OAuth 2.0 Linkedin

Hello all,

Can somebody give me basic information how to make auth call with OAuth token?

According to this article:

http://developer.linkedin.com/documents/authentication

In step four you can find this link:

https://api.linkedin.com/v1/people/~?oauth2_access_token=AQXdSP_W41_UPs5ioT_t8HESyODB4FqbkJ8LrV_5mff4gPODzOYR

Characters which are bold are access token.

I use my token to make request but I always retrieve error like this:

<error>
<status>401</status>
<timestamp>1412443491579</timestamp>
<request-id>DK1MXN70XV</request-id><error-code>0</error-code>
<message>Invalid access token.</message>
</error>