Tvheadend

I understand that if I have a cline I need to use Oscam locally and to connect TVH to Oscam in order to work (cline->Oscam->TVH).
But what if I receive the cline from my friend who is using Oscam? Can I try to bypass Oscam in order to add the cline to TVH and see if it works? I'm not sure what kind of a protocol my friend is using in his Oscam config.

If not, and I need Oscam, can you please tell me a link where Oscam setup or the whole process is described how to make this working. Basic config I assume.
cline I have, Oscam config I need, TVH setup to connect to Oscam. I guess it is an easy configuration, nothing special here.

Thanks!