Samsung SCX-6345N/XAA Service Manual page 46

How to use in the field
(Users have to replace the dummy jack by the terminator and connect line can into Line RJ11.)
Note) The terminator has inner connection to path the line to the 2 nd phone
The dummy jack has no inner connection and it just for block Ext RJ11.
3) Dialing Characteristics
Dial Pulse:
Make / Brake Ratio:
Pulse Speed:
Minimum Pause:
Samsung Electronics
Tech Mode Option Feature
40msec/60msec or 33msec/66msec
10 1 PPS
above 30msec
PSTN
RJ11
RJ11
Terminator
System Overview
Service Manual
3-21