Contec VPC-1600, User Manual, Page: 39 / 115

3. Hardware setup
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VPC-1600 User’s Manual
COM2 RI mode setting : JP3
This enables the setting of the RI function of the COM2 port. RI is set in the factory settings.
Table 3.5 COM2 RI setting
JP3 Function
+5V
(1-3 Short)
RI Signal
(Factory default
setting)
+12V
(3-5 Short)
COM1 RI mode setting : JP4
This enables the setting of the RI function of the COM1 port. RI is set in the factory settings.
Table 3.6 COM1 RI setting
JP4 Function
+5V
(1-3 Short)
RI Signal
(Factory default
setting)
+12V
(3-5 Short)