| 摘要 |
The present invention provides a method and a system for improving communication reliability. In the present invention, a first side of an Automated Main Distribution Frame (AMDF) connects directly with an access layer device and a second side of the AMDF connects directly with a user terminal; wherein in normal working status, the access layer device is adapted to communicate with the user terminal through a primary working link via the AMDF; and when the primary working link is in failure, the access layer device is adapted to communicate with the user terminal through a standby working link via the AMDF. Using the scheme above, port backup function of the line card and the line card backup function are implemented, and the intermitting time for serving is shortened, thus the system reliability is improved.
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