/> identified by polling, to link the two ends end A link method between heterogeneous terminals using different methods. 2. An exchange linking a packet terminal (hereinafter simply referred to as a packet terminal) capable of selecting a partner and a non-packet terminal (hereinafter referred to as an NRM terminal) using a multi-drop control function . Assigned NRM terminal attribute
Address and the NRM terminal corresponding to the line
An NR address comprising a corresponding subaddress, and an NRM
A conversion table stored in comparison with a terminal, and a call signal including the NR address from the packet terminal.
When there is, process the numerical value, the above conversion table
To the NRM terminal specified by the conversion table.
An exchange consisting of polling means for hanging a ring.