Mitel 1000 Owner's Manual page 14

away from the Mitel 1000 you can do so by having your electrician
run telephone cable and install telephone jacks.
Your electrician will need to refer to the table below when running
phone wires.
Four wires are needed to connect the Desk Phones
Socket Pin Out
A
B
C
D
14
Function RJ11 Pin Out
Speech
Speech
Data
Data
Pin 3
Pin 4
Pin 2
Pin 5