JPH0142178B2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention is for establishing a rational audit system by determining the connection status of outgoing calls in a subscriber telecommunications system and automatically punching various investigation data on paper tape. The present invention relates to a method that enables the connection inspection device for subscriber telephones to inspect lines using the keyboard selection method (CD method).

(Prior art) The transmission format of selection signals for subscriber lines and trunk lines that can be audited by a conventional crossbar-type subscriber line connection inspection device is either single-current (SC) using dial pulses or double-current (DBC). There are only two types, and if the selection signal is sent from the subscriber telegraph terminal using the keyboard selection method (CD method) due to equipment renewal of the current switching center equipment or the addition of a new service, this cannot be applied. .

This function of transmitting selection signals using the keyboard selection method (CD method) is originally provided in existing subscriber telecommunication premises equipment, and sending selection signals in codes using the keyboard reduces the connection time at the exchange. Although this is an extremely effective method for such purposes, no method has been realized that enables line auditing using this key board selection method.

Figure 1 shows a diagram of the conventional line auditing method. In FIG. 1, 1, 6, and 10 are subscriber telegraph terminals using the dial selection method (DP method), 1 is a subscriber telegraph terminal within the own station, 6 is a subscriber telegraph terminal outside the area,
10 is a subscriber telegraph terminal via a concentrator.
2, 8, 13 are connection strings for connecting the audit line,
Reference numerals 3, 9, 14, and 15 are call detection units provided in the crossbar-type subscriber telephone connection inspection device.The call detection unit 3 draws in the subscriber telegraph terminal 1 within its own station, and the call detection unit 9 detects connections outside the area. The subscriber telegraph terminal 6 is pulled in, and the origination detection unit 1
4 and 15 draw in the subscriber telegraph terminal 10 via the concentrator. 4 is the transmission detection unit 3, 9, 1
5 is a judgment unit that makes a line audit judgment; 7 is a repeater; 11 is a concentrator; 12 is a bidirectional trunk;
Reference numeral 6 designates a trunk line connector which connects the subscriber telegraph terminal 10 via the concentrator 11 to the determination unit connector 4 via the origination detection units 14 and 15, and 17 a line circuit unit.

(Object of the Invention) An object of the present invention is to provide a means that enables line auditing using a keyboard selection method.

(Structure of the Invention) The present invention is useful for auditing subscriber lines and trunk lines to which communication connections are made directly or via a concentrator using a dial selection method and a keyboard selection method from subscriber telegraph terminals in a crossbar type subscriber telecommunications exchange. , the line is drawn into the originating detection unit provided in the crossbar-type subscriber telephone connection inspection device, and the line is identified as a key board selection method based on the accommodation position in the originating detection unit or on a per originating detection unit basis; This is a line inspection method based on a selection board, which is characterized in that this identification information is transferred to the judgment unit via the judgment unit connector or via the trunk line connector and the judgment unit connector.

FIG. 2 shows a line auditing method diagram according to the present invention.

In FIG. 2, reference numerals 1, 6, and 10 indicate subscriber telecommunication terminals based on the CD system, and the others are the same as in FIG. 1. However, in order to add a line auditing function for the CD system, a circuit for identifying whether it is the DP system or the CD system and a DP and CD relay are installed in the call detection units 3, 9, 14, and 15 and the judgment unit 5. Shown in Figures 3 and 4.

Figure 3 shows that when auditing subscriber lines, the identification information generation unit and judgment unit indicate that the lines accommodated by the calling detection unit are CD type for lines 0 to 4 and DP type for lines 5 to n. This is an example of a transfer route of C0, 1, .

Figure 4 shows that when auditing a trunk line, the audit line
This is an example of the identification information creation section and transfer route for either the CD method or the DP method.

In the case of trunk line auditing, multiple outgoing detection units are aggregated using a trunk line connector, so the CD method or
The DP method uses a method in which each call detection unit accommodates one type of line group, thereby simplifying the auditing circuit. Therefore C
0, 1...n are C, not shown, which operate in response to the transmission detection unit accommodated in the trunk line connector.
The relay circuits, which are make contacts of relays and housed in transmission detection units 0, 1, and 2, are all CD
Types that accommodate 3, 4...n all indicate DP type lines.

Fig. 5 shows the reception section in the judgment unit for various signals input from the audit line, and when the CD relay (not shown) of the judgment unit operates,
In the judgment unit, the selection signal based on the CD method is 1
The signal is input from the INF terminal to the serial-parallel code converter (hereinafter referred to as SPCV) via the route . SPCV transmits a selection signal with 6 unit codes each time 1 character is received.
Output to lines 2 to 6. This is done using conversion circuit A in 3.
The data is converted into a 2out of 5 format and stored sequentially in relays (not shown). When all digits of the selection signal have been received and stored, a CH relay (not shown) operates, and the transfer contact ch switches the input side to the route 4 and the output side to the conversion circuit B 5, and the SPCV receives the answer back signal or A service signal is received, and the received information is stored in the identification relay, which is also not shown.

(Object of the Invention) As explained above, when adding a new CD system line auditing function, a second
By adopting a distributed system that partially restricts accommodation as shown in the figure, modification of the judgment unit circuit, which is the main control device, can be reduced.

Furthermore, since this line auditing method is applied to local areas with a relatively large number of lines to be inspected, such as affiliated telegraph exchanges, even if there are some capacity restrictions for the above-mentioned call detection unit, the division loss can be ignored, making it extremely difficult. valid, the crossbar subscriber telegraph switching equipment has been updated,
Even after the new equipment is installed, it can be used to audit subscriber lines and relay lines from concentrator stations.

[Brief explanation of drawings]

Figure 1 is a diagram of a conventional line auditing method, Figure 2 is a diagram of a line auditing method according to the present invention, and Figures 3 and 4 are identification of whether the audit line in the call detection unit is the DP method or the CD method according to the present invention. FIG. 5 shows an example of the information generation section, and an example of the input signal reception, conversion and storage section in the determination unit according to the present invention. 1, 6, 10... Calling side terminal, 2, 8, 13...
...Connection cord for connecting audit line, 3, 9, 14,
15... Call detection unit, 4... Judgment unit connector, 5... Judgment unit, 7... Repeater, 11... Automatic concentrator, 12... Bidirectional trunk, 16... Trunk line connector, 17... Line circuit unit.

Claims (1)

[Scope of Claims] 1. When auditing subscriber lines and relay lines to which communication connections are made directly or via a concentrator from a subscriber telegraph terminal using a dial selection method and a keyboard selection method at a crossbar type subscriber telecommunications exchange, The line is drawn into the call detection unit installed in the connection inspection device for telephone access, and the line is identified as a key board selection method based on the housing position in the call detection unit or the call detection unit unit, and this identification is performed. A line auditing method based on keyboard selection, characterized in that information is transferred to a judgment unit via a judgment unit connector or via a trunk line connector and a judgment unit connector. 2. Claim 1, characterized in that the origination detection unit draws in a plurality of lines to be audited, and accommodates them in a distributed manner in the plurality of origination detection units according to the type of the audit line and the selection signal and signal format of the audit line. A line auditing method based on the keyboard selection described in Section 1. 3 Subscriber lines are divided into single-flow type and double-flow type,
2. A line auditing system using a selection board as claimed in claim 1, wherein each transmission detection unit is accommodated in units of transmission detection units. 4. The group of relay lines from the concentrator station that accommodates the group of subscriber lines based on the dial selection method is a separate group from the group of relay lines based on the dial selection method, and is housed separately for each call detection unit. The unit group is selected with priority within the trunk line connector, and the selected outgoing detection unit activates the judgment unit connector via the trunk line connector, connects to the judgment unit, and transfers the identification information of the check board selection method to the judgment unit. A line auditing method using a keyboard selection according to claim 1. 5. Claims characterized in that the subscriber line transfers the identification information of the key board selection method, which is identified in the calling detection unit to correspond to the audit line, to the judgment unit through the judgment unit connector, not through the trunk line connector. A line auditing method based on the keyboard selection described in Section 1.