JPH0355995A - Isdn basic access network terminator - Google Patents

Abstract

PURPOSE:To save labor of checking the operating state of non-automatic TEI and the value of non-automatic TEI in operation by reading and displaying the value of a terminal equipment identifier used by an ISDN basic access terminal equipment automatically for each terminal equipment. CONSTITUTION:An ID VERIFY message is composed and sent to an ISDN exchange 1. The ISDN exchange 1 sends an identifier check request(ID CHECK REQUEST) message including a TEI to verify the TEI value included in the message. When the message reaches an ISDN basic access terminal equipment 17 and an ISDN basic access terminal equipment 1, the ISDN basic access terminal equipment HAVING a TEI subjected to verify request sends an ID CHECK RESPONSE message. A TEI extraction circuit 12 decodes the ID CHECK RESPONSE message on a D channel sent from the ISDN basic access terminal equipment, extracts the TEI in use and displays it on a TEI display circuit 13.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ISDN basic access subscriber network termination device, and more particularly to a network termination device having a function of reading terminal device identifier values of already deployed ISDN terminal devices.

[Conventional technology]

The terminal equipment identifier (TEI) for terminal identification of ISDN basic access subscriber terminals is an automatic TEL (TEL value = 64 to 1) that performs the assignment procedure with the network side when making and receiving calls.
26) and non-automatic TEI (T
There are EL values of 20 to 63), but when setting non-automatic TEI, it was often manually set for each terminal device when it was installed in the Is1)N basic access private bus.

[Problem to be solved by the invention]

However, if you set up non-automatic T E I in this way, if you want to add a terminal device with non-automatic T E I to an IsDN basic access private bus that already has one or more terminal devices installed, It is necessary to check all the non-automatic 'l' E Io values used by terminal devices for each installed terminal device and set a value that does not overlap with the non-automatic 'l' E Io value in use. For configurations in which deployed terminal devices are installed scattered within a premises or home, check the use/unuse status of the non-automatic TEI and the non-automatic 'i'bt value at the time of use for each terminal device. It takes a lot of effort. It is also possible to use a dedicated monitor device to check the used/unused state of non-automatic TEI of existing terminal equipment and the non-automatic TEI value at the time of use, but it would be costly for general subscribers to purchase and maintain. It takes.

(Means for solving the problem) ISDN basic access network terminal device UIS of the present invention
A basic access subscriber line termination section having a layer 1 termination function of a DN basic access subscriber line, and a layer 1
a basic access network termination control unit having a control function;
A conversion unit that converts an analog signal of the ISDN basic access S/'l' interface into a digital signal, and a C e I' that includes an input terminal device identifier value.
r Identifier verification (ID
VERIFY) a message assembling unit that assembles and sends a message; a message transmission selection unit that sends the verification message on the I channel toward the network termination control unit only when the verification message is assembled; and the message assembling unit. a subtraction counter unit that sets the identifier value to be input to the initial value “126” and starts subtraction from the initial value “126”;
A subtraction counter control unit that controls subtraction until the count value of the subtraction counter unit reaches ``O'', and an ISDN already installed on the basic access 8/T interface bus.
A D channel extractor extracts D channel data from data on the ISDN basic access S/T interface bus bm from a terminal device; and a basic access S/T from the D channel data extracted by the D channel extractor. CCITT Recommendation I.CCITT Recommendation I.S. Identifier check response (ID C}iECKR specified in 441)
ESPONSE) message and extracts the identifier value in the message; and a display section that displays the identifier value extracted by the extractor.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

Referring to FIG. 1 showing one embodiment of the present invention, one
2 is an ISDN basic access subscriber line, and 3 is a basic access network terminal device with a function of continuously outputting terminal device identifier values of ISDN subscriber terminal devices. 1
4 is ISDN basic access 8/T interface bus lower Di, xsdIs1)N basic access S/
The T interface bus up line 16 is a terminating resistor of the ISDN basic access S/T interface bus. In this embodiment, the engineering SDN basic access S/T
An ISDN basic access terminal device 17 and an ISDN basic access terminal device 18 are connected to an ISDN basic access S/T interface path consisting of an interface bus lower line 9@14 and an ISDN basic access 8/T interface bus up line 15. .

Next, with reference to FIGS. 1 and 2, the basic access network terminal device 3 with a function of successively outputting terminal device identifier values of ISDN subscriber terminal devices will be described in detail. The initial value "126#" of the TEI subtraction counter 10 is set in the ID VERIFY message assembly circuit 9 as the first terminal device identifier value, and the ID specified in CCITT Recommendation 1.441 is set.
Once the VERIFY message is constructed, the ID V
ERIFY message transmission selection circuit 8 switches fi, IS
On DN basic access S/T interface bus #
)! ID VERIF on the D channel that comes on 15
A Y message is inserted, and the ISDN basic access subscriber line 2 is transmitted via the basic access network termination control unit 5 and the basic access subscriber line termination unit 4, and the I
The information is transmitted to the SDN exchange 1. Figure 2 PCC I TT
Recommendation I. Indicates the frame sequence defined in the terminal device identifier verification request procedure specified in TEI 441, and TEI
The O value is set as n. This verification request procedure K therefore ISD
When the N exchange 1 receives the ID VERIFY message 1a, it sends an ID CHECK REQ (JEST) request containing the 'l'EI in order to verify the TEI value included in the message. '
) 2 Send a. This message 2a is ISDN
The basic access subscriber [2] is transmitted to the ISDN basic access S/T interface bus via the basic access subscriber line termination section 4, the basic access network termination control section 5, and the basic access S/T interface analog-to-digital conversion section 6. ISDN basic access terminal equipment 17 and ISU
Upon arrival at the N basic access terminal device l8, the second
ID CHECK RE arrived according to the procedure shown in the figure.
- ISDN basic access terminal equipment with the TEI requested for verification included in QUEST message 2a is ID CHECK EN8PON8E message 3
Send a. This message 3a is transferred to the D channel of the ISDN Basic Access 8/T interface bus up line 15, passes through the Basic Access 8/T interface analog-to-digital converter 6, and is further transmitted to the ISDN Basic Access 8/T interface.
Heading to the exchange 1, at this position, the D channel extraction circuit 7 extracts the channel, and II) C}IECK RE
8 The ID on the D channel sent by the ISL)f'll basic access terminal device is written in the TEI extraction circuit 12 in the PONSE message. C}iECK ESPO
N8k. Message 3a is decoded, the ISDN basic access terminal device 17 or ISI) N basic access terminal device 18 extracts the rEl in use, and
Displayed by the display circuit 13.

'In the IEI subtraction kakunta control circuit l1, the IDVE
ID VERIFY message transmission selection circuit 8
Receive it and start the timer. ID Cl-1
EcK R beg 8 PUN S E TE in message
Written in the L extraction circuit 12, LL) e}iEcKRE
When receiving the timing of receiving SPON8E message 3ai and extracting Thl, and IDCHECK RE
8P (JN8h: Message 3a not received, i.e. Ill vEa1Fy Verification requested with message 1a'
1' E The value of I is ISDN basic access terminal device 17 or ISDN basic access terminal atmis
The TEI reduction counter control circuit 11 checks the count value of the TEL subtraction counter 10 either when the button is pressed and the timer is not occupied and when the timer times out, and if it is a positive number, subtracts 1 from the counter value. control,
“If it is 0#, I will ask you, if it is “-1”, it will be IIJ.
The operation of the VEIFY message assembly circuit 9 is stopped. As a result, TEL decreases 9 counter 10 TEL
By repeating the above series of operations every time the value is updated, T
It is possible to check whether El1lIl is used from ``126'' to ``O'' and then display the T E I in use. Among them, the upper limit value of the timer is cei-T.
It can be easily set based on T Recommendation 1.441.

〔Effect of the invention〕

As explained above, according to the present invention, a human being can check the terminal device identifier value used by one or more I8Dh basic access terminal devices already installed on the ISDN basic access S/T interface bus for each terminal device. It can be automatically displayed one after another without checking.

[Brief explanation of drawings]

FIGS. 1 and 2 are diagrams showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...ISDN exchange, 2...ISLJN basic access subscriber line, 3...Basic access network termination device, 4...Basic access subscriber line termination unit,
5... Basic access network termination control unit, 6... Conversion unit, 7... D channel extraction circuit, 8... LL)
VERIFY message transmission selection circuit, 9...If)
VERIFY message assembly circuit, 10...TEL
Subtraction counter, l1...TRI subtraction counter control circuit, 12...TEI extraction circuit, l3...TEI display circuit, 14...18L)N basic access S/'l
'Interface path lower #) line, 15...ISDN basic access S/1' interface bus upper 1c1
6...I81) N basic access 8/T interface bus termination resistor, 17, 18... ISDN basic access terminal device.

Claims (1)

[Claims] A basic access subscriber line termination section having a layer 1 termination function of an ISDN basic access subscriber line, a basic access network termination control section having a layer 1 control function, and converting analog signals of an ISDN basic access S/T interface into digital signals. CCITT Recommendation 1 including the converter to convert and the input terminal device identifier value
．． Identifier verification (IDVERIFY) specified in 441
a message assembly unit that assembles and sends messages;
a message transmission selection unit that sends the verification message on the D channel toward the network termination control unit only when the verification message is assembled; and an initial value “126” for setting the identifier value input to the message assembly unit; a subtraction counter unit that starts subtraction from “0”, a subtraction counter control unit that controls subtraction until the count value of the subtraction counter unit becomes “0”, and an ISDN already installed on the basic access S/T interface bus. IS from terminal device
a D channel extraction unit that extracts D channel data from data on the upstream line of the DN basic access S/T interface bus;
Deciphers the identifier check response (IDCHECKRESPONSE) message specified in CCITT Recommendation 1.441 sent from the already deployed ISDN terminal device on the basic access S/T interface bus from the channel data and extracts the identifier value in this message. An ISDN basic access network terminal device, comprising: an extracting unit that displays the identifier value extracted by the extracting unit; and a display unit that displays the identifier value extracted by the extracting unit.