e/E and M signaling

Information
has gloss	eng: E&M is a type of supervisory line signaling that uses DC signals on separate leads, called the "E" lead and "M" lead, traditionally used in the telecommunications industry between telephone switches.
lexicalization	eng: E and M signaling
instance of	c/Telephony signals

Meaning
Russian
lexicalization	rus: E&M

Media
media:img	E and M signaling 8 Wire.png