The figure below shows the GX6616 board connectors and jumpers followed by their description:
GX6616 Connectors and Jumpers
JP6, JP7, JP9 and JP10 Jumper Headers: These are four 32 pins jumper headers that are used to connect columns of adjacent switching groups. JP6 is used for connecting columns between groups A and B, JP7 between groups B and C, JP9 between groups D and E and JP10 between groups E and F.
JP11-JP15 Jumper Headers: These are five 4 pins jumper headers that are used to connect rows of adjacent switching groups. JP11 is used for connecting rows between groups A and B, JP12 between groups B and C, JP13 between groups C and F, JP14 between groups D and E and JP15 between groups E and F.
Note:
Not all the jumpers in a subset need to be installed. Installing some of the jumpers will share these columns across the groups.
The figure below shows jumper headers for groups A to C with JP6, JP7, JP11, JP12 and JP13.
GX6616 Relay Jumper Configuration
JP1- Guard Ground: The JP4 jumper is used to connect the relay ground layer to ground.