MediaPack 
Analog Fast Track Guide  16  Document #: LTRT-59805 
Cable  Cabling Procedure 
RS-232 serial 
cable 
Using a standard RS-232 straight cable (not a cross-over cable) with DB-9 connectors, 
connect the MP-124 RS-232 port to either COM1 or COM2 RS-232 communication port 
on your PC. The required connector pinouts and gender are shown in Figure  2-15. 
AC Power cable 
Connect the MP-124 power socket to the mains. 
 
 
MP-124 Safety Notice 
To protect against electrical shock and fire, use a 26 AWG min wire to connect analog 
FXS lines to the 50-pin Telco connector. 
Figure  2-12: RJ-45 Ethernet Connector Pinouts 
1 2 3 4 5 6 7 8
RJ-45 Connector and Pinout
4, 5, 7, 8
not
connected
1 - Tx+
2 - Tx-
3 - Rx+
6 - Rx-
 
Figure  2-13: 50-pin Telco Connector (MP-124/FXS only) 
125
26
50
Pin Numbers
 
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