3.3  Rear Panel 
The device's rear panel provides the port interfaces. 
3.3.1  MP-124 Rev. D 
The  MP-124 Rev. D  rear panel is shown below (AC and DC powered models) and 
described in the subsequent table.  
  DC-powered model: 
Figure  3-3: Rear Panel of DC-Powered MP-124 Rev. D Model 
 
Table  3-3: MP-124 Rev. D Rear-Panel Description 
Item #  Label  Component Description 
1 
 
Protective earthing screw (mandatory for all 
installations). Accepts a 6-32 UNC screw. 
2 
100-240 V~ 
50 - 60Hz 0.8A 
AC power supply socket. 
Note: Applicable only to the AC-powered model. 
48V 1.3A 
DC inlet for a DC terminal block. 
Note: Applicable only to the DC-powered model. 
3 
ANALOG FXS 
LINES 1–24 
50-pin Telco connector, providing up to 24 analog lines. 
4 
RS-232 
DB-9-pin male port for serial (RS-232) communication. 
5 
ETHERNET 
RJ-45 port for 10/100Base-TX Ethernet interface.