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Multifunction subscriber network terminal of comprehensive business digital net

A technology for integrated services and network terminals, applied in the field of user network terminals, can solve the problems of not providing a universal serial bus USB interface and being unable to further access ISDN standard terminals, etc., and achieve the effect of convenient use

Inactive Publication Date: 2003-05-07
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is only a digital phone with extended functions, and it does not integrate the functions of NT1. It still needs to be connected to NT1 when using it. The S / T interface is only used to connect with ISDN lines, and cannot further access various ISDN standard terminals.
And the data port adopts RS232 interface, does not provide universal serial bus USB interface

Method used

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  • Multifunction subscriber network terminal of comprehensive business digital net
  • Multifunction subscriber network terminal of comprehensive business digital net
  • Multifunction subscriber network terminal of comprehensive business digital net

Examples

Experimental program
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Embodiment Construction

[0011] Depend on figure 1 As can be seen, from the hardware point of view, the present invention, the multifunctional user network terminal of the ISDN, comprises:

[0012] Microprocessor control circuit module 2, which completes the interpretation of the D channel three-layer protocol of the ISDN, the processing and conversion of messages and signaling, the processing of the B channel protocol, and the control of the entire user terminal;

[0013] U interface and S / T interface circuit module 1 is connected with microprocessor control circuit module 2, it is the data conversion center on the hardware, completes the conversion from U interface to S / T interface, realizes the physical layer of the integrated service digital network Functions, including activation, synchronization, clock extraction, U interface directly connected to an external ISDN switch, S / T interface can provide up to 128Kbps data transmission rate with two data channels (B channels), and can access various st...

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Abstract

It consists of control circuit module of microprocessor, circuit modules of U interface and S / T interface, memory circuit module, analog circuit interface module, power dissipation management module, data outside interface module and display module. It integrates the function of various ISDN terminals as network terminal, end adapter and digital telephone set to provide U interface which can be connected with outside exchanger directly, standard ISDN interface which can put in digital telephone, videophone and ISDN adapt card, analog telephone interface can put in analog telephone set, fax and modulator-demodulator unit.

Description

(1) Technical field [0001] The invention relates to a user terminal, in particular to a user network terminal of an integrated service digital network (ISDN). (2) Background technology [0002] Integrated Services Digital Network (ISDN) is a technology that effectively and economically utilizes network resources and provides reliable and intelligent services based on the existing telephone network. ISDN is widely used and can provide users with multiple services such as voice, image, and data, and its cost is lower than that of dedicated lines, which is very attractive to users. The current standard ISDN terminal equipment (such as digital telephones, 4 types of fax machines, etc.) is generally connected to a type of network terminal (NT1) through the S / T interface to access the ISDN network, while a large number of existing non-ISDN terminals with considerable price advantages If the equipment (such as analog telephone, type 3 fax machine, modem, etc.) wants to access the ...

Claims

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Application Information

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IPC IPC(8): H04Q11/04
Inventor 彭琳明王波舲
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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