1 test. ANSI T1.102 1544 kb/s dual port testing including RJ-48 and Bantam connectors. T1 generation and analysis; ANSI T1.403 SF (D4) and ESF frame structures with robbed bit generation and analysis; FDL signaling channel; T1 frame occupation map; Add / drop of T1 time slots to analog and low rate digital interface. Includes two RJ-48 to Bantam adapters.