Zhone Technologies IMACS-200 - Manual (Page 162)

7-2 E&M Ports
Model No. Running Head
Type I signalling is achieved by connecting a ground on the SG lead. Type I E&M signalling
is then achieved by operating the E and M leads to achieve off-hook and on-hook
signals.Figure 7-1 illustrates a typical Type I interface.
Figure 7-1.Type I E&M Signaling
Note: For Type I signaling, there should be no connection on the SB lead