Black Box MD1641A Manuale Utente
136
SERIES II INTELLIGENT DATA/FAX MODEMS
Command mode. This is done by setting DIP-Switch #15 DOWN. With
DIP-Switch #15 in the UP position, both CD and DSR will be either on
or off, depending on the On-Line status.
DIP-Switch #15 in the UP position, both CD and DSR will be either on
or off, depending on the On-Line status.
CD and DSR normal
=
Switch #15 UP
CD and DSR forced On =
Switch #15 DOWN
Factory Default Setting
=
UP
Switch #16
2 Wire/4 Wire Operation
(Asynchronous/Synchronous Mode)
2 Wire/4 Wire Operation
(Asynchronous/Synchronous Mode)
The Series II Modem works over either 2-wire or 4-wire leased lines. To
select 4-wire operation, place Switch #16 DOWN (Default); and to select
2-wire operation, place Switch #16 UP.
select 4-wire operation, place Switch #16 DOWN (Default); and to select
2-wire operation, place Switch #16 UP.
2-Wire Leased Line
=
Switch #16 UP
4-Wire Leased Line
=
Switch #16 DOWN
Factory Default Setting
=
DOWN
9.3 Speaker Volume Control
You can adjust the volume of the Series II Modem’s phone-line monitor
speaker with a volume control knob, located on the back of the modem
next to the RS232C connector (see Figure 9-1 for location). Turn the
knob clockwise to increase the modem's volume and counterclockwise
to decrease speaker volume. See Speaker Control Command (
speaker with a volume control knob, located on the back of the modem
next to the RS232C connector (see Figure 9-1 for location). Turn the
knob clockwise to increase the modem's volume and counterclockwise
to decrease speaker volume. See Speaker Control Command (
M
) in
Section 5.4.6
.