IBM System/34 Maintenance Manual page 459

30-850 Card Jumpers
The autocall adapter cards are the same as the
EIA/CCITT cards. The cards have 10 jumper locations
(see Figure 30-35), but none of the jumpers is needed.
However, you must connect one of the following board
jumpers to supply the digit signal (NB4):
l
A
B
'C
o
E
F
Line 1 A-B3L2G08 to A-B3V2D13
Line 2 A-B3M2G08 to A-B3V3D13
Line 3 A-B3L4G08 to A-B3V4D13
Line 4 A-B3M4G08 to A-B3V5D13
• A •
• A •
Line 1
Line 2
Line 3
Line 4
• C •
A·83L2
A·83M2
A-83L4
A·83M4
• 8 •
eo_e.
eAe
• A •
Not used or missing (four locations)
Not used
Not used
Not used
Not used
Not used
G Not used
J
Note: The communications adapter card switch settings for
this line must have switch 3 in the On position.
Figure 30-35. Autocall Adapter Card Jumpers
50 30-850