I need to figure out how to block incoming calls from one specific phone number on our NEC Electra Elite IPK II system. We have someone who has decided to call in and harass our staff constantly and need to block it. Any suggestions would be appreciated.

There might be a way, I have done it on the SV9100 not sure if it will work on the IPK II.
If you are an end user with no programming experience, this will be way over your head.

If you have an idea it would be appreciated. I am a mid-level user (and what counts for the system admin here) and am somewhat familiar with the system.