Toshiba Strata DK 280 Installation Manual page 247

HAYES-COMPATIBLE SMART MODEM
(FUNCTIONS LIKE A DCE)
PDIU-DS
(CONFIGURED IN THE "CONNECT
TO MODEM" MODE, Pl w P9 = B-C, .
SO IT FUNCTIONS LIKE A DTE)
MODEM PDIU-DS
PIN# 1 2 3 4 5 6 7 6 20 22
PIN# 1 2 3 4 5 6 7 6 20 22
NAME FG TD RD RTS CTS DSR SG DCD DTR RI NAME FG TD RD RTS CTS DSR SG DCD DTR RI
Rear view of modem DB25 connector Rear view of PDIU-DS DB25, connector
The following commands
should be sent to the modem:
ATSO=l : Auto Answer
ATEO: Disable character echo in
command state
ATQO: Modem returns result codes
AT&Cl : Track presence of data carrier
AT&D2: Hang up and assume
command state with DIR on
to off transition
7
6
-.4
5
22
SG 7
@Pen)
DSR 6 .-
RTS 4
CTS
5
RI 22
(50 ft max, 24 AWG; customer
supplied)
For PDIU-DS port:
DK280-Program 20: LEDs 01,02',
04, 17
"On".
All other LEDs "Off".
Note:
1. In Program 20, for the PDIU-DS port, LED 02 should
be set "ON" after the AT commands shown above are
sent to the modem.
General Notes:
l
Modem receives data on pin 2 (TO) and transmits
data on pin 3 (RD).
.
The PDIU-DS must be in the connect to modem
mode (Pl - P9 strapped B-C) so that it transmits data
on pin 2 (TO) and receives data on pin 3 (RD).
l
The above cable modifications, modem AT
commands, and Program 20 settings are required for
proper call release when modems disconnect. With
this configuration, the PDIU-DS "READY" light will
not light until modems at both ends establish
communication (DCD is detected).
l
See Subsection 6.9.6, paragraph 3 for more details.
DK0331
I
Figure 6-29
DK280 PDIU-DS to Hayes-Type Smart Modem, RS-232 Connector/Cable Connections
January 1996
6-47