What is called reverse link?

[VincentWilliam]

Often hear everyone in the q&a BBS said in reverse link how important, but I confused, what is backward link?
See above this line of content, "answer BBS" this a few word links to the [Only Registered users can see links . Click Here To Register...]. The link we called direct link.
For answer BBS speaking, the link is its reverse link.
Simple summed up as follows:
A web page with A link to web page B, then page on A links page B is the reverse link.
SEO of reverse link and that import link (Backlinks), external links. But the reverse link summary including in station and stood outside the import link.

[VincentWilliam]

the reverse link summary including in station and stood outside the import link.
the link is its reverse link

[jenny123]

In radio communications, the link from a mobile user to a fixed base station. If the link includes a communications relay satellite, the reverse link will consist of both an uplink (mobile station to satellite) and a downlink (satellite to base station)
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[jenny123]

In radio communications, the link from a mobile user to a fixed base station. If the link includes a communications relay satellite, the reverse link will consist of both an uplink (mobile station to satellite) and a downlink (satellite to base station)
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