CN100440902C - An interactive method for managing information in a voice monitoring system - Google Patents

Abstract

The present invention proposes an interactive method for managing information in a voice monitoring system, which is suitable for Public Switching Telephone Networks (PSTN), and No. 7 signaling is used to carry monitoring management between the voice monitoring system and the PSTN switch. The information includes setting the monitored user data by the monitoring center and deleting the monitored user data by the monitoring center. By adopting the present invention, the existing network resources can be fully utilized, and the upgrade cost of the monitoring system of the network equipment at the side of the existing public telephone switching network can be greatly reduced. No need to add new hardware devices, no need to add new physical interfaces; use the mature No. 7 signaling system as the bearer, only need to redefine and interpret some cells of some protocols (such as TUP, ISUP), and modify the software convenient.

Description

An interactive method for managing information in a voice monitoring system

technical field

The invention relates to a voice monitoring system of a public switching telephone network (Public Switching Telephone Networks, PSTN), in particular to an interactive technology of management information in the voice monitoring system.

technical background

As shown in Figure 1, the currently implemented PSTN voice monitoring systems are all based on the following principles: when user A and user B on the public switched telephone network side talk, the public switched telephone network temporarily provides a two-way transmission line for the pair of users, so that A When speaking, B can hear what A is saying; when B is talking, A can hear what B is saying. If when A is speaking, B can hear what A is saying, and at the same time, user C can also hear what A is saying; when B is talking, A can hear what B is saying, and at the same time, user C can also hear The content of B's speech, then user C can not only hear the content of A's speech, but also the content of B's speech, and record the content heard by user C to get the complete content of the conversation between A and B. The monitoring system is equivalent to the user C, who can record the content of the conversation between A and B in a call forwarded from the public telephone switching network side. In terms of technical implementation, the switch equipment on the side of the public telephone switching network has the characteristic of broadcasting the content of the call, that is, when a caller A speaks, the related callers B, C, D, etc. can simultaneously hear the speech of the caller. On the monitoring center side, the monitoring system receives two or more one-way conversation monitoring calls of one conversation on the public switched telephone network side (in the case of a conference call) through the TDM voice channel interface, and monitors these multiple single-way conversations belonging to the same conversation. Record the call to the call monitor, and record the calling and called numbers of the call, call start time and other call-related information.

According to the ETSI technical specification, three interfaces are defined between the listening center and the PSTN equipment, namely HI1, HI2, and HI3, as shown in Figure 2.

The HI1, HI2, and HI3 interfaces perform the following functions respectively:

The HI1 interface completes the interaction of monitoring management information between the monitoring center and the network equipment of the public telephone switching network;

The HI2 interface completes the mobile public telephone switching network side equipment reporting monitoring related information to the monitoring center, including user call-related activity events (such as call transfer supplementary services), call-related activity events (such as power-on, power-off) and short message content. The monitoring system does not need to implement this interface;

The HI3 interface completes the public telephone switching network network equipment to report the monitoring content to the monitoring center.

In the currently implemented monitoring system, the HI1 interface is mainly implemented in two ways:

Method 1: Manually, the monitoring center sends the operation file to the service provider, and the service provider manually inputs it into the network equipment of the public telephone switching network.

Method 2: Contact the monitoring center and the public telephone switching network side equipment through TCP/IP and X.25, and the monitoring center will issue monitoring management operation instructions to automatically complete the data setting of the public telephone switching network side equipment.

Method 1. Manually monitoring and interacting with management information has the following disadvantages:

1. It is not safe to use, and it is easy to cause leakage. The monitoring system should not keep the user interface at the service provider, which can easily lead to leaks.

2. It is inconvenient to use. It is time-consuming and labor-intensive to add and delete monitored users, and to modify the attributes of monitored users.

The main disadvantages of the second way to interact through TCP/IP and X.25 are:

1. The upgrade cost of the monitoring system of network equipment on the public telephone switching network side is high, because most of the switch equipment running on the existing network does not support TCP/IP and X.25 interfaces, and new interface equipment needs to be added, resulting in high upgrade costs.

Contents of the invention

The purpose of the present invention is exactly a kind of interactive method for managing information in the voice monitoring system of the public telephone switching network, which can make full use of the original network equipment resources to solve the monitoring system HI1 interface adaptation, so that the public telephone switching network side network equipment The monitoring system upgrade cost is reduced to a minimum.

A method for interacting management information in a voice monitoring system, suitable for public telephone switching networks, where the monitoring center uses No. The message exchanges information with the switch of the public telephone switching network to configure the monitored user data.

further comprising the following steps:

a. The monitoring center sets the monitored user data;

b. The monitoring center deletes the monitored user data.

Described step a further comprises:

a1, the monitoring center sends the initial address message TUP IAI to the public telephone exchange network switch by the monitored user setting instruction telephone user part;

a2. The switchboard of the public switched telephone network feeds back the full message TUP ACM of the registration execution result of the monitored user to the monitoring center.

The intercepted user setting instruction TUP IAI in step a1 includes the called user address cell, the original called address cell, and the calling address cell.

The monitored user registration execution result TUP ACM in step a2 includes a message indication code information element, indicating whether the monitored user registration execution is successful.

Said step b further comprises:

b1, the monitoring center sends the monitored user deletion instruction TUP IAI to the public telephone switching network switch;

b2. The public switched telephone network exchange feeds back the execution result TUP ACM of the monitored user deletion to the monitoring center.

The intercepted user deletion instruction TUP IAI in step b1 includes the called user address cell, the original called address cell, and the calling address cell.

The intercepted user deletion execution result TUP ACM in step b2 includes a message indication code information element, indicating whether the intercepted user deletion is successful.

By adopting the present invention, the existing network resources can be fully utilized, and the upgrade cost of the monitoring system of the network equipment at the side of the existing public telephone switching network can be greatly reduced.

First, there is no need to add new hardware devices or new physical interfaces;

Secondly, using the mature No. 7 signaling system as the bearer, it only needs to redefine and explain some cells of some protocols (such as TUP and ISUP), and the software modification is convenient.

Description of drawings

Fig. 1 is a schematic diagram of the principle of the PSTN monitoring system;

Fig. 2 is a schematic diagram of the interface between the PSTN monitoring center and the public telephone switching network equipment;

Fig. 3 is a schematic diagram of monitoring management information interaction in the present invention;

Fig. 4 is a flow chart of setting of monitored users in the present invention;

Fig. 5 is a flow chart of deleting a monitored user in the present invention.

Detailed ways

The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

On the public telephone switching network side, the signaling interaction between network devices is mainly through No. 7 signaling. Similarly, the monitoring management information interaction between the monitoring center and the public telephone switching network equipment can also be understood as a signaling interaction. The invention is to use the existing No. 7 signaling to carry monitoring management information to realize the signaling interaction between the monitoring center and the network equipment of the public side network. As shown in Figure 3.

The HI1 interface message, that is, the interaction process of monitoring management information includes the process of setting the monitored user and the process of deleting the monitored user.

The monitored user data is uniformly managed by the monitoring center, distributed in the network equipment on the public telephone switching network side, and the data is uniformly managed by the monitoring center.

The monitored user setting process is shown in Figure 4. The monitoring center sends the monitored user setting instruction TUP IAI message to the public switched telephone network switch; the public switched telephone network switch feeds back the monitored user registration execution result TUP ACM message to the monitoring center.

Wherein the direction of the monitored user registration instruction TUP IAI message is from the monitoring center to the public telephone exchange network exchange, and the function is to set the monitored user to the public telephone exchange network exchange side.

The message is carried by the TUP IAI message, and the definition of the message cell is shown in Table 1:

Table 1

IAI message cell bearer information Remark Called address cell Listening center access number Original called address cell The monitored user number calling address cell 1. Command word 8bit2, monitor attribute 8bit3, monitor end date 4*8bit 1. Command word: monitored user registration: 0x192, monitoring attribute: ordinary user: 0x00 key user: 0x01

The content of the calling address cell is shown in Table 2:

Table 2

The monitored user deletion process is shown in Figure 5. The monitoring center sends the monitored user deletion instruction TUP IAI message to the public switched telephone network switch; the public switched telephone network switch feeds back the monitored user deletion execution result TUP ACM message to the monitoring center.

Wherein the direction of the monitored user deletion instruction TUP IAI message is from the monitoring center to the PSTN switch, and the function is to set the monitored user to the PSTN switch side.

The message is carried by the TUP IAI message, and the definition of the message cell is shown in Table 3:

table 3

IAI message cell bearer information Remark Called address cell Listening center access number Original called address cell The monitored user number calling address cell 1. Command word 8bit 1. Command word:

2. Monitoring attribute 8bit3, monitoring end date 4*8bit Canceled by the monitoring user: 0x182, monitoring attribute: ordinary user: 0x00 key user: 0x01

The content of the calling address cell is shown in Table 4:

Table 4

In addition, both the monitored user setting process and the monitored user deletion process include the monitored user registration and deletion response messages. The direction of the monitored user registration and deletion response messages is from the public telephone exchange network switch to the monitoring center. The function is public The switchboard of the telephone exchange network feeds back the execution results of the registration and deletion operations of the monitored user to the monitoring center.

The message is carried by the TUP ACM message, and the definition of the message cell is shown in Table 5:

table 5

IAI message cell bearer information Remark Message indicator code information element The monitored user registers and deletes the execution result.

The message indicator code is 8BIT, where BIT1 and 2 are defined as follows:

00: All address signals

01: All address signals, registered/deleted users successfully

10: All addresses are signaled, and the monitored user registration/deletion fails

11: All address signals, reserved

By adopting the present invention, the existing network resources can be fully utilized, and the upgrade cost of the monitoring system of the network equipment at the side of the existing public telephone switching network can be greatly reduced.

First, there is no need to add new hardware devices or new physical interfaces;

Secondly, using the mature No. 7 signaling system as the bearer, it only needs to redefine and explain some cells of some protocols (such as TUP and ISUP), and the software modification is convenient.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technology can easily think of changes or replacements within the technical scope disclosed in the present invention. , should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (8)

1, the exchange method of management information in a kind of audio monitoring system, be applicable to Public Switched Telephony Network, it is characterized in that: carry management of monitor information by Signaling System Number 7 between listening center and the Public Switched Telephony Network switch, described listening center carries out the intercepted user data configuration by Telephone User Part TUP message and Public Switched Telephony Network switch interactive information.

2, the exchange method of management information in the audio monitoring system according to claim 1 is characterized in that: further may further comprise the steps:

A, listening center are set the intercepted user data;

B, listening center deletion intercepted user data.

3, as the exchange method of management information in the audio monitoring system as described in the claim 2, it is characterized in that: described step a further comprises:

A1, listening center send to the Public Switched Telephony Network switch with intercepted user setting command Telephone User Part initial address message TUP IAI;

A2, Public Switched Telephony Network switch are to listening center feedback intercepted user registration execution result Telephone User Part Address Complete Message TUP ACM.

4, as the exchange method of management information in the audio monitoring system as described in the claim 3, it is characterized in that: the setting command of intercepted user described in step a1 TUP IAI comprises called subscriber address cell, former called address cell, calling address cell.

5, as the exchange method of management information in the audio monitoring system as described in the claim 3, it is characterized in that: the registration of intercepted user described in step a2 execution result TUP ACM comprises the message indicator cell, and whether success is carried out in the registration of indication intercepted user.

6, as the exchange method of management information in the audio monitoring system as described in the claim 2, it is characterized in that: described step b further comprises:

B1, listening center send to the Public Switched Telephony Network switch with intercepted user delete instruction TUP IAI;

B2, Public Switched Telephony Network switch are to listening center feedback intercepted user deletion execution result TUPACM.

7, as the exchange method of management information in the audio monitoring system as described in the claim 6, it is characterized in that: the delete instruction of intercepted user described in step b1 TUP IAI comprises called subscriber address cell, former called address cell, calling address cell.

8, as the exchange method of management information in the audio monitoring system as described in the claim 6, it is characterized in that: the deletion of intercepted user described in step b2 execution result TUP ACM comprises the message indicator cell, and whether success is carried out in the deletion of indication intercepted user.

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