E1 test. ITU-T G.703 2048 kb/s dual port testing including BNC and RJ48 connectors, E1 generation and analysis; ITU-T G.704 frame structure with or without CRC and with or without CAS; CAS ABCD bits generation and analysis; FAS / NFAS analysis; E1 frame occupation map; add / drop of E1 time slots to analog and low rate digital interface.
