Tadiran Telecom FlexSet 280D - Flexset 280 Series with PEX - External Connections; Rear View

Product Features and Model Designations i FlexSet 120/280 User Guide
LINE
DC
1st Handset
RJ-45 jack for optional
FlexSet 40B
Right
side
view
Rear view
Power Supply
(24 to 48 VDC)
RJ-11 jack
telephone line to
Coral system
Connection for
second handset
or monitor audio
Connection to
handset or
handsfree headset
2nd Handset
PEX
PEX
Bottom view
FlexSet
280,280D,280D-Z
FlexSet 280 Series with PEX – External Connections