JPS6093868A - Data telephone terminal test equipment - Google Patents

Abstract

PURPOSE:To decrease troubles of the user selecting a test equipment by adding a type identification function of a calling terminal to a data telephone terminal test equipment to eliminate the need for provision of a subscriber number by terminal equipment types. CONSTITUTION:An incoming calling signal is received by a response circuit section. The 2nd dial tone is transmitted to a data telephone terminal through a dial tone transmission section by the operation of a ring trip circuit. The information from the data telephone terminal is waited for reception during a certain time and type identification information of the data telephone terminal is received by a PB receiver PBREC by using the PB signal. A communication mode switching control section MCCONT identifies the communication mode (PB/FM) from the received information to connect a channel coupling section SP and an FM signal transmission/reception section FMRS thereby transmitting a terminal type identification end signal to the data telephone terminal. Then the communication is performed by the communication code set at first.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data telephone terminal testing device that performs various data telephone terminal function tests after identifying the type of data telephone terminal via a general telephone line.

Conventionally, when performing a functional test on a data telephone terminal, it is necessary to connect it to a data telephone terminal testing device that matches the communication mode (PB/FM) of the calling terminal. I had to dial a number.

For this reason, since the test equipment is accommodated on a line assigned a subscriber number for each type of data telephone terminal, the number of line facilities is large depending on the terminal type, and service conditions do not deteriorate due to the distribution of calling terminals. The disadvantage is that a large number of terminal testing devices must be installed.

The present invention provides a conventional data telephone terminal testing device for testing various functions of data telephone terminals installed on the exchange side via a general telephone exchange, dial tone transmission function, PB signal reception function, and 9-speed double speed switching. By adding a function and a communication mode switching control function, after a call is received from the data telephone terminal to the test equipment, a second dial tone is sent to the nuclear calling terminal, and the terminal sends a PB double signal to the calling terminal. Upon receiving the type information, the Mukuro test device determines the type of the calling terminal based on the received information based on the identification edge, communication mode (PB/PB/
By automatically matching the FM) with the calling terminal, there is no need to accommodate the test equipment on the line assigned subscriber numbers for each type of data telephone, thereby minimizing line equipment and further It is an object of the present invention to provide a data telephone terminal testing device that does not cause unbalanced services because it is not necessary to install a -C testing device corresponding to each number of terminals.

Second, regardless of the terminal type, one subscriber number (
It is an object of the present invention to provide a data telephone terminal testing device that can reduce the trouble for users and reduce the number of erroneous call arrivals, etc., by allowing the testing device to receive calls using a pilot number.

In order to achieve the above object, the present invention provides a dial tone sending section to a data telephone terminal testing device installed on the exchange side via a general telephone line exchange.

A PB signal receiving section 9 is added with a communication speed switching section and a communication mode switching control section, and after receiving a call from various data telephone terminals, the terminal testing device performs a second
The configuration is such that the system transmits a dial tone, receives terminal type information from the data telephone terminal using the PBB method, recognizes the calling terminal type, and thereafter performs various terminal tests using the signaling method that matches the calling terminal. It is characterized by.

Examples of the present invention will be described below.

FIG. 1 is a relay system diagram showing a relay system to which the terminal testing device of the present invention is applied, and FIG. 2 is an explanatory diagram showing the communication sequence thereof.

As shown in Figures 1 and 2, data telephone terminal users:
After receiving the first dial tone sent from the exchange,
Data telephone terminal and data telephone terminal test equipment (
In the case of a test call from another station by known means, by dialing the subscriber number assigned to AATE),
Data telephone A (D-place-A) One terminal station A (LS-
A) - Outgoing trunk (OGT) - Incoming) run/(ICT) One end station B (LS-B) - In the case of a test call from the AATE train or from the own station, data telephone B (D-place-B ) One end station B (LS-B) - Internal trunk (IOT)
)-AATE trains respectively.

Next, FIG. 3 is a block diagram showing the circuit configuration of an embodiment of the terminal testing device of the present invention.

In the same figure, the terminal testing device of the present invention has a response circuit section ANS.
, a communication path coupling section SP, and an FM signal transmitting/receiving section FMREl.
and a control unit C0NT.
It is constructed by adding the circuit shown within the broken line.

As an added circuit, a circuit is connected between the response circuit section ANS, the communication path coupling section SP, and the control section C via the transformer DT.
(dial connected to 0NT) -on sending unit DT8
, the communication path coupling section SP, and the FM signal transmitting/receiving section FM.
A PB signal receiving unit PBREC connected between R8 via a switching contact mch, a communication speed switching unit SDC connected to the FM signal transmitting/receiving unit FMR8, and the switching contact mc
mode switching relay MCH that switches h, the PR signal receiving section PBREC, communication speed switching section SDC, and mode switching relay MCHK connected communication mode switching control section M
CC0NT.

Next, the operation of this embodiment will be explained. First, the incoming call signal (16Hz) is sent to the response circuit section (AN
S). The operation of the ring trip circuit sends out a second dial tone to the data telephone terminal through the dial tone sending unit (DTS) and the sytrans (DT). The terminal waits to receive information from the data telephone terminal for a certain period of time, and receives the type identification ff information of the data telephone terminal using the PB double signal at the PB receiver (PBREC). In this case, the PB double signal 1-digit receiver, the control unit (CON
The second dial tone is stopped by command from T).

The communication mode switching control unit (MCCONT) identifies the communication mode (PB/FM) from the received information and switches the mch
Switch the contact to the FM signal transmitting/receiving unit (FMR8) side, connect the communication path coupling unit (SP) and the FM signal transmitting/receiving unit (FMR8), and send the terminal type identification completion signal (PB) to the data telephone terminal from the FMR8. 185011 for mode
z for 1.5 seconds, 1650Hz for 1 in FM mode.
．． 5 seconds).

Thereafter, unless information for switching the data telephone type identification is sent during the process, communication will be performed in the originally set communication mode as before. Here, when communication is performed in FM mode, the FM signal transmitting/receiving section (FMR8) is controlled to set a multiple communication speed by the communication speed switching section (8DC).

After the data communication ends and a disconnection signal from the data telephone terminal is detected, the data telephone terminal testing device is restored.

As explained above, the present invention adds a calling terminal type identification function to a conventional data telephone terminal testing device.
This eliminates the need to assign subscriber numbers to each terminal type, reducing line equipment.

This eliminates the bias in services depending on the type of terminal, and has the effect of reducing the complexity for users when selecting a test device.

[Brief explanation of the drawing]

FIG. 1 is a relay system diagram showing a relay method to which the terminal testing device of the present invention is applied, FIG. 2 is an explanatory diagram showing the communication sequence, and FIG. 3 is a circuit configuration of an embodiment of the terminal testing device of the present invention. It is a block diagram. D-Place-A, B...Data telephone terminal A, BLS-
A, B... Terminal exchange A, B AATE... Data telephone terminal testing equipment OCT...
・Outgoing trunk ICT...Incoming trunk IOT...Internal trunk ANS...Response circuit section DTS...Dial tone sending section DT...Transformer sp,...Communication path coupling section mch...Switching Contact MCH...Mode switching relay PBREC...PB signal receiving section FMR8...FM signal transmitting/receiving section SDC...Communication speed switching section MCCONT...Communication mode switching control section C0NT ・
...Control Department Applicant: NEC Corporation

Claims (1)

[Claims] A dial tone sending unit, a PB signal receiving unit 2, a communication speed switching unit, and a communication mode switching control unit are added to a data telephone terminal testing device installed on the exchange side via a general telephone line exchange, and the above-mentioned terminal After receiving a call from various data telephone terminals, the test equipment transmits a second dial tone to the data telephone terminal, receives terminal type information from the data telephone terminal using the PBB method, and recognizes the calling terminal type. A data telephone terminal testing device characterized in that it is configured to thereafter perform various terminal tests using a signal system that matches that of the calling terminal.