Customer has nec UX5000 system that is being replaced with SL2100. Customer has 4 CO Trunks. Currently UX5000 inmail answers call and offers customer 2 choices (1 for restaurant, 2 for bakery). If I press 1 for restaurant the call will ring on the first of 4 common intercom keys appearances across all phones. I go to the phone on the UX5000 and press CHECK and buttons 1 through 4 are ICM 401, 402, 403 and 404. If I press 2 for bakery the call will rings on the first of 4 common intercoms across all phones Buttons 7 - 10 are ICM 501 - 504. If you press one of these keys you get directly to a trunk group. But the ICMs buttons can appear like a trunk on hold or in use across all phones. I do not have access to the UX5000 system.

Customer wants to duplicate this setup for ease of transition. If not possible what can I do.