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PCM-3370 User’s Manual 16
2.4.3 COM1 and COM2 RI Input Select (JP4, JP5)
There is Ring input select jumper at COM1 and COM2.
2.5 SDRAM installation
There are one on-board 144-pin SODIMM socket.
Table 2.4: COM1 and COM2 RI Input Select (JP4, JP5)
JP4 COM1 RI Input Select
Pin Function
1-2 RI *
2-3 VCC
Table 2.5: COM1 and COM2 RI Input Select (JP4, JP5)
JP5 COM2 RI Input Select
Pin Function
1-2 RI *
2-3 VCC