Sun Microsystems SPARCclassic Service Manual page 155

Figure 11–21 Default SPARCstation LX ISDN Jumper Settings
The SPARCstation LX system board is delivered with the jumpers set for termination
on the system board. For more information about setting these jumpers, see the Sun
ISDN-BRI/SBI Hardware Configuration Guide.
SPARCstation LX ISDN Jumper Settings
TABLE 11–3
Address Jumper Pins
J1801 1, 2
2, 3
1, 2, 3
J1802 1, 2
2, 3
1, 2, 3
Setting Description
Jumpered ISDN termination is on the system
board (default).
Jumpered ISDN termination is assumed set at
the ISDN jack in the wall.
Not jumpered ISDN termination is assumed set at
the ISDN jack in the wall.
Jumpered ISDN termination is on the system
board (default).
Jumpered ISDN termination is assumed set at
the ISDN jack in the wall.
Not jumpered ISDN termination is assumed set at
the ISDN jack in the wall.
Main Logic Board and Component Replacement
141