Table of Contents
Advertisement
Advanced features
The 106 (CTS) and 107 (DSR) circuits.
This is indication circuits from modem to DTE.
106 (CTS-Clear to send). Normally indicate that DTE may start
sending data.
107 (DSR-Data Set Ready). Normally indicate that the modem
has connected to line and started the handshake with remote
modem.
106 and 107 operation in command mode and during
connection
Use the following table when the central site computer requires
107 and 106 to be OFF at certain times. This table shows the
&S settings and the equivalent setup from front/display.
cane
{Command __|
Description
orrt
;
AT&SOptE
107 and 106 always ON
ption
as
OPT2
AT&S1 gm
107 are turned ON according to
(Option2)
CCITT.
CTS always on
OPT3
AT&S2 ge
107 are OFF in command mode. and
(Option3)
oes
2
+ s ] will turn ON at the same time as
modem carrier 106 is ON in
command mode, will be OFF during
connection, and turns ON at the
}
:
_
i '
| same time as modem carrier
OPT4(Optio | AT&S3pral
DSR and CTS are OFF until modem
n4)
oe
a
carrier is detected.
106 controiled by 107 in data mode:
106 may be controlled by 107 in data mode. This function is
mostly used in synchronous half duplex communication
(Simulated half duplex) The table below will show the set up
which may be done with command or from display at front.
oo
Command
Description
FOLLOW
— AT&ROG*S|
When the modem detects an OFF to
ON transition on RTS, CTS will go
ON after a delay determined by
register $26. If the modem detects
ON to OFF on RTS, CTS will go OFF
immediately
CTS-FIXED
ATER el
CTS is On in data mode.
12-14
LZTR104006
R1.00
Zat 14.4/14.4-7 and 19.2/19.2-7
Advertisement
Table of Contents
