Black Box 32144 Manual page 146

MODEM 32144
DC1/DC2. This option inserts
the control characters ^R and ^Q
into the data stream to stop and
start/restart the flow of data from
a device. (DC1/DC2 is also called
software, logical, or in-band flow
control.)
DC1/DC3 (X-ON/X-OFF). This
is the most common method of
flow control. It inserts the control
characters ^S and ^Q into the data
stream to stop (^S) and start/
restart (^Q) the flow of data.
(DC1/DC3 is also called software,
logical, or in-band flow control.)
NOTE
When using the modem for
binary file transfer, in-band
flow control (flow control
using control characters)
must be disabled. In this
case, use hardware flow
control or, as an alternative,
lower the DTE speed to
reduce the possibility of
overflow.
DCE-DTE Flow Control
Hayes, V.25 bis, Dumb, Leased-line
modes (except V.33)
All information given above
under DTE-DCE Flow Control also
applies to the DCE-DTE (modem
to terminal) flow control option,
except that the CTS, Clear to Send
signal, is used to control DTE-DCE
data flow.
54
DTE Pass-through Flow Control
Hayes, V.25 bis, Dumb, Leased-line
modes (except V.33)
Pass-through Flow Control affects
DTE-DCE flow control only. This
option determines whether flow-
control characters received from
the local DTE will be passed to the
remote modem (if control
characters are used for flow
control).
ENABLE. Flow control characters
are passed to the remote end of the
communication connection after
the modem acts upon them.
DISABLE. Flow control
characters are not passed.
3.7 Address
All modes
The address screen allows you to
set the address of the modem at
your location. An address may be
useful if the modem will be used
in a rack enclosure or in a network
environment.
The available address numbers
are 000,000 through 999,999. On
the ADDRESS screen, the three
digits to the right of the comma are
the unit address number. The three
digits to the left are the group
address number. To change the
address, use the right and left
arrow pushbuttons to go to the