Hello I have a CIX670 system, and 2 phones (DKT-2020S) would like to have intercom buttons set-up on their keysets that intercom into individual extensions, with the intercom going through even if the person at the other extension is on the phone.

For example:
Secretary at x353 needs the ability to intercom x210 and x250.

How do I set this up using the eManager v5.2 software?

Also, on a question regarding the intercom, is there a way to have some sort of tone or beep played or a display light shown on the receiving extension that intercom is active, that way eavesdropping is not an issue?

Thank you kindly in advance.