HI-PRO 280
Pagina
17
Preparing the connection of ST 600 Personal Phone system telephones, RJ11
sockets must be provided, and wiring must be made with a 2-pair cable.
Plug RJ11 6/4
ST 600
Pin 1
S +
Pin 2
Numbered
terminal
Pin 3
Pin 4
S -
When a system telephone is connected to the Hi-Pro terminal board, the first
pair (Pin 2-3) must be connected to the terminal marked with the number of the
extension to be connected; the second pair (Pin 1-4, power supply and signals
terminals) must be connected to the “S+/S-” terminals, paying attention on the
polarity. Specifically “S1+/S1-“ terminals are intended to extensions 1~6, while
“S2+/S2-“ terminals are intended to extensions 7~12).
