4 line n+1 backup and its detecting circuit

Abstract

The present invention discloses four-line n + 1 backing up and test circuit, referring to public telephone switching network technology. Said circuit includes twisted pair line led out from office terminal, its pair number being at least four pairs, wherein first pair and second pair twisted pair line binding connection and simultaneously parallel transmitting broadband signal, merging by multiple wire pair receiving managing unit then transmitting to user terminal; one pair of first or second pair twisted pair line for transmitting narrowband signal; the third pair and fourth pair twisted pair line respectively being the spare line of first pair and second pair twisted pair line. The present invention uses two pair twisted pair line binding in ADSL or VDSL service to make up-down going transmission rate becoming original 2 times, satisfying trade user's requirement.

Description

[technical field] [0001] The invention relates to public telephone switching network technology, in particular to a 4-line N+1 backup and a test circuit thereof. [Background technique] [0002] At present, there are many methods for copying packet data and providing interactive broadband services on the public telephone exchange network. These methods include establishing a new wireless and satellite network system, which is technically feasible, but the cost is too high. A better method is to improve the working ability of the copper twisted pair analog local loop on the existing basis, and provide backward compatibility with the existing voice telephone equipment. [0003] Many broadband services are obviously asymmetrical, such as video-on-demand or Internet web browsing. That is to say, the uplink traffic from the user terminal PC is much smaller than the downlink traffic transmitted to the user terminal PC or from the web server site. In this case, it is very reasonab...

AI Technical Summary

Problems solved by technology

The problem to be solved is: the port backup cannot affect the narrowband PSTN service, and the user's phone number is required to remain unchanged during the port backup, especially when the POTS service and xDSL service are provided by different operators, it is necessary to ensure that the connection relationship of the PSTN cannot be changed

[0009] Existing single boards that provide ADSL services realize N+1 backup and test functions are usually implemented on the basis of one line pair by using an external relay matrix. There is no existing technology for N+1 backup and test functions of more than one line pair. provide the solution

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