[USR-TC] how do you split two modem banks

I have a TC1000 with a DUAL PRI and 6 QUAD MODEM cards (24 modems) 1 ISDN-PRI with 2 telephone numbers 555-555-1111 555-555-2222 I would like to split these into two banks bank_1 = 12 modems bank_2 = 11 modems When 555-1111 is dialed, I would like bank_1 to answer when 555-2222 is dialed, I would like bank_2 to answer Could anyone offer any assistance? thanks in advance, dave