JPS5851648A - Line connecting system - Google Patents

Abstract

PURPOSE:To prevent malfunction due to dissidence of attribute, through the comparison between the attribute in a signaling frame addressed to an opposing station and that of a incoming terminal, by transmitting the frame superimposed on the attribute data of a calling terminal at the request of line connection in storing the attribute of the terminal to a storage circuit. CONSTITUTION:Through the use of a signaling frame (SG), the attribute of a terminal station device connecting various terminals is stored in an attribute data storage circuit 72, the attribute of a call from a terminal connecting circuit 73-1 and that of a calling terminal from the circuit 72 are superimposed at a control circuit 74 to form the addressed SG. This SG is transmitted to a transmission line 60-1 via a frame multiplexing circuit 64 and the like. A terminal device receiving the call establishes the frame synchronism at a frame synchronizing circuit 66, and a terminal address comparison circuit 67 compares the attribute data of an incoming terminal and said data in the SG. When they are dissident, the SG representing that the connection of line is unconditionally impossible is returned to a calling terminal station device, allowing to prevent malfunction due to the dissidence of the attribute.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal device that connects various types of terminals, and particularly uses a line connection method KrI4 that can prevent wires between different types of terminals.

FIG. 1 is a conceptual diagram of nine communication lines using a loop network as an example.

In the figure, 1 to 4 are terminal equipment, 5 is a transmission line, 11 to 13°21
~23.31~33.41~43 is the terminal, for example 11,
21.31.41.12.22.32.42,13゜2
3, 33, and 43 are groups of terminals of the same type, and terminals of different types exist between each group.

FIG. 2 is a diagram showing a conventional system ring/7 frame 0 configuration, and 50 is a control indicating the type of frame.

Information area (hereinafter referred to as CTL), 51 is a destination address area (hereinafter referred to as DA), 54 is a source address area (hereinafter referred to as OA), 52 and 55 are terminal equipment address areas (hereinafter referred to as OA). 53, 56 is a terminal address area (hereinafter referred to as C) (hereinafter referred to as A), 57 is a request code area (hereinafter referred to as CMD), and 58 is a response code area (hereinafter referred to as 18P).

Previously 0@11M! In the I-connection system, for example, when there is a connection request from terminal 11 to terminal 21 of terminal device 2, terminal device 1 sends [2
In the diagram, CTL50 of Sidana ring e7 frame is set as a signaling frame, DA51C)NDM52t-2 is set, CHA53 is set to 21, NDA55 of 0A54 is set to 1 and CHA56 is set to 11, CMD57 is set as a connection request,
R8P5g is set as 0 and sent to the snow on the side of the horse. If the terminal 21 is in a connectable state, the terminal device 2 sets the CTL50 of the signaling frame as the signaling 07 frame and DA51
)NDA52'[-1, CllA33 as 11,
0A54ONDA 55 is set to 2, CHA56 is set to 21, CMD57[-0 is set, R8P58 is returned to the terminal device 1 as connectable, and line Yt is connected. At this time, even if a connection request is made for a different type of terminal 22 with different attributes, the connection will be made if the terminal 22 is in a connectable state. However, in this case, an error is detected in the transmission and reception between the terminals 11 and 22, and the line is disconnected. However, unnecessary overconfidence reduces the utilization efficiency of the line and also deteriorates the serviceability of the network.

The purpose of the Zero Departure is to provide a line connection method that prevents erroneous connections between different types of terminals by checking the terminal O attribute of incoming and outgoing calls at the terminal equipment in order to eliminate the above O drawback. .

In order to achieve the above object, the present invention stores the attributes of a terminal connected to a terminal device in the terminal device, and sends out a 7-signal-7 frame on which the attributes of the calling terminal are superimposed,
Upon receiving the signaling/7 frames, the 9th terminal equipment compares the attribute data of the called terminal with the 0 attribute data of the 7 signaling/7 frames, and if they do not match, connection of the line is unconditionally impossible. The feature is that a signaling frame 7 indicating that the calling terminal is connected is sent back to the terminal type side to which the calling terminal is connected.

An embodiment of the present invention will be described below with reference to the drawings. Third
The figure shows a terminal station device according to an embodiment of the present invention.

Figures 1 and 4 are configuration diagrams of a 7-gunaring-7 frame (hereinafter referred to as SG) according to an embodiment of the present invention.

Items with the same functions as those in Diagram 2 are indicated by the same symbols.

60-1, 60-2 is a transmission line, 61 is a frame receiving circuit, 62 is a delay circuit, 63 is a 7 ray separation circuit, 64 is a 7
frame multiplexing circuit, 65 a frame transmission circuit, 66 a frame synchronization circuit, 67 a terminal device address comparison circuit, 68
is a serial/parallel converter circuit, 69 is a receiving path, 7 is a memory, and 70 is a
is parallel-to-serial conversion circuit, 71#i transmitter, 7a memory, 7
2 is an attribute data storage circuit, 73-1.73-2.73-
n is a terminal II connection circuit, 74 is a control circuit, and 59 is a terminal attribute data area (hereinafter referred to as TID).

Explaining the SG configuration in Diagram 4, the difference from the conventional example in Diagram 2 is that TID591 is added. Therefore, in the terminal device on the calling side, data for identifying the attribute of the calling terminal is set in the TID 59 in the conventional SG contents, and the SG is transmitted. When the called IIO terminal device receives the sG, it sends CMD57. N
DA52. Checked CHA53 and found that there was a call to the terminal connected to the own end station equipment t-11111L, CH
Compare the attribute data of the called terminal in A53 and the attribute in TID59, and if they match, if the called terminal is in a connectable state, it is set as R8PB81 - connectable, and if they do not match, it is set as R8P5.
8 as unconnectable, and sends SGt to the originating terminal station type side in the same manner as in the conventional method. This improves line usage efficiency and network serviceability. Next, the circuit operation of the terminal station device will be explained with reference to FIG. The difference between this circuit and the conventional one is that it has an attribute data storage circuit 72 and a control circuit @74.
The II & SG attribute data of the calling terminal and the attribute data of the called terminal are compared, and if they do not match, an SG indicating that connection is not possible is sent to the other terminal station. This is the point at which it is sent to the device and returned to the device. When a call is made from the terminal, the terminal connection circuit example connected to the terminal is sent to 73-
1 notifies the control circuit 74 of this fact, and the control circuit 74 creates a connection request SGt addressed to the calling party. At this time, the attribute data of the calling terminal is obtained from the attribute data storage circuit 72 and the corresponding SG
superimposed on

The 90G generated by the control circuit 74 is transferred to the frame multiplexing circuit 64 as serial data in the parallel/serial conversion circuit 7o via the transmission buffer memory 71t-. The frame multiplexing circuit 64 selects the SG to the transmission line 60-1 via the frame transmitting circuit 65 in accordance with the timing signal from the 7-frame synchronizing circuit 66.

On the other hand, on the 9th side receiving the call, the frame receiving circuit 61 extracts clocks and rays from the received frame, and the 7-frame synchronization circuit 66 establishes synchronization of the clocks tstc and y-frames to the terminal station. Address comparison circuit 67.7 Frame separation circuit 63. A main signal for determining respective operation timings is supplied to the claim multiplexing circuit 64.

The 98G received from the transmission line 60-2 is transferred from the 7-rem reception circuit 61 to the Sokuganro 62, and is received by the Unganro circuit 62.
The terminal device address tNRn in G is output and transferred to the terminal device address comparison circuit 67, the terminal device address is compared with the own terminal device address, and a match/mismatch is notified to the frame separation circuit 63. In the frame separation circuit 63, if the address comparison result from the terminal device address comparison circuit 67 does not match, the result is transferred from the delay circuit 62 to the receiving 5G17 frame multiplexing circuit 64, and then sent to the 7 frame transmitting circuit 65. Transmission line 6
The data is sent to 0-1 and transferred to the next terminal device. If the address comparison result is -'r7, the received 8G' is separated and transferred to the serial/parallel converter 68, where it is converted into parallel data and stored in the receive buffer number memory 69. .

When 17 frames worth of data is accumulated in the reception buffer memory 69, the control circuit 74 reads and analyzes this data, and if the SG is a connection request for a terminal connected to its own node, attribute data (Storage circuit 72) Find the attribute data of the called terminal and compare it with the true data in the SG. If the two do not match, create an SG that indicates that connection is impossible, and send it to the connection request SG described above. A similar procedure is used to prevent a drop in usage efficiency of the sending line to the transmission line 60-1. The above explained the terminal equipment of the loop network, but 8
It can also be applied to terminal equipment connected to an exchange using G.

As described in detail above, according to the present invention, it is possible to prevent a W14 connection of a line due to a mismatch in the attributes of a calling/receiving terminal, thereby improving the efficiency of line use and serviceability.

[Brief explanation of the drawing]

Figure w&1 is a conceptual diagram of a communication network using a loop network as an example, Figure 2 is a configuration diagram of conventional example 08GO, Figure 3 is a block diagram of a terminal device according to an embodiment of the present invention, and Figure 4 is a diagram of the present invention.
It is a block diagram of 8G of s example. In the figure, 1-4 are terminal equipment, 5.60-1.60-2 are transmission lines, 11-13.21-23.31-33°57 is CM
D, 58aR8P, 59#-1TID, 61 is a 7 frame receiving circuit, 62 is a delay circuit, 63 is a frame separation circuit,
64 is a frame multiplexing circuit, 65 is a frame transmitting circuit, 6
6 is a frame synchronization circuit, 67 is a terminal device address comparison circuit, 68 is a serial/parallel conversion circuit, 69 is a reception buffer memory, 70 is a parallel/serial conversion circuit, 71 is a transmission buffer memory, and 72 is an attribute data storage circuit. , 73-1, 73-2, and 73-n are terminal connection circuits, and 74 is a control circuit. Procedural amendment (voluntary) Indication of the case 1982 Patent Application No. 149951 Relationship with the case Patent applicant address 1015 (522) Kamiko Illaka, Nakahara-ku, Yozaki City, Kanagawa Prefecture Name - Fujitsu Limited Contents of the amendment Page 3, line 12 of the specification: ``1 of different heterogeneous layers'' is amended to read ``of different heterogeneous layers''.

Claims (1)

[Claims] Terminal device Ks that connects various terminals in the communication network using Kugna Ring 7 Ray^ to disconnect the line? The terminal is equipped with a circuit that stores the attributes of the terminal, and when a line connection request is made, the attribute data of the calling terminal is superimposed, and 9 signals and 7 frames representing a connection request addressed to the other end station type side are sent out. The terminal device that receives the 7-frame signaling frame compares the attribute data of the called terminal with the attribute data in the scissor signaling frame, and if the attribute data is not scattered, it unconditionally determines that line connection is impossible. A line connection method in which the calling terminal sends back a transmission frame indicating the connection to the nine-end station type side.