A method for solving non-symmetric digital user line modulation and demodulation software loss

Abstract

The invention discloses a method for solving the loss of ADSL MODEM software. The method is as follows: the flash storage area in the MODEM is divided into three areas: the boot sector, the application program sector and the general data sector, and then the MODEM to be upgraded After the software structure of the upgrade package is optimized, write the optimized data into the above three areas respectively. When the device needs to be completely upgraded, set the boot sector and application sector to readable and writable states to perform software upgrades. After the upgrade process is over, it will return to the default read-only state; when the device needs to be upgraded generally, set the application sector to readable and writable state, and then restore the sector to the default read-only state after the application upgrade is completed Status; for general data sectors, their read and write attributes are set to readable and writable to ensure normal read and write operations of the device. The invention reduces the risk of losing the MODEM startup software and improves the reliability of the equipment.

Description

technical field [0001] The invention relates to modem (MODEM) technology in the communication field, in particular to a method for solving the loss of Asymmetric Digital Subscriber Line (ADSL) MODEM software. Background technique [0002] At present, with the rapid development of Internet broadband access, ADSL users have increased dramatically, and the number of ADSL MODEMs used is also increasing. Because the user's ADSL MODEM is widely used, it is not conducive to centralized management. Although the remote network management technology of ADSL MODEM is gradually being paid attention to by telecom operators, the remote network management technology is not mature enough, especially when the ADSL MODEM fails, etc. , the current network management technology can't solve it, and among these failures, the loss of ADSL MODEM software is relatively common in actual use. [0003] The loss of ADSL MODEM software is mostly caused by a sudden power failure when the flash memory (fl...

AI Technical Summary

Problems solved by technology

Since the user does not know about the operation of saving the configuration, it is completely done automatically by the ADSL MODEM. If the user cuts off the power at this time, the possibility of software loss is very high, especially in some units of the flash storage area. In the case of larger data size and slower read / write speed, the probability of software loss is very high. Even if some manufacturers choose a flash storage area with smaller erase / write sectors and faster read / write speed, it can only be Reduce the probability of such failures, but cannot avoid the occurrence of ADSL MODEM software loss

[0004] When the ADSL MODEM has a software loss failure, it cannot work normally, and the ADSL MODEM often appears to be in a state that cannot be managed at all

At this time, if you want to restore the ADSL MODEM to normal, you must re-update the software. What's worse, once this happens, you often cannot perform normal upgrade operations on the ADSL MODEM. Generally, you need to open the shell of the device and use a special upgrade tool. Forcibly upgrade the ADSL MODEM equipment through the parallel port or serial port, which brings great inconvenience to the normal use and maintenance of the equipment

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