template specialization with C linkage

Hi there!

I'm trying to compile the rtphello.cpp but eclipse
throws a lot of error messages like

"template with C linkage"
or
"template specialization with C linkage" (can't post the original, because it's German)

As I found out it probably has something to do with
"extern C { }"
but I don't know how to fix this problem.

Thanks a lot in advance.

Best regards 
Antonio
-- 
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