Toa RS-142 - Manual (Page 2)

2.3. When the Option Handset Is Used in Combination
N.C.
Substation interface unit
3P removable terminal plug
(supplied with the Substation
interface unit)
High-impedance speaker
(Impedance: 600 Ω or more)
RS-142
RS-141
2-core shielded cable
2-core shielded cable
2-core shielded cable
Brown (A)
Red (B)
Orange (C)
Yellow (C+)
Green (B+)
Blue (A+)
Blue (COM)
Green (HOT)
Purple (H)
Brown (A)
Red (B)
Orange (C)
Yellow (C+)
Green (B+)
Blue (A+)
Purple (H)
Brown
Red
Orange
To the substation connection terminal
Switch for Call button 1*
Switch for Call button 2*
* Separately prepare this switch.
Orange (N-)
Brown (E+)
Gray (N+)
White (E-)
Note
Cut out unused wires to avoid short-circuiting.