AT&T Release 2.0 manual 54Installing the Modules

Installing the Control Unit

S w i t c h e s 1 through 5 control Port 4

( E & M

u n p r o t e c t e d )

S w i t c h e s 6 through 10 control

Port 3

( E & M

protected)

S w i t c h e s

1 through 5 c o n t r o l Port 2 ( E & M

simplex)

S w i t c h e s 6 through 10

c o n t r o l Port 1 (E&M

protected)

Figure 2-16. Setting the 400EM Module DIP Switches for E&M Signaling

Types 1C and 5

2-54Installing the Modules