JPH04298197A - Indoor exchange for ins - Google Patents

Abstract

PURPOSE:To avoid communication wait for a long time by registering connector information using an INS side communication terminal equipment and an indoor terminal equipment as a communication pair, referencing the registered information when a connection request comes so as to discriminate the acceptability of connection. CONSTITUTION:An INS use indoor exchange 13 is provided with an information designation device 132 setting and registering connector information 131 to designate a communication pair, and also provided with a channel monitor device 133 monitoring whether or not an idle communication channel is in existence for indoor terminal equipments a-c and a network terminator 12 and with a connection confirmation device 134 discriminating the acceptability of connection based on the connector information 131. Thus, even when a connection request comes from communication terminal equipments A-C or from indoor terminal equipments a-c, the connection confirming device discriminates the request. The physical connection channel for the INS communication terminal equipments A-C and the indoor terminal equipments a-c is partly occupied in this way to avoid communication wait between the terminal equipments for a long time and required and important communication is connected immediately.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor switching system for an INS (Advanced Information and Communication System).

0002

[Prior Art] Conventionally, in INS, up to eight terminals are connected to a network termination device and multiple indoor terminals (for example, telephones, facsimile machines, etc.) by bus connection without using an indoor switchboard. was. In this conventional method, in a network with a point-to-multipoint connection configuration, when a connection request is sent from a communication terminal on the network side of the INS to an indoor terminal, the network It will be connected to each terminal on the indoor side that is connected to the terminal device.

0003

[Problems to be Solved by the Invention] However, in such a conventional INS, if there is a terminal (slave computer) that needs to communicate with a specific communication device (host computer) among the indoor terminals, When all available lines are in use, there is a problem in that these terminals cannot connect or communicate with each other. In particular, long-term telephone calls or the like may result in long communication waiting times.

Furthermore, in the existing functions of the INS, it is not possible to allocate a communication channel to a specific device (communication terminal, indoor terminal) in advance and restrict the use of other terminal devices.

[0005] Therefore, the present invention provides a point-to-multipoint connection between an indoor terminal and an INS.
The purpose is to provide an indoor switching system for INS that monopolizes the physical connection channel with the side communication terminal and eliminates long communication wait times.

[0006]

[Means for Solving the Problems] The invention as set forth in claim 1 is an indoor switching system for an INS interposed between a network terminal device of an INS and a plurality of indoor terminals, in which a specific INS side communication terminal and one of the above-mentioned indoor terminals, and registration means for registering this as connection device information; The indoor exchange for INS includes a connection determining means for determining whether or not the connection is possible based on information.

[0007] According to a second aspect of the invention, the INS indoor exchange has a plurality of communication channels and allocates the communication channels to the communication pairs.

[0008] According to a third aspect of the invention, the INS indoor exchange has channel monitoring means for monitoring the plurality of communication channels, and the connection determining means refers to information from the channel monitoring means. This is an indoor switch for INS that determines whether connection is possible or not.

[0009]

[Function] In the indoor exchange for INS according to the present invention,
The INS side communication terminal and the indoor terminal are registered in advance as connected device information as a communication pair, and when a connection request is received from either side, this connection request is referred to as the connected device information and the connection is made. Determine whether or not it is possible. therefore,
Connection in this communication pair can be secured at all times,
It is possible to avoid long communication wait times. For example, a host computer and a slave computer can be designated as this communication pair.

0010

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram schematically showing the connection configuration of an indoor exchange for INS according to an embodiment of the present invention. FIG. 2 is a flowchart showing the processing procedure for a connection request in this indoor exchange for INS. FIG. 3 is a block diagram showing an example of connection device information according to an embodiment.

In FIG. 1, numeral 11 is an INS exchange, to which a plurality of communication terminals A, B, and C are connected. The network termination device 12 is connected to this INS exchange 11 via a digital line network. The network termination device 12 is connectable to a plurality of indoor terminals (telephone, facsimile, etc.) a, b, and c via an indoor exchange 13 for INS.

[0012] This INS indoor exchange 13 is, for example, a C
It is composed of a PU, ROM, RAM, I/O, etc., and has an information setting mechanism 132 that sets and registers connected device information 131 that specifies a communication pair. Also, INS
The indoor exchange 13 includes a channel monitoring mechanism 133 that monitors whether or not there is a free communication channel between the indoor terminals a, b, c, etc. and the network termination device 13, and the above-mentioned connection device information 1.
31, and a connection confirmation mechanism 134 that determines whether or not the connection mirror is available.

[0013] Therefore, the connection request is sent to the communication side terminals A and B.
, C, etc. via the network termination device 12, the connection confirmation mechanism 134 determines whether or not the connection is possible. The same applies to the cases from the indoor terminals a, b, and c.

The connected device information 131 is set in a data format as shown in FIG. 3, for example. That is, at the beginning is an INS identification code 1311 that specifies, for example, INS1200 or INS64, and next is the number 1312 of communication channels occupied and used for connection between these terminal devices, and also the number of communication channels 1312 that specify the communication terminal on the INS side, for example, A. The other party designation information 1313 to designate and the local designation information 1314 which designates the terminal a on the indoor side are further arranged.

Therefore, as shown in the flowchart (FIG. 2), when connection request information is input from the network termination device 12 or the indoor terminal, the INS indoor exchange 13 saves this connection request information and the storage device in advance. The information is compared with the registered connected device information 131 (step S1). The connection request information includes information specifying the sending side and the receiving side, and this information is compared with the other party specification information 1313 and the local side specification information 1314 of the above-mentioned connection device information 131 to determine whether the connection is possible or not. It is to judge.

[0016] Then, the connection request information is the connection device information 13.
If it is 1, connection processing is performed (S2). This is what the line is connected to. On the other hand, if it is not in the connected device information 131 (NO in S1), it is determined whether there is a connectable empty channel (S3). For example, if the subscriber line is INS64, there are two B channels that can be connected, and if one channel is already specified and used in the connection device information 131 as shown in FIG. Only one channel can be connected. Whether or not this one channel is in use is determined based on data from the channel monitoring mechanism 133.

[0017] If there is a connectable channel, the line is connected through connection processing (S2), and if there is no channel, a busy information return process (S4) is performed to notify the connection requesting communication terminal that connection is not possible. Notice. Note that if there are more communication channels, multiple communication pairs can be registered as connected device information.

[0018]

Effects of the Invention According to the present invention, in point-to-multipoint connection of INS, indoor terminal and INS
By monopolizing the physical connection channel with the side communication terminal, it is possible to eliminate long communication wait times between the terminals. Immediate communication is possible for important communications that require constant communication. For example, this is communication such as inquiries between a host computer and a slave computer. Furthermore, in this case, other terminals, INS exchanges, INS networks, etc. are not affected.

[Brief explanation of drawings]

FIG. 1 is a block diagram schematically showing the connection configuration of an INS indoor exchange according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a processing procedure for a connection request in an INS indoor exchange according to an embodiment of the present invention.

FIG. 3 is a block diagram showing an example of connection device information according to an embodiment of the present invention.

[Explanation of symbols]

12 Network termination device 13 INS indoor exchange 131 Connection device information 132 Information setting mechanism (registration means) 133 Channel monitoring mechanism 134 Connection confirmation mechanism (connection judgment means) A, B, C
INS side communication terminals a, b, c Indoor terminals

Claims (3)

[Claims] [Claim 1] An indoor exchange for INS interposed between an INS network termination device and a plurality of indoor terminals, wherein a communication terminal is connected between a specific INS communication terminal and one of the indoor terminals. A registration means that forms a communication pair and registers it as connected device information, and a connection judgment device that determines whether or not the connection is possible based on this connected device information when a connection request is received from an INS side communication terminal or an indoor terminal. An indoor exchange for INS characterized by having means. 2. The indoor exchange for INS according to claim 1, wherein the indoor exchange for INS has a plurality of communication channels, and the communication channels are assigned to the communication pairs. 3. The indoor exchange for INS has channel monitoring means for monitoring the plurality of communication channels, and the connection determining means determines whether connection is possible by referring to information from the channel monitoring means. I as described in Section 2
Indoor switch for NS.