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Terminal adapter for wideband comprehensive service digital network

A technology for terminal adapters and integrated services, applied in the field of terminal adapters, can solve problems such as inapplicability of ATM cells

Inactive Publication Date: 2003-08-13
ERICSSON-LG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] According to the terminal adapter described in the above prior art for BISDN is not suitable for various types of ATM cells

Method used

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  • Terminal adapter for wideband comprehensive service digital network
  • Terminal adapter for wideband comprehensive service digital network
  • Terminal adapter for wideband comprehensive service digital network

Examples

Experimental program
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Embodiment Construction

[0020] refer to figure 2 , which shows a terminal adapter according to an embodiment of the present invention. Such as figure 2 As shown, the terminal adapter includes microprocessor (1), memory (2), peripheral circuit (4), LAN interface (5), frame relay interface (6), packet memory (7), ATMAAL3 / 4, 5 layers (8), control memory (9), physical layer (10), constant bit rate interfaces (12, 13, 14) for handling constant bit rate data, and multiplexer / demultiplexer (15) .

[0021] A multiplexer / demultiplexer (15) is connected to the physical layer (10). from S B In case a point sends data to an R point, the multiplexer / demultiplexer (15) works as a demultiplexer. That is to say, the multiplexer / demultiplexer (15) determines whether the type of the ATM cell received from the physical layer (10) is a constant bit rate ATM cell or a variable bit rate ATM cell, and then selects one with The corresponding output path of the received ATM cell. Conversely, from point R to S B The...

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Abstract

The invention provides a terminal adapter used for BISDN, which comprises ATMAAL 3 / 4, 5 layers used to convert the data of a variable bit rate into ATM cells; a plurality of constant bit rate interfaces used to convert the data of a constant bit rate into ATM cells, respectively; a physical layer used to convert physical layer data into ATM cells; and a multiplexer / demultiplexer. The terminal adapter provided by the invention is applicable for both variable bit rate ATM cells and constant bit rate ATM cells connecting an R point with an R point.

Description

technical field [0001] The present invention relates to a terminal adapter for a broadband integrated services digital network, in particular to a terminal adapter applicable to both variable bit rate ATM (Asynchronous Transfer Mode) cells and constant bit rate ATM cells. Background technique [0002] In ISDN (Integrated Services Digital Network), all communication data is digitized and sent and received via a high-speed single communication network. In existing communication systems, a separate communication network is required for each communication system such as a telephone or a computer. In contrast, ISDN uses a high-speed single digital communication network for all services. [0003] BISDN (Broadband Integrated Services Digital Network) is an ISDN extended to broadband signals based on ISDN technology. In BISDN, narrowband signals such as telephone, facsimile, and internet services and broadband signals such as video signals of conference images and videophones are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/433H04L12/70H04Q11/00H04Q11/04
CPCH04L2012/5653H04L2012/5672H04L2012/561H04L2012/5615H04Q11/0478H04L2012/5651H04L12/433
Inventor 李明奎
Owner ERICSSON-LG