I have seen the XXX-PCP on many F1's for ftth. What it means is another matter but the fact is it really doesn't matter at all. You even see it on F1's fed from a remote in the form of XXX-RCP and others. Its a ficticious F1 assignment for the field and has some meaning to assignment clerks. XXX-ENC is what you will see for encap.
I've seen FTTH with FCXXXX assignement if I'm not mistaken.
