E1: G.732 or G.704
T1: D4 SF or D4ESF

E1: 2.048 Mbps
T1: 1.544 Mbps

E1: +/- 30 ppm internal
E1: +/- 100 ppm external
T1: +/- 30 ppm internal
T1: +/- 150 ppm external

E1: 120 ohm balanced
E1: 75 ohm unbalanced
T1: 100 ohm balanced
Analog: 2500 Ohms

E1: AMI or HDB3
T1: AMI or B8ZS

E1: Loss of carrier signal, multi-frame carrier signal, sync; alarm indication signal (AIS); receipt of remote alarm; receipt of multi-frame remote alarm

T1: Loss of carrier signal; loss of frame; receipt of alarm indication signal (AIS); receipt of remote alarm

E1/T1: signaling state report, digit report