IBM System/34 Maintenance Manual page 444

'-..
--,'
.,--
....
30-460 Board Jumpers
Modell Options (Nonswitched)
For nonswitched networks, the modem is always
shipped from the factory with the jumpers installed that
make it a multipoint control station. If the modem is not
to be used as a control station, add or remove the
jumpers as needed. See Table 30-2 for the jumpers
needed for Model 1 options.
Model 2 Options (Switched)
Table 30-3 specifies the jumper configuration needed for
Model 2 options.
30-460
Discrete Wires
Discrete wires are needed to connect the 4800-bps integrated
modem to the communications adapter card. These wires are
described in Figure 30-22.
Multiline Communications Adapter 35
-