JPH05316215A - Connecting route tracing method for communication network - Google Patents

Abstract

PURPOSE:To capture a connecting route which is actually used by a user, to speedily discover the cause of a fault such as an erroneous connection, etc., to attain a trace actuating from a transmission side node or an incoming call side node, and to apply the method to branching connection. CONSTITUTION:A node [N] receives the trace instruction control signal of a calling from a node [n-1], and transfers the trace instruction control signal to a node [N+1]. And also, the node [N] receives the trace collection signal and connection information MN+1 of the calling from the node [N+1], and transfers connection information MN obtained by adding its own equipment information XN to the connection information MN+1, and the trace collection information to the node [N-1]. When the node [N] is branch-connected, the node [N] transfers the trace instruction control signal to each node [N+1]K, receives the trace collection information and the connection information MN+1,K from each node [N+1]K, and transfers connection information XN obtained by adding its own equipment information XN to the connection information MN+1,K to the node [N-1].

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication network connection route tracing method applicable to a route search of communication in a network used for each user in a communication network and management of the route. Further, the present invention is
It is applied to a system that centrally measures and manages communication routes or paths that pass through nodes of distributed communication networks, distributed modules, or distributed circuits. The invention particularly relates to a method of tracing a connection route from a terminating node. The invention particularly relates to a method of tracing a connection route from a sending node.

[0002]

2. Description of the Related Art FIG. 18 is a diagram for explaining the system configuration and operation of a connection route tracing method for a conventional communication network.

Conventionally, as a method of tracing a communication route from a calling side, there is a method shown in FIG. FIG. 18 is a network including a plurality of nodes a, b, c, d, e, and f, in which the user A is accommodated by the node a and the user B is accommodated by the node f.
The following describes a communication route and a tracing method when a call is made from the user A to the user B in the case where the user accommodates.

The method shown in FIG. 18 is used, for example, when a mistaken contact occurs when a call is made from the user A to the user B, and the user or the like reports the wrong contact. A test terminal 7 simulating the user A is transmitted from a terminal of a node a (for example, a switchboard) accommodating a user who has a problem, and a connection route from the test terminal 7 to the user B is traced.

In this trace, for example, in a state where the test terminal 7 and the user B are connected, a maintenance command is input from the maintenance terminal of each node, and an incoming / outgoing line of a specific call is sequentially specified for each node. It is done by things.

However, there are generally a plurality of relay routes between the transit route from the source node accommodating the user A to the destination node accommodating the user B, and the route of the call originated from the test terminal 7 to the user B is present. , And the transit route actually used by the user at the time of mistaken contact did not always match.

[0007]

As described above, the conventional tracing method does not capture a connection route that may have a problem, so that a node in which a misconnection occurs or a misconnection actually occurs. There was a problem that the link between nodes could not be specified.

[0008] Partial software or hardware failures in a node can cause complex symptoms. If one node system is completely down, a failure can be easily detected, but in the case where communication is not possible when there is only a certain call, there is a case where a partial soft failure occurs in any node. In order to discover this, a test method that can follow the connection status in the communication network actually used by focusing on the call is required. As a failure search method in such a communication network, a transit route information method, a statistical processing method, and a monitor method have been conventionally proposed.
O. 7) A method of using the common line signaling system, adding information instructing collection of transit route information to this call control signal from a calling side node in a one-to-one connection, and a node receiving this information collecting and transmitting the information Is proposed.

In order to follow the spread of the billing service on the called side, tracing from the called side node is also important, but there is no realization example. On the other hand, there is no report on the connection route tracing method of the communication network in the complicated branch connection.

The present invention solves the above-mentioned problems, catches the connection route actually used by the user, and can promptly find the cause of a failure such as a wrong connection. It is an object of the present invention to provide a connection route tracing method for a communication network, which enables trace activation from a node and is applicable to branch connections.

[0011]

The first aspect of the present invention is to:
In a connection route tracing method of a communication network in which 3 or more natural number L nodes are connected in numerical order, each of the nodes stores equipment information of equipment used for call connection when connecting to a call. The first node [1] of the L nodes is provided with a trace instruction control signal, which is set in advance and indicates that the call is to be traced at either the time of calling or the time of receiving a call. Node [N] (N is 2 or more L-
A natural number less than or equal to 1) stores the connection information X _{N of the} call of its own node in the facility information storage means based on the trace instruction control signal from the node [N-1] of the previous stage, and stores it in the node [N + 1] of the subsequent stage. This trace control signal is transferred.

The last node [L] of the L nodes is the call stored in the equipment information storage means of each node based on the trace instruction control signal from the preceding node [L-1]. along with trace collection signals for collecting facility information X _{1 to L} transferred to the subsequent node equipment information X _L of the call of the own node as the connection information M _L [L-1], the middle node [N] is Based on the trace collection signal from the node [N + 1] in the previous stage, the connection information M _{N + 1} from the node [N + 1] in the previous stage is added with the facility information X _{N of the} call accumulated in the facility information accumulating means of the own node, and the connection information is added. It can be transferred to the subsequent node [N-1] as M _N together with the trace collection signal. However

[0013]

[Equation 1] In addition, the call is branched and connected to a natural number T, which is a natural number T, of the subsequent nodes [N + 1] _K (K = 1 to T) in the intermediate node [N], and the intermediate node [N] is the previous node. [N-
1] on the basis of the trace instruction control signal from [1], the equipment information X _{N of the} call is accumulated in the equipment information accumulating means of the own node, and the T succeeding nodes [N + 1] _K This trace instruction control signal can be transferred to.

Further, in the node [N] in the middle of the call, a natural number T of two or more preceding nodes [N + 1] _K (K =
1 to T), the node [N] on the way is connected to the connection information M _{N + 1, K} from the node [N + 1] _K in the preceding stage based on the trace collection signal from the node [N + 1] _K in the preceding stage. it can be transferred to the subsequent node [N-1] with the trace collection signal as connection information M _N added facility information X _N of the call stored in the nodes of the facility information storage means. However

[0015]

[Equation 2] A second aspect of the present invention is a connection route tracing method for a communication network, which comprises a subscriber node accommodating subscribers, a connection node, and an operation device for performing network management and communication route tracing instructions. Each node includes equipment information storage means for storing equipment information of equipment used for call connection at the time of connection for a call, and the operation device accommodates the user when tracing a communication path of an arbitrary user. The subscriber system node includes means for instructing a communication path trace to the subscriber system node, and the subscriber system node notifies the connection node of the preceding stage to the connection node when there is an incoming call to the user whose communication path trace is instructed by the operation device. The user is notified that the communication route is to be traced, and the equipment information of the own node is stored in the equipment information storage means. The connection node of the preceding stage sequentially notifies the connection node of the preceding stage that the user is a communication route tracing target, accumulates the equipment information of its own node in the equipment information storage means, and joins the destination user. Upon receiving the notification that the user is the communication path tracing target user, the inter-worker node transmits the equipment information of the own node for the call to the connection node of the subsequent stage, and the connection nodes of the latter stage are sequentially transmitted from the own node. It is characterized in that the equipment information received by the subsequent node and the equipment information accumulated in the own node are transmitted together.

A third aspect of the present invention is a method for tracing a connection route of a communication network, which includes a subscriber node accommodating a subscriber, a connection node, and an operation device for performing network management and a communication route tracing instruction. At
Each of the nodes includes equipment information storage means for storing equipment information of equipment used for call connection when connecting to a call,
The operation device comprises means for instructing a communication route trace to the subscriber node accommodating the user when tracing a communication route of an arbitrary user, and the subscriber node is When there is an incoming call to the user who is instructed to trace the communication route, the preceding connection node is notified that the user is the subject of the communication route trace, and the facility information of the own node stored in the facility information storage means is transmitted. , The connection node of the preceding stage sequentially notifies the connection node of the preceding stage that the user is a communication path tracing target, and receives the equipment information of the own node accumulated in the equipment information accumulating means and the connection node of the succeeding stage. The combined equipment information is transmitted to the connection node in the preceding stage, and the subscriber node accommodating the destination user is A feature is that the equipment information of its own node regarding the call for notifying that it is a user to be traced and the equipment information received from the connection node at the next stage are sent together to the subscriber node accommodating the destination user. And

The subscriber node accommodating the terminating user should transmit the collected facility information of all communication paths to the operation device when there is an instruction to read the trace information from the operation device. You can

A subscriber node accommodating the subscriber includes pattern signal generating means and pattern signal identifying means, each node includes pattern signal returning means, and each node is based on an instruction from the operation device. , It is possible to measure the transmission quality of the communication path by returning the pattern signal between arbitrary connection nodes in the communication path collected from the subscriber system node by the communication path trace.

Further, during communication between users of any subscriber node, the subscriber node that has received the trace instruction of the communication route from the operation device is a target of the trace of the communication route of the user to the preceding connection node. In addition to notifying that, the facility information storage means stores the facility information of its own node, and the preceding connection node sequentially notifies the preceding connection node that the user is a communication path trace target, and the equipment information storage means Facility information can be stored.

A fourth aspect of the present invention is a connection route tracing method for a communication network comprising a subscriber node accommodating subscribers, a connection node, and an operation device for performing network management and communication route tracing instructions. At
Each of the nodes includes equipment information storage means for storing equipment information of equipment used for call connection when connecting to a call,
The operation device comprises means for instructing a communication route trace to the subscriber node accommodating the user when tracing a communication route of an arbitrary user, and the subscriber node is When the user who is instructed to trace the communication path sends a call, the next connection node is notified that the user is the target of the communication path trace, and the equipment information of the own node is stored in the equipment information storage means. The connection node sequentially notifies the next connection node that the user is a communication route trace target, stores the equipment information of the own node in the equipment information storage means, and stores a destination user user node. Sends the equipment information about the call of the notification indicating that the user is the communication path tracing target to the connection node in the preceding stage of the own node. And the front of the connection node, and transmits the combined and accumulated sequentially facility information and the own node received from the preceding stage nodes its own node equipment information.

A fifth aspect of the present invention is a connection route tracing method for a communication network comprising a subscriber node accommodating subscribers, a connection node, and an operation device for performing network management and communication path tracing instructions. At
Each of the nodes includes equipment information storage means for storing equipment information of equipment used for call connection when connecting to a call,
The operation device comprises means for instructing a communication route trace to the subscriber node accommodating the user when tracing a communication route of an arbitrary user, and the subscriber node is When there is a call from the user who is instructed to trace the communication path, the next connection node is notified that the user is a communication path trace target, and the equipment information of the own node accumulated in the equipment information accumulating means is transmitted, The next connection node sequentially notifies the next connection node that the user is a communication path trace target, and the equipment information of the own node accumulated in the equipment information storage means and the equipment information from the preceding connection node. Is sent to the next connection node, and the subscriber node accommodating the destination user And transmits to the subscriber node accommodating the destination user by combining the equipment information received from the own node equipment information and the preceding stage of the connection node of the call over The a is that of notification.

When the call connection to the next connection node is impossible at any connection node, the call setup impossible information is accumulated in the own node and the equipment information of the own node is transmitted to the connection node at the preceding stage, The connecting node in the preceding stage can sequentially transmit the facility information received by the node preceding the own node and the facility information accumulated in the own node together.

Further, the subscriber node accommodating the originating user receives the instruction to read the trace information from the operation device for the collected facility information of all communication paths,
Alternatively, it can be periodically transmitted to the operation device.

The subscriber node accommodating the subscriber includes pattern signal generating means and pattern signal identifying means, each node includes pattern signal folding means, and each node is based on an instruction from the operation device. , It is possible to measure the transmission quality of the communication path by returning the pattern signal between arbitrary connection nodes in the communication path collected from the subscriber system node by the communication path trace.

Further, during communication between users of any subscriber node, the subscriber node which has received the trace instruction of the communication route from the operation device is the subject of the trace of the communication route of the user to the next connection node. In addition, the facility information storage means stores the facility information of its own node, and the next connection node sequentially notifies the next connection node that the user is a communication path trace target, and the facility information storage means. You can accumulate equipment information with.

[0026]

The node having a natural number L of 3 or more stores the equipment information of the equipment used for the call connection at the time of connection to the call by the equipment information storage means. The first node [1] of the L nodes sends a trace instruction control signal, which is set in advance and indicates that this call is a trace target, at the time of making a call or receiving a call, to the node [2] in the subsequent stage. ], The intermediate node [N] (N is a natural number of 2 or more and L-1 or less) is connected to the call connection information X of its own node based on the trace instruction control signal from the preceding node [N-1]. _N is stored in the facility information storage means and this trace control signal is transferred to the node [N + 1] at the subsequent stage.

The last node [L] of the L nodes is the equipment information X ₁ stored in the equipment information storage means of each node based on the trace instruction control signal from the preceding node [L-1]. with trace collection signals for collecting _~L transferred to the subsequent node equipment information X _L of the own node as the connection information M _L [L-1], the middle node [N] is
Based on the trace collection signal from the node [N + 1] in the previous stage, the connection information M _{N + 1} from the node [N + 1] in the previous stage is added with the facility information X _N accumulated in the facility information accumulating means of the own node to obtain the connection information M _N. It is transferred to the node [N-1] at the subsequent stage together with the trace collection signal.

Further, in the node [N] in the middle of the call, a natural number T of 2 or more and subsequent nodes [N + 1] _K (K = 1 to
The node [N] is branched and connected to T), and the intermediate node [N] creates T trace instruction control signals based on the trace instruction control signal from the node [N-1] of the preceding stage, and outputs the facility information X _N of its own node. The trace instruction control signal is stored in the facility information storage means and transferred to the T nodes [N + 1] _K in the subsequent stage.

In addition, according to the instruction to be traced from the operation device, the receiving side or the transmitting side can notify the trace target to obtain the route information.

Further, according to the instruction to be traced from the operation device, the equipment information of the own node can be transferred together with the notification to be traced from the receiving side or the transmitting side to obtain the route information.

As described above, the connection route actually used by the user can be captured, the cause of the failure such as misconnection can be quickly found, and the trace can be activated from the caller side node or the callee side node. It can also be applied to branch connections.

[0032]

Embodiment A method for tracing a connection route of a communication network An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram for explaining a connection route trace of a communication network according to the first embodiment of the present invention.

In FIG. 1, the communication network includes nodes to which nodes [1] to nodes [N-1], nodes [N], and nodes [N + 1] to [L] are connected in numerical order.

Here, the feature of the present invention is that each node is equipped with equipment information storage means for accumulating equipment information of equipment used for call connection at the time of connection for a call, and the first node [1] is , A trace instruction control signal indicating that the call is to be traced, which is preset at the time of making or receiving a call, is transferred to a node at a subsequent stage, and the node [N] in the middle is a node at a previous stage. Based on the trace instruction control signal from [N-1], the connection information X _{N of the} call of the own node
Is stored in the facility information storage means, and a node [N +
1] to transfer this trace control signal.

Further, the last node [L] is the own node along with trace collection signals for collecting facility information X _{1 to L} stored in the facility information storage means of each node based on the trace instruction control signal from the preceding node and transfer facility information X _L to the subsequent node as the connection information M _L, middle node [N], the connection information M from the preceding node [N + 1] on the basis of the trace collection signal from the preceding node [N + 1]
_{N +} facility information trace collection signals the stored equipment information X _N in the storage means as the addition connection information M _N of the node along with the ₁ can be transferred to the subsequent node [N-1].

FIG. 2 is a diagram for explaining the case of branch connection in the connection route tracing method of the first embodiment of the present invention.

In FIG. 2, in the node [N] in the middle of the call, a natural number T of 2 or more and subsequent nodes [N + 1] _K (K
= 1 to T), the node [N] in the middle creates T trace instruction control signals based on the trace instruction control signal from the node [N-1] of the previous stage,
The equipment information X _N is stored in the equipment information storage means of the own node,
The trace instruction control signal can be transferred to the T nodes [N + 1] _K in the subsequent stage.

Furthermore, in the node [N] in the middle of the call, a natural number T of 2 or more preceding nodes [N + 1] _K (K = 1 to
T), the node [N] in the middle is connected.
The preceding node based on the trace collection signals from the preceding node [N + 1] _K [N + 1] connection information from the _K M
Together with _{N + 1,} the trace collection signal the stored equipment information X _N in facility information storage means of the node as the added connection information M _N to _K can be transferred to the subsequent node [N-1].

The operation of the connection route tracing method of the communication network according to this embodiment will be described below.

FIG. 3 is a diagram showing a control flow of the node [N] when the trace instruction control signal of the connection route tracing method of the communication network according to the first embodiment of the present invention is received. The part surrounded by the broken line in FIG. 3 is the control required for the call setting stage trace and is skipped for the trace of the call during communication. Figure 4
FIG. 6 is a diagram showing a control flow of a node [N] when a trace collection signal of the connection route tracing method of the first embodiment communication network of the present invention is received.

In the node for branch connection, the nodes shown in FIGS.
It is realized according to the control flow shown in.

Consider the case where the trace instruction control signal and the trace collection signal are applied to the existing signal system. It is necessary to make the trace instruction control signal and the trace collection signal synergistic with which signal in the signal system or to newly define as a signal for maintenance test. As shown in the conventional implementation example, the NO. The case where the trace instruction control signal and the trace collection signal are basically applied to the ISDN user unit (ISUP) of the 7 common line signaling system is shown.

FIG. 5 shows a trace instruction control signal, a trace collection signal, a NO. It is a figure which shows the relationship with a 7 common line signal system. In FIG. 5, ANM is a response signal, DT is a branch connection node, IAM is a call setup request signal, N1 to N9 are newly defined necessary signals, ON is a source node, T is a relay node, and TN is a destination node, Indicates a trace instruction control signal and indicates a trace acquisition signal. FIG. 5 is organized by focusing on the direction of trace activation and the state of calls. In the one-to-one connection, when tracing the connection information from the calling side node at the call setting stage, each node has the control function according to claims 1 and 2 (Fig. 1), and the trace instruction control signal is used for the call setting. On request signal (IAM), trace collection signal can be realized by defining on response signal (ANM). On the other hand, when tracing is performed from the destination node, it is when the call setup signal arrives at the destination node that a call can be identified to be traced. Therefore, the trace instruction control signal is realized by newly defining the response signal, and the trace collection signal is newly defined as the maintenance test signal (denoted by N1 in FIG. 5) as shown in FIG. Next, when the call is in communication, it is necessary to newly define both the trace instruction control signal and the trace collection signal as maintenance test signals (denoted by N2 and N3 in FIG. 5). For example, when applying the TMN command system for which new international standardization is being actively promoted for maintenance, the former is the M-GET request.
st (trace), the latter is M-GET response
By newly defining the control function of claim 1 as e (trace data), the traced connection information can be obtained.

The above has described the case where the tracing is normally performed. However, in the case where the connection with the subsequent node is not possible due to the relay line block or the traffic concentration due to the shortage of the outgoing line in the relay node, etc. The trace is stopped on the way and post-processing is performed. For example, when tracing from the originating node, the trace collection signal is
The call release request signal (REL) of the UP is defined, and the reason why the block is generated in the middle is combined with the connection information together with the REL to be transferred to the calling side.

As shown in FIG. 5, in order to trace the connection information of each node of the branch connection, it is realized by providing the control function of claims 3 and 4 to the node which has the branch connection as described above. To do. When tracing is performed at the call setup stage from the caller node, the trace instruction control signal is defined on the call setup request signal (IAM), and as in the case of the one-to-one connection, the main components such as voices and images from a plurality of users. The information is combined and transferred to a branch connection node that branches. Here, a plurality of trace instruction control signals are newly created, transferred together with this setting signal to a plurality of destination nodes at the branch destination, and a response signal (ANM) transmitted from the plurality of destination nodes to the branch connection node. The trace collection signal is defined above, the connection information is defined, the connection information is synthesized, and the trace is realized by transferring to the originating node.

When tracing is performed from one of the plurality of destination nodes at the time of setting, the trace instruction control signal is defined on the response signal and the response signal is transferred to the branch connection node. So if we identify that this call is a branch connection,
A trace instruction control signal, which is newly defined as N4 for each branch destination, is transmitted to the originating node, and a trace collection signal (N5) is branched and connected from each branch destination node that receives the trace instruction control signal. It is realized by transmitting to the node, synthesizing these connection information by the control function at the branch connection node, and transferring by the trace collection signal (N5) to the receiving side node which issued the trace instruction control signal.

Next, when the call is traced during the conference communication or the broadcast communication, as shown in FIG. 5, the trace instruction control signals (N6, N8) and the trace collection signal (N
7, N9) can be more easily estimated from the above by newly defining and realizing.

Although the case where there is one branch connection node has been described above, it can be easily inferred that the same control function can be basically applied even if there are a plurality of branch connection nodes.

The trace measurement time in branch connection is 1
It is possible to trace with a value that is almost close to the trace measurement time of the connection to one. This is because the trace instruction control and the trace collection control of a plurality of transit nodes after the branch can be controlled in parallel, and the branch connection node adopts a method of synchronizing the parallel control. For example, TN ₁ Tracing a call in a communication from the calling side at the N6, ..., TN _T
When the trace instruction control signal is received,
The trace collection signals (N7) from ₁ , ..., TN _T are independently transferred in parallel to the branch node DT. After these signals are combined by the DT, they are transferred to the originating node. In the other cases of FIG. 5 as well, the processing is performed in parallel.

When the number of transit nodes is 6 in a standard communication network, the time required for processing the trace instruction control signal and the trace collection signal per node is 250 m each.
s, assuming that the processing time of the branch connection node is several seconds, 1
It can be estimated to be about 3 to 5 seconds in the one-to-one connection and the branch connection, which is a realistic value.

FIG. 6 is a diagram for explaining a method of tracing a connection route from the called side according to the second embodiment of the present invention. The network of this embodiment includes a plurality of nodes a to f (exchanges), a plurality of links connecting the nodes, and a communication network 5 used for maintenance and operation. Each of the nodes a to f is connected via a communication network 5 to an operation device 6 that manages the operation of this network. Here, the communication network 5 may be a dedicated line network or a public line network. In this embodiment, the nodes a and f are subscriber nodes that directly accommodate users, and the other nodes b to e are relay connection nodes.

The feature of this embodiment is that the nodes a to f are equipped with equipment information storage means for storing equipment information of equipment used for call connection when connecting to a call, and the operation device 6 is , A subscriber node f accommodating a user when tracing the communication path of the user
To the user node B instructed to trace the communication route from the operation device 6, the subscriber node f receives the user B from the connection node e at the preceding stage. In addition to notifying that the communication route is to be traced, the facility information storage means stores the facility information of its own node, and the connection nodes e and c at the preceding stage are sequentially subject to communication trace by the user B to the connection nodes at the preceding stage. In addition to notifying that there is a notification, the facility information storage means stores the facility information of its own node, and the subscriber node a that accommodates the destination user A is notified that the user is a communication route trace target user. The equipment information of the own node regarding the call is transmitted to the connection node c at the subsequent stage, and the connection nodes c and e at the subsequent stage sequentially receive the equipment information and the own information received by the nodes at the subsequent stage from the own node. There is to be transmitted together with the equipment information stored in the de.

The equipment information of each node may be sequentially collected from the node f via the node at the previous stage together with the notification that it is a trace target.

The operation of the connection route tracing method from the called side according to this embodiment will be described below with reference to FIG.

Here, the user A housed in the subscriber node a makes a call and the relay nodes b to e in the network are sent.
The operation will be described by taking as an example the case where the communication route from the node a to the node f is traced when the call arrives at the user B accommodated in the subscriber node f via the.

In FIG. 6, dotted lines are user A and user B.
It shows a communication path through which communication information between them passes.

The node f accommodating the user B is informed in advance via the communication network 5 from the operation device 6 that the user B is the target call for tracing the communication route in the network. However, this notification can also be sent from a maintenance terminal such as a workstation directly connected to the subscriber node f.

First, when an incoming call arrives at the user B, the subscriber node f identifies that the user B is a trace target call based on the information notified in advance from the operation device 6. This identification method can be easily realized, for example, by storing user information indicating whether or not the call is a trace target call for each user in the node. User B
The node f that has identified that the call is a trace target call performs an incoming call process to the node e at the preceding stage, returns a response signal when the user B goes off-hook, and notifies the user B that the call is a trace target call. In addition, the node f performs a process of accumulating the equipment information in the node used in the incoming call process. Here, the equipment information is, for example, equipment numbers necessary for specifying the route, such as link numbers input and output by each node.

Thereafter, after the node e, the communication route to the user A is set by the incoming call connection processing similar to the conventional one. The node e returns a response signal to the node c, and the node c returns a response signal to the node a. When the nodes a, c, and e through which the call of the user A passes are identified that the call to the user B is a call to be traced, each node stores the same facility information as the node f.

Further, the identification of the call to the user B at the nodes c, e, and a as the call to be traced is the call setting requesting the trace by the response signal by the incoming process from the node f. It is done by notifying that.

Since node a accommodates user A,
When the node a identifies that it is the terminal node of the trace target call, the node a transmits the equipment information accumulated in the node a to the node c in the subsequent stage. In the node c, the node a is added to the facility information for the traced call that has already been accumulated.
And sends the equipment information from the node e to the node e. The node e also transmits the facility information to the node f by the same operation.
In the node f, the facility information received from the node e is added to the already-stored facility information of the node f to store the facility information. This collection route is shown by the broken line in FIG.

In the node f, the facility information is transmitted to the operation device 6 when the trace information reading instruction from the operation device 6 or the trace collection signal arrives, or the facility information is periodically transmitted to the operation device 6. By the above operation, for example, the operation device 6
The maintenance person or the like can know the information of the communication route from the user A to the user B.

Next, referring to FIG. 6, when the node f has not been notified in advance from the operation device 6 that the call is a trace target call, the trace of the call being communicated from the node a accommodating the user A who is communicating. The operation in the case of performing will be described.

When the node f has not been notified in advance that the call is a trace target call, and some problem such as noise mixing during communication between the user A and the user B occurs,
In some cases, the communication path trace may be performed from the operation device 6. In this case, the maintenance person of the operation device 6 instructs the node f accommodating the user B in communication to trace the call to the user B. The node f stores the facility information and notifies the node e, which is the relay node of the previous stage, that the trace call is a trace call. Similarly, the nodes e, c, and a perform similar processing.

There are two methods of collecting trace information in this case. One method is to notify the trace collection start signal by a response signal to the node a via the nodes e and c as already described in the operation of the embodiment of the tracing method from the called side, and already accumulated in each node. This is a method of collecting facility information while mounting the facility information accumulated by the nodes c, e, and f in the data area for accumulating the route information of the trace collection signal from the node a, and notifying the operation device 6 of the collected information. .. Another method is to provide an area for storing the data of the command in the process of notifying the nodes f, e, c, and a that the call is a trace target call, and sequentially accumulate the information accumulated in each node. When the information arrives at the node a, the information is transmitted by transmitting the trace information from the node a to the node f via the passage route or separately from the node a, and the node f notifies the operation device 6 of the trace information.

Next, FIG. 7 shows an example of the configuration of a subscriber node and a relay node required for implementing this embodiment.

In FIG. 7, 10 is a subscriber system node (node a in FIG. 6) accommodating the outgoing user A, 20 is a relay system node (nodes b to e), and 30 is a subscriber system accommodating the incoming user B. It is an example of composition of a node (node f).

The subscriber system node 10 monitors the origination and termination of the subscriber's call and terminates the subscriber's electrical termination (including optical subscriber termination) 108, speech path device 101, subscriber. The signal processing device 102, the control device 103,
Multiplexing in which the call signal from the relay signal processing device 104 and the signal from the relay signal processing device 104 are multiplexed and transmitted to the relay transmission line, and the signal from the relay transmission line is separated into the communication channel device 101 and the relay signal processing device 104. It is composed of a separation device 105, a pattern signal transmission / reception device 106 having a pattern signal generation / pattern signal identification and pattern signal folding function.

The relay node 20 also includes the communication path device 201,
The call signal from the control device 203, the relay signal processing device 204, and the communication channel device 201 is multiplexed with the signal from the relay signal processing device 204 and transmitted to the relay transmission line, and the signal from the relay transmission line is transmitted to the communication channel device 201. Demultiplexing devices 205, 215 for demultiplexing into the relay signal processing device 204,
Pattern signal transmitting / receiving apparatus 20 having pattern signal generation, pattern signal identification, and pattern signal folding function
It is composed of 6.

The subscriber system node 30 monitors the origination and termination of the subscriber's call and terminates the subscriber's electrical termination (including the subscriber's termination by light), the speech path device 301, the subscriber. The signal processing device 302, the control device 303,
The relay signal processing device 304, the call signal from the call path device and the signal from the relay signal processing device 304 are multiplexed and transmitted to the relay transmission line, and the signal from the relay transmission line is processed by the call path device 301 and the relay signal processing device 304. Demultiplexer 305 for demultiplexing, pattern signal generation and pattern signal identification, pattern signal transmitter / receiver 306 having pattern signal folding function, trace start / stop / interruption control signal from operation device and designation of trace target user , An operation interface device 307 for transmitting and receiving signals such as cancellation.

The operation of the configuration shown in FIG. 7 will be described with reference to the control flowcharts of FIGS. 8 and 9.

FIG. 8 shows an example of a control flow when a call to be traced is received at the subscriber node.

Subscriber node f accommodating the incoming user B
Then, when the termination device 308 detects the incoming call of the user B, the control device 303 identifies whether or not the call is a trace target call (S
81, S82). In the case of a call to be traced, the control device 303 processes a call response signal, and equipment information in the relay node, specifically, a node identification number, equipment information in the node, for example, a unit number to be used And information such as a communication path and a signal device, and further information such as a transmission link number input and output by the call to be traced, date and time when the trace is executed, and time (S83, S84). Including in the response signal that the call is a trace target call, the relay signal processing device 304 transmits the response signal to the previous node e (S8).
3). The same applies when the processing order is changed.

FIG. 9 shows a function of collecting the trace information of the passage route from the node a accommodating the user A, and relaying the trace collection signal to the node f in the route (broken line in FIG. 6) for collecting the trace information. It shows a control flow in the relay system nodes c and e having a function. When the signal summarizing the trace results is received, the information is temporarily stored (S91, S92), the equipment information in the node of the trace target call is read (S93), added to the stored information, and the next It is transmitted to the node as a trace collection signal together with the accumulated information of the relay nodes that have passed up to that point (S94, S95).

A method of capturing the transit route used by the user A in the network in the above embodiment and measuring the transmission quality using the route will be described.

As a method of measuring the transmission quality, a method of measuring the route while the user is disconnected in the network even after the user disconnects, and a method of measuring the transmission quality after the user disconnects are used in the operation device. There is also a method of reporting the communication path, re-setting the communication path used by the user again to the node a accommodating the calling user based on the result, and measuring the transmission quality of the path.

Each node is provided with a pattern signal transmission / reception device having a pattern signal generation, pattern signal identification, and pattern signal folding function.

At the time of measuring the transmission quality, node f and node c
An example of measurement in the section will be described. At the time of measurement, node c
In the pattern signal transmitting / receiving apparatus, the measurement is performed by using the return signal in the return measurement mode X, and by using the pattern signal identification function in the mode Y in which the node f transmits the pattern signal and the node c performs the pattern signal identification. At the time of this measurement, it is assumed that a negotiation procedure such as passing a pattern signal from the node f to the node e, and specifying the mode X or the mode Y at the node c is set in advance before the measurement. In the case of mode X, the transmission quality measurement determination is made by the node f, in the case of mode Y the determination is made by the node c, and when it is made by the node c, it is reported to the node f,
The node f reports to the operation device 6. Here, an example of the method of measuring the transmission quality is shown, but since the pattern signal transmitting / receiving device is provided in every node, the transmission quality can be measured anywhere in the passage route.

Specific measurement is performed by the instruction of the control device,
Also, the transmission of the pattern signal is performed via the communication path device.

FIG. 10 shows the format of information transferred by each node. Each node is numbered and the node 1
To a node N, and a data area is provided in which information such as the reason for a non-contact, etc. can be stored.

FIG. 11 shows the N used in ISDN.
o. An example realized using ISUP (ISDN user part) of 7 signal format will be shown. When there are three nodes a, b, and c and the user B receives the call, the node c sends back an ANM message as a response signal to the relay node b in advance, but if the user B identifies the call as a trace target call, , A message indicating that the call is to be traced is displayed in the ISUPS information parameter field in the ANM message to the node b, and the passage data is instructed to be set, and the node A is also displayed in the ANM message and transmitted. The trace collection signal is transmitted from the node a to the node b, and at this time, the equipment information of the node a is transmitted to the node b.
From the node b, the equipment information of the nodes a and b is added to the node c, and the information is transmitted and returned. The node c adds the information of its own node c to this information and stores it in the node c.
When there is a read instruction command from the operation system, it is returned as trace information about user B. The operating system uses this to match the user's complaint and to help analyze the problem.

FIG. 11 shows an example in which the ISUP signal is transmitted and received between the nodes for easy understanding, but the common line may actually be composed of a non-corresponding network that does not depend on the connection of the nodes. , The signal is transmitted and received via the signal relay station (STP) 8, so that the actual signal flow is such that the ISUP signal is transmitted and received along the broken line in FIG. In addition, when the common line is configured by the corresponding network, FIG.
The signal flows like. In any case, the present invention can be implemented.

Although the above embodiment has been described assuming a switch as a node, it can be applied to a system such as a LAN (local area network) or a MAN (metropolitan network). In that case, the nodes correspond to workstations and access nodes, and the links correspond to cables such as Ethernet cables, optical cables, and electrical cables.
The present invention can be applied to such an example.

FIG. 13 is a diagram for explaining a connection route tracing method from the transmission side of the connection route tracing method of the communication network according to the third embodiment of the present invention. The network of this example is
It is composed of a plurality of nodes a to f (switches), a plurality of links connecting the nodes, and a communication network 5 used for maintenance and operation. Each of the nodes a to f is an operation device 6 that manages the operation of this network via the communication network 5.
Connected to. Here, the communication network 5 may be a dedicated line network or a public line network. In this embodiment, nodes a and f
Is a subscriber node that directly accommodates users, and the other nodes b to e are relay connection nodes.

The feature of this embodiment is that the nodes a to f are equipped with equipment information storage means for storing equipment information of equipment used for call connection when connecting to a call, and the operation device 6 is , A subscriber node a accommodating a user when tracing the communication path of the user
Is provided with a means for instructing a communication route trace to the subscriber node a, and when the user A instructed to trace the communication route from the operation device 6 makes a call, the user A transmits the communication route to the next connection node c. While notifying that it is a trace target and accumulating the equipment information of its own node in the equipment information accumulating means, the connection nodes c and e sequentially inform the next connection node that the user A is a communication path tracing object. In addition to the notification, the facility information storage means stores the facility information of its own node, and the subscriber node f accommodating the destination user stores the facility information about the call of the notification indicating that the user is a communication route tracing target. The connection information is transmitted to the connection node e on the upstream side of the node, and the connection nodes e and c on the upstream side sequentially receive the equipment information received by the node on the upstream side of the own node and the equipment information accumulated on the own node. There is to be transmitted together.

The facility information of each node may be collected sequentially from the node a to the node f together with the notification of the trace target.

The operation of the communication path tracing method from the transmitting side according to this embodiment will be described below with reference to FIG.

Here, the user A housed in the subscriber node a makes a call and the relay nodes b to e in the network are sent.
The operation will be described by taking as an example the case where the communication route from the node a to the node f is traced when the call arrives at the user B accommodated in the subscriber node f via the.

In FIG. 13, the dotted line indicates the communication path through which the communication information between user A and user B passes.

The node a accommodating the user A is notified in advance via the communication network 5 from the operation device 6 that the user A is a target call for tracing the communication path in the network. However, this notification can also be sent from a maintenance terminal such as a workstation directly connected to the subscriber node a.

First, when the user A makes a call, the subscriber node a identifies that the user A is a trace target call based on the information notified from the operation device 6 in advance. This identification method can be easily realized, for example, by storing user information indicating whether or not the call is a trace target call for each user in the node. User A
The node a, which has identified that the call is a trace target call, performs connection processing to the next node c and notifies that the user A is a trace target call. In addition, the node a stores the facility information in the node used in the connection process. Here, the equipment information is, for example, equipment numbers necessary for specifying the route, such as link numbers input and output by each node.

Thereafter, after the node c, the communication path to the user B is set by the call relay connection processing similar to the conventional one. The node c selects the route from the empty route to the node e in the same process as the node a, and the node e also selects the node f accommodating the user B from the empty route to determine the route. Nodes a, c, through which the call of user A passes
In e and f, when it is identified that the call of the user A is a call to be traced, each node stores the facility information similar to the node a.

Here, the identification that the call of the user A at the nodes c, e, f is the call to be traced is notified that the call setting requested by the node a is the call setting requesting tracing. It is done by doing. It is also performed by sending out a trace request signal requesting a trace in accordance with the call setting.

The passing route of each node changes for each call depending on the congestion of the outgoing links of each node. Since the node f accommodates the user B, when the node f identifies that it is the end node of the trace target call, the node f transmits the equipment information accumulated in the node f to the node e at the previous stage. The node e adds the equipment information from the node f to the equipment information for the traced call that has already been stored, and transmits the equipment information to the node c. The node c also transmits the equipment information to the node a by the same operation. In the node a, the equipment information received from the nodes c and after is added to the equipment information of the node a already accumulated and accumulated. This collection route is shown by the chain double-dashed line in FIG.

At the node a, the facility information is transmitted to the operation device 6 when the trace information read instruction from the operation device 6 or the trace collection signal arrives, or the facility information is periodically transmitted to the operation device 6. By the above operation, for example, the operation device 6
The maintenance person or the like can know the information of the communication route from the user A to the user B.

Next, referring to FIG. 13, node a is set in advance.
In the case where the operation device 6 has not notified that the call is a trace target call, the operation for tracing the call being communicated from the node a accommodating the user A who is communicating will be described.

When the node a has not been notified in advance that the call is a trace target call and some problem such as noise mixing during communication between the user A and the user B occurs,
In some cases, the communication path trace may be performed from the operation device 6. In this case, the maintenance person of the operation device 6 instructs the trace of the call of the user A to the node a accommodating the user A who is in communication. The node a stores the facility information and notifies the node c, which is the next relay node, of the trace call. Similarly, the nodes c, e, and f perform similar processing.

There are two methods for collecting trace information in this case. One method is to notify the trace collection start signal from the node to the node f via the nodes c and e and trace the facility information already accumulated in each node from the node f, as described in the operation of the above embodiment. Nodes e, c, and a are stored in the data area that stores the via information of the collected signals.
Is a method of collecting the accumulated facility information while notifying the operation device 6 of the collected information. Another method is that the node a,
In the process of notifying c, e, and f, an area for storing data is provided in the command, the information accumulated in each node is sequentially accumulated, and when the information arrives at the node f, the trace information is transmitted from the node f to the node a. Via the transit route to node f
The information is transmitted by transmitting the trace information from the node a to notify the operation device 6 of the trace information.

Next, FIG. 14 shows an example of the configuration of a subscriber node and a relay node necessary for implementing this embodiment.

In FIG. 14, 10 is a subscriber system node (node a in FIG. 1) accommodating the outgoing user A, 20 is a relay system node (nodes b to e), and 30 is a subscriber system accommodating the incoming user B. It is an example of composition of a node (node f).

The subscriber system node 10 monitors the origination and termination of the subscriber's call and terminates the subscriber's electrical termination (including subscriber termination by light), the communication path device 101, the subscriber. The signal processing device 102, the control device 103,
Multiplexing in which the call signal from the relay signal processing device 104 and the signal from the relay signal processing device 104 are multiplexed and transmitted to the relay transmission line, and the signal from the relay transmission line is separated into the communication channel device 101 and the relay signal processing device 104. A separation device 105, a pattern signal generation / pattern signal identification, and a pattern signal transmission / reception device 106 having a pattern signal folding function,
An operation interface device 107 for transmitting and receiving a control signal for starting, stopping, and suspending the trace from the operation device and a signal for designating and canceling the trace target user.
It consists of

The relay node 20 also includes the communication path device 201,
The call signal from the control device 203, the relay signal processing device 204, and the communication channel device 201 is multiplexed with the signal from the relay signal processing device 204 and transmitted to the relay transmission line, and the signal from the relay transmission line is transmitted to the communication channel device 201. Demultiplexing devices 205, 215 for demultiplexing into the relay signal processing device 204,
It is composed of a pattern signal transmitting / receiving device having a pattern signal generation, pattern signal identification, and pattern signal folding function.

The subscriber system node 30 monitors the origination and termination of the subscriber's call and terminates the subscriber's electrical termination (including the subscriber's termination by light), the speech path device 301, the subscriber. The signal processing device 302, the control device 303,
The relay signal processing device 304, the call signal from the call path device and the signal from the relay signal processing device 304 are multiplexed and transmitted to the relay transmission line, and the signal from the relay transmission line is processed by the call path device 301 and the relay signal processing device 304. A demultiplexing device 305 for demultiplexing, a pattern signal transmitting / receiving device having a pattern signal generation / pattern signal identification and pattern signal folding function.

FIG. 15 shows the operation of the configuration shown in FIG.
16 and a control flowchart is shown in FIG.

FIG. 15 shows an example of a control flow at the time of connecting a call to be traced at the subscriber node and the relay node.

In the call origination process in the subscriber node, when the terminating device 108 detects a call, the subscriber signal processing device 102 receives the subscriber line signal, and the control device 103 discriminates whether or not the call is a trace call. (S151). If the call is a trace target call, a call connection process is performed, and a connection process in the own node and a connection process to the next node are performed (S15).
2, S153). When the connection processing is normally performed, the equipment information in the process of the connection processing, specifically, the identification number of the node, the equipment information in the node, for example, the unit number to be used, the communication path, and the signaling device. And the like, and further, information such as the transmission link number input and output by the trace target call, the date and time when the trace is executed, and the time (S15).
4).

When the connection processing is not normally completed, that is, when the bit of the link on the output side of this node or the connection from the next node is impossible (occurs at the time of traffic concentration to the next node or system abnormality) The information such as the transmission link number input at the self node and the reason why the connection is impossible are accumulated (S155 to 157). In the case of normal processing, the relay signal processing device 104 is further transmitted to the next node.
A call origination process is performed to perform a call setting process via the, and if the call is a trace target call, it is simultaneously notified that the call is a trace target call. With respect to this control flow, description will be omitted because the relay node 20 performs the same processing.

In the subscriber system node 30, by replacing the connection process with the next node with the incoming call process of the user B, the process when the communication is blocked is replaced with the incoming call process of the user B busy. The same control flow can be applied. The same applies when the processing order is changed.

FIG. 16 is a route for collecting trace information of a passage route from the node f accommodating the user B and transferring the trace collection signal to the node a (two-dot chain line in FIG. 13).
3 shows a control flow in the relay system nodes c and e having the information collecting function and the relay function.

According to the procedure shown in FIG. 15, the call from the user A arrives at the user B through the communication network, and the response information from the node f accommodating the user B is controlled in the process of the call origination process of FIG. The equipment information in the own node, which is temporarily stored in the storage unit in the device, is read (S15
3), the equipment information sent from the previous node and the equipment information of the own node are combined and transmitted together with a response signal to the next node (S155). Here, the case where this collection process is performed at the same time as the response information from the previous node, that is, the example in which the equipment information is collected in the calling and response sequence has been described. Alternatively, the information collection order can be sent from the node f and collected.

A method for capturing the transit route used by the user A in the network in the above embodiment and measuring the transmission quality by utilizing the route will be described.

As a method of measuring the transmission quality, a method of measuring the route while the user is disconnected in the network even after the user disconnects, and a method of measuring the route while the user disconnects are used for the operation device. There is also a method of reporting the communication path, re-setting the communication path used by the user again to the node a accommodating the calling user based on the result, and measuring the transmission quality of the path.

Each node is provided with a pattern signal transmitting / receiving device having a pattern signal generation, pattern signal identification, and pattern signal folding function.

At the time of measuring the transmission quality, node a and node e
An example of measurement in the section will be described. Node e during measurement
In the pattern signal transmission / reception apparatus, the measurement is performed using the loopback function in the mode X for performing the loopback measurement, and using the pattern signal identification function in the mode Y in which the node a transmits the pattern signal and the node e identifies the pattern signal. In this measurement, it is assumed that a negotiation procedure such as passing a pattern signal from node a to node c and designation of mode X or mode Y in node e has been set in advance before the measurement. In mode X, the transmission quality measurement determination is performed by the node a, in mode Y, the determination is performed by the node e, and when it is performed by the node e, the node a is reported, and the node a reports to the operation device 6. Here, an example of the method of measuring the transmission quality is shown, but since the pattern signal transmitting / receiving device is provided in every node, the transmission quality can be measured anywhere in the passage route.

The specific measurement is performed by the instruction of the control device,
Also, the transmission of the pattern signal is performed via the communication path device.

FIG. 10 shows the format of information transferred by each node as in the case of the second embodiment. Numbers are assigned to each node to indicate equipment information from node 1 to node N, non-contact, etc. In the event of a failure, a data area that can store information such as the reason is secured.

FIG. 17 shows N used in ISDN.
o. An example realized using ISUP (ISDN user part) of 7 signal format will be shown. When the user A makes a call with three nodes a, b, and c and the user A identifies that the call is a trace target call based on the information stored in the node a in advance, the call setup for the node b is performed. At the stage, the IAM message of the call setting indicates that the call is a trace target call.
It is displayed in the information parameter field of the SUP signal to instruct the setting of passage data. Further, the node b also displays the IAM message for the node c as well. Node c
From the ANM message which is a response signal, the above-mentioned passing data is returned to node b for node c, and the combined data for passing nodes b and c is returned to node a. The node a adds the information of its own node a to this information and stores it in the node a. When there is a read instruction command from the operation system, it is returned as trace information about user A. In the operating system,
This is used to match the user's complaint and to help in problem analysis.

The above example is an example of the case where the process is normally completed. However, in the middle of the call setting, the call setting may not be completed due to a line shortage or the like at any node. In some cases, it may be abandoned during the call setup stage.
In such a case, the data up to the transit node and a reason such as incomplete or midway abandonment are returned by an ISUP REL disconnection message or the like and returned in the same manner as a normal call, and are accumulated in the node a.

FIG. 17 shows an example of transmitting and receiving an ISUP signal between nodes for easy understanding. However, the common line may actually be formed of a non-corresponding network that does not depend on the connection of the nodes. , The signal flow is performed via the signal relay station (STP) 8. Therefore, as in the second embodiment, the actual signal flow is ISUP along the broken line in FIG.
Is sent and received. Further, when the common line is formed by the corresponding network, signals flow as shown in FIG. In any case, the present invention can be implemented.

Although the above embodiment has been described assuming a switch as a node, it can be applied to a system such as LAN (local area network) or MAN (metropolitan network). In that case, the nodes correspond to workstations and access nodes, and the links correspond to cables such as Ethernet cables, optical cables, and electrical cables.
The present invention can be applied to such an example.

[0122]

As described above, according to the present invention, the trace activation can be performed without depending on the direction of the trace activation from the source node or the destination node and the call state at the time of call setup or during communication. There is an excellent effect that not only one-to-one connection but also branch connection can be performed. In addition, the user, who has not been able to realize it, can accurately grasp the detailed information of the node actually passing through the network. With the frequent addition of functions to the exchanges and the increasingly complex networks, the probability of misconfiguration of the translators of the exchanges is high, and it is extremely difficult to find this, so it is very difficult for users to find it. By grasping the route through which a call actually passes, such a setting error can be found quickly. In particular, if you set the trace instruction from the called side (or the calling side) in advance, the route information will be automatically stored for each incoming call (or outgoing call).
There is also an effect that route information can be easily collected. Also,
According to the instruction from the operation device, it is possible to obtain the route information by tracing the call from the receiving node side (the transmitting node side) even for a call during communication. Moreover, the transmission quality can be measured by using the pattern signal.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a connection route tracing method for a communication network according to the first embodiment of this invention.

FIG. 2 is a diagram for explaining a case of branch connection in a connection route tracing method for a communication network according to the first embodiment of this invention.

FIG. 3 is a diagram showing a control flow of a node [N] when a trace instruction control signal of a connection route tracing method of a communication network according to the first embodiment of the present invention is received.

FIG. 4 is a node [N] when a trace collection signal of a connection route tracing method of a communication network according to the first embodiment of the present invention is received.
FIG. 6 is a diagram showing a control flow of the above.

FIG. 5 is a diagram showing a trace instruction control signal, a trace collection signal, a NO. The figure which shows the relationship with a 7 common line signal system.

FIG. 6 is a diagram for explaining a system to which the method of tracing a connection route from the receiving side is applied and the operation thereof according to the second embodiment of the present invention.

FIG. 7 is a diagram for explaining a specific configuration of a node in the method of tracing a connection route from the called side according to the second embodiment of the present invention.

FIG. 8 is a flowchart illustrating an operation of accumulating equipment information at a node of a method of tracing a connection route from a called side according to the second embodiment of the present invention.

FIG. 9 is a flowchart illustrating an operation when a trace collection signal is received by a node of a connection route tracing method from a called side according to the second embodiment of the present invention.

FIG. 10 is a diagram for explaining an example of information format transferred between nodes in the connection route tracing method from the called side according to the second embodiment of the present invention.

FIG. 11 is a diagram illustrating a system when ISUP of a connection route tracing method from the called side of the second embodiment of the present invention is used.

FIG. 12 is a diagram for explaining a system when ISUP is used in a network that does not support the connection route tracing method from the called side according to the second embodiment of the present invention.

FIG. 13 is a diagram for explaining a system to which the method for tracing a connection route from the transmission side according to the third embodiment of the present invention is applied and its operation.

FIG. 14 is a diagram illustrating a specific configuration of a node in a method of tracing a connection route from a transmission side according to the third embodiment of the present invention.

FIG. 15 is a flowchart illustrating an operation of accumulating equipment information in a node of a method of tracing a connection route from a transmission side according to the third embodiment of the present invention.

FIG. 16 is a flowchart for explaining an operation when a trace collection signal is received by a node of the connection route tracing method from the transmitting side according to the third embodiment of the present invention.

FIG. 17 is a diagram for explaining the system when ISUP of the connection route tracing method from the transmission side of the third embodiment of the present invention is used.

FIG. 18 is a diagram illustrating a system configuration and an operation of a connection route tracing method for a communication network of a conventional example.

[Explanation of symbols]

 5 communication network 6 operation device 7 test terminal 8 signal relay station 10, 30 subscriber system node, 20 relay system node, 101, 201, 301 speech path device 102, 302 subscriber signal processing device 103, 203, 303 control device 104 , 204, 304 Relay signal processing device 105, 205, 215, 305 Demultiplexing device 106, 206, 306 Pattern signal transmitting / receiving device 107, 307 Operation interface device. 108, 308 Termination device af Node A, B user

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[Procedure amendment]

[Submission date] November 10, 1992

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

[0032]

Embodiments of the present invention will be described below with reference to the drawings.

Claims (15)

[Claims] 1. A method for tracing a connection route of a communication network in which three or more natural number L nodes are connected in numerical order, wherein each node stores equipment information of equipment used for call connection at the time of connection for a call. A facility information accumulating means for performing a trace of the first node [1] of the L nodes, which is set in advance and indicates that the call is to be traced at either the time of calling or the time of receiving a call. The instruction control signal is transferred to the node [2] at the subsequent stage, and the intermediate node [N] (N is a natural number of 2 or more and L-1 or less)
Stores the connection information X _{N of the} call of its own node in the facility information storage means based on the trace instruction control signal from the node [N-1] in the previous stage, and sends the trace control signal to the node [N + 1] in the subsequent stage. A method for tracing a connection route of a communication network characterized by transferring. 2. The last node [L] of the L nodes is the call stored in the equipment information storage means of each node based on the trace instruction control signal from the preceding node [L-1]. along with trace collection signals for collecting facility information X _{1 to L} transferred to the subsequent node equipment information X _L of the call of the own node as the connection information M _L [L-1], the middle node [N] is Connection information is added to the connection information M _{N + 1} from the node [N + 1] of the previous stage based on the trace collection signal from the node [N + 1] of the previous stage, and the equipment information X _{N of the} call stored in the facility information storage means of the own node. A node [N-1] in the subsequent stage together with the trace collection signal as M _N
The method for tracing a connection route of a communication network according to claim 1, wherein 3. A natural number T of two or more natural number nodes [N + 1] _K (K = 1 to 2) in the node [N] on the way of the call.
The node [N], which is branched and connected to T), creates T trace instruction control signals based on the trace instruction control signal from the node [N-1] at the previous stage, and outputs the equipment information X _{N of the} call. 2. A connection route tracing method for a communication network according to claim 1, wherein the trace instruction control signal is stored in the facility information storage means of the own node and transferred to the T nodes [N + 1] _K in the subsequent stage. 4. A natural number T number of preceding node [N + 1] _K (K = 1 to 2) in the node [N] on the way of the call.
T) is branched and connected, and the node [N] on the way is connected to the connection information M _{N + 1, K} from the node [N + 1] _K in the preceding stage based on the trace collection signal from the node [N + 1] _K in the preceding stage. Equipment information X of the call stored in the equipment information storage means
_2. A connection route tracing method for a communication network according to claim 1, wherein _N is added and the connection information M _N is transferred together with this trace collection signal to a node [N-1] at a subsequent stage. 5. A connection route tracing method for a communication network, comprising a subscriber node accommodating subscribers, a connection node, and an operation device for performing network management and communication path tracing instructions, wherein each node comprises: A facility information storage unit that stores facility information of a facility used for call connection at the time of connection to a call is provided, and the operation device accommodates the user when tracing a communication path of the user. A node for instructing a communication route trace, wherein the subscriber node receives an incoming call to a user whose communication route trace is instructed from the operation device,
While notifying that the user is a communication route trace target to the preceding connection node, accumulates the equipment information of its own node in the equipment information storage means, and the preceding connection node sequentially applies the user to the preceding connection node. That the target node is a communication route trace target, the facility information storage means stores the facility information of its own node, and the subscriber node accommodating the destination user is the communication route trace target user. Of the call, the equipment information of the own node for the call is transmitted to the connection node of the subsequent stage, and the connection node of the latter stage sequentially receives the equipment information received by the node of the latter stage from the self node and the equipment accumulated in the own node A method of tracing a connection route from a called side, which is characterized in that the information and the information are transmitted together. 6. A connection route tracing method for a communication network, comprising a subscriber node for accommodating subscribers, a connection node, and an operation device for performing network management and communication path tracing instructions, wherein each node comprises: A facility information storage unit that stores facility information of a facility used for call connection at the time of connection to a call is provided, and the operation device accommodates the user when tracing a communication path of the user. A node for instructing a communication route trace, wherein the subscriber node receives an incoming call to a user whose communication route trace is instructed from the operation device,
Notifying the connection node of the preceding stage that the user is a communication path trace target and transmitting the equipment information of the own node accumulated in the equipment information accumulating means, the connection node of the preceding stage sequentially relates to the connection nodes of the preceding stage. The user notifies the communication route tracing target, and sends the equipment information of the own node accumulated in the equipment information accumulating means and the equipment information received from the connection node of the latter stage to the connection node of the former stage, and the transmission is made. The subscriber node accommodating the destination user combines the equipment information of the own node and the equipment information received from the connection node of the next stage with respect to the call of the notification indicating that the user is the communication path trace target user, A method for tracing a connection route from a called side, which is characterized by transmitting to a subscriber node accommodating a user. 7. A subscriber node accommodating a terminating user, when there is an instruction to read the trace information from the operation device for the collected equipment information of all communication paths,
7. The method of tracing a connection route from the receiving side according to claim 5 or 6, wherein the method is periodically transmitted to the operation device. 8. A subscriber node accommodating the subscriber comprises pattern signal generating means and pattern signal identifying means, each node comprises pattern signal folding means, and each node is based on an instruction from the operation device. ,
8. The incoming call according to claim 5, wherein the transmission quality of the communication path is measured by returning the pattern signal between arbitrary connection nodes in the communication path collected from the subscriber node by the communication path trace. How to trace the connection route from the server side. 9. The subscriber node that has received a trace instruction of a communication route from the operation device during communication between users of an arbitrary subscriber node is a subject of a trace of the communication route of the user to a preceding connection node. In addition, the facility information storage means stores the facility information of its own node, and the preceding connection node sequentially notifies the preceding connection node that the user is a communication route trace target, and the equipment information storage means The facility information is stored, and the facility information is stored.
A method of tracing the connection route from the called side as described in any one of. 10. A subscriber node for accommodating a subscriber,
In a connection route tracing method of a communication network comprising a connection node and an operation device for performing network management and a communication route tracing instruction, each node provides facility information of facilities used for call connection at the time of connection for a call. The operation device includes means for accumulating facility information and accumulating means for instructing a communication path trace to the subscriber node accommodating the user when tracing the communication path of an arbitrary user; The interpersonal node receives a call from the user who is instructed to trace the communication route by the operation device,
The next connection node is notified that the user is a communication route trace target, and the equipment information of the own node is stored in the equipment information storage means, and the next connection node sequentially communicates the user to the next connection node. Notify that it is a route trace target,
The subscriber node accommodating the equipment information of its own node in the equipment information accumulating means and accommodating the destination user receives the equipment information about the call of the notification that the user is the user of the communication path trace before the own node. The connection node of the preceding stage, the connection node of the preceding stage sequentially transmits the facility information received by the node of the preceding stage from the own node and the facility information accumulated in the own node in sequence, from the transmission side. Route trace method. 11. A subscriber node for accommodating a subscriber,
In a connection route tracing method of a communication network comprising a connection node and an operation device for performing network management and a communication route tracing instruction, each node provides facility information of facilities used for call connection at the time of connection for a call. The operation device includes means for accumulating facility information and accumulating means for instructing a communication path trace to the subscriber node accommodating the user when tracing the communication path of an arbitrary user; The interpersonal node receives a call from the user who is instructed to trace the communication route by the operation device,
Notifying the next connection node that the user is a communication route trace target, and transmitting the equipment information of the own node accumulated in the equipment information accumulating means, and the next connection node sequentially transmits the user to the next connection node. Notifies that the target is a communication route trace,
The equipment information of the own node accumulated in the equipment information accumulating means and the equipment information from the connecting node at the preceding stage are combined and transmitted to the next connecting node, and the subscriber node accommodating the destination user is the communication path trace. It is characterized in that the equipment information of the own node and the equipment information received from the connection node at the previous stage regarding the call of the notification of the target user are transmitted to the subscriber node accommodating the destination user. How to trace the connection route from the sender. 12. When the call connection to the next connection node is impossible at any connection node, the call setup impossible information is accumulated in the own node and the equipment information of the own node is transmitted to the connection node at the preceding stage, The method of tracing a connection route from a transmitting side according to claim 10 or 11, wherein the connection node at the preceding stage sequentially transmits the equipment information received by the node upstream of the own node and the equipment information accumulated in the own node together. 13. A subscriber node accommodating a calling user transmits the collected equipment information of all communication paths to the operation device when there is an instruction to read the trace information from the operation device. 13. The method of tracing a connection route from a transmitting side according to claim 10, wherein the method is a method of tracing a connection route from a transmitting side. 14. A subscriber node accommodating the subscriber includes pattern signal generating means and pattern signal identifying means, each node includes pattern signal returning means, and each node is based on an instruction from the operation device. ,
5. The transmission according to claim 1, wherein the transmission quality of the communication path is measured by returning the pattern signal between arbitrary connection nodes in the communication path collected by the communication path trace from a subscriber node. How to trace the connection route from the server side. 15. The subscriber node that has received a trace instruction of a communication route from the operation device during communication between users of any subscriber node is a subject of the trace of the communication route of the user to the next connection node. In addition, the facility information storage means stores the facility information of its own node, and the next connection node sequentially notifies the next connection node that the user is a communication route trace target and the facility information storage means. 10. The equipment information is stored by means of claim 10.
4. A method for tracing a connection route from the transmission side according to any one of 4 above.