Take about passwords. In Rls 4.5 they are not displayed anymore in PWD command LD 22.
Just keep a print of it in the last release to be able reinstalled if neccessary.
After upgrade, system says :"System is not secure. Please change passwords".
If you don't want to see that warning anymore, you will have to change pwds, included pdt pwd !!
Take care. You can validate FPC to yes. but don't answer yes to PCOMP (password complexity). You will have to enter pwd that follows special rules described in NTPs...
Last, after pwd changing, make an EDD immediatly, or you will not be able to log in for 10/15 minutes.
If you have SigServ and want to log in with Telnet, pwd level1 is required, but failed if EDD is not done.
I also had some problems with QSIG link on 1 PBX only. That Link doesn't want to restart anymore. It have to be debug by adequat staff.
Also, a problem with CLID on another PBX, if PSTN is entering from a tandem node. Still not solved. CLID display twice on the same line...!!!
Good luck