elmeg C46e Description And Installation page 46

2.5.4 Interfacing of call signaling at the doorbell
system
Figure 32 shows the connection of the TFE module to an existing doorbell
system. When the doorbell is rung, the call is signaled at all terminals entered
in the TFE call mode. You can connect up to three (3) doorbell buttons and
assign a TFE call mode to each button. In this manner, when the doorbell button
is pressed, only the phones assigned to that button will ring. If there are several
doorbell buttons, the button pressed last will be signaled. Signaling of the
button pressed first is terminated.
Do o r b ell
Fig. 31: Doorbell system
TFE m o d ule
B ell ring ing b utto n
42
B ell transfo rm er