NT8D15 E&M Trunk card Page 623 of 894

Figure 141

E&M Type I signaling

 

E&M trunk card

External signaling circuit

Ð 48V

E

E

 

 

Ð 48V

M

M

 

 

 

 

553-6258

Circuit Card Description and Installation

Page 623
Image 623
Nortel Networks 553-3001-211 manual Type I signaling