I have DSX 80 system with 22 button phones. We have 24 incoming lines. We are oK with the first 22 lines as they are assigned to buttons. Now, if somebody calls on 23rd or 24th line and we put them ON HOLD, we do not know how to pick those lines up.
I am sure there is a way.
We figured there is a way to reach line 23 by pressing "Intercom"+123, however, when the line is on hold, and we try to reach that line, it gives a busy signal.