Type iv e&m signaling -4 – Zhone Technologies IMACS-200 User Manual
Page 164
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7-4
E&M Ports
Model No.
Running Head
Type IV E&M is arranged exactly like Type II E&M, except that a mechanical relay is used
for the M relay as in Type I E&M, see Figure 7-3.
Figure 7-3.Type IV E&M Signaling
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