Template replacing method in asymmetric user line

Abstract

The invention discloses a method for replacing an asymmetric subscriber line template. The asymmetric subscriber line includes a client modem, a central office modem, and an embedded operation channel for interaction between the client modem and the central office modem; the central office modem includes a plurality of templates, and the method includes the following steps: requesting In the step, the modem at the client side sends an instruction to replace the template to the modem at the central office, and the template replacement instruction includes the template identification information that the modem at the client side needs to replace the template; in the replacement step, the modem at the central office performs template replacement, and feeds back the replacement failure instruction to the modem at the client side or Replace the successful command. The asymmetric subscriber line template replacement method of the present invention realizes the template replacement initiated by the user end.

Description

technical field [0001] The invention relates to an asymmetrical subscriber line (ADSL, Asymetric Digital Subscriber Line), in particular to a template replacement method in an asymmetrical subscriber line. Background technique [0002] ADSL uses frequency division multiplexing technology (FDM, Frequency Division Multiplexing) or echo cancellation technology (Echo Cancellation) to separate the uplink and downlink channels through asymmetric transmission to reduce the impact of crosstalk, thereby achieving high-speed signal transmission. [0003] In order to utilize multiple channels, the ADSL modem uses the bandwidth of the telephone line utilized by the above two methods. The FDM method divides the frequency band into an uplink part and a downlink part. The downlink channel is time division multiplexed (Time Division Multiplexing) into one or more high-speed channels and low-speed channels; and the uplink channel is also multiplexed into corresponding low-speed channels. In...

AI Technical Summary

Problems solved by technology

[0014] In the prior art, the replacement of the template is initiated by the central office modem. Since the user-side modem has no other commands that can be actively initiated, it cannot actively replace the template. In this way, the function of the user-side modem is simple and the method of replacing the template is single, which is not flexible enough.

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