From the RLS 25 books has anyone tried it?
Insert the NTRB21 TMDI circuit card into card slot 1-9 in the Main cabinet, or in slots 11-19, 21-29, 31-39, 41-49 of the first, second, third, and fourth Expansion cabinets, respectively.
Insert the NTAK09 circuit card into slots 1-9 in the Main cabinet, or in slots 11-19, 21-29, 31-39, 41-49 of the first, second, third, and fourth IP Expansion cabinets, respectively.