Toshiba Strata DK 280 Installation Manual page 258

+ The screen on PC 1 displays, CONNECT
xxxx, where xxxx is the data transmission
speed set by the communications software.
+ At this time, PC 1 and PDIU-DS 204 are
connected as shown by the thick lines above
(PDIU-DS 204 is in the communication mode).
PC 1 is now linked directly to the RS-232 side
of the internal modem and can issue AT
commands to the internal modem, which is
now in the command mode.
+ If Digital/PDIU-DS port 004 is the only DIU
port connected to the modem (Program 20,
LED 03 ON), the Modem LEDs on all DKTs
will be lit.
W
From PC l's keyboard, type ~~~~#70016744700
and press Enter.
+ The internal modem (208) goes off-hook, dials
#7001 to seize the CO line, and then dials the
external modem's telephone number (674-
4700).
+ The external modem rings and auto answers;
the modems handshake and establish
communications.
4 If the modems send result codes, the screen
on PC 1 displays, CONNECT xxxx, where
xxxx is the data transmission speed set by
the communication software.
n At this time PC 1 and PC 2 are connected, as
shown by the thick lines above, to exchange
data (file transfers, type messages, etc.).
W To terminate the call: press the telephone Data
Release button and;
A.
B.
Type +++ from PC2 keyboard.
+ The PC screen displays, OK.
Type ATH from the PC keyboard used in
Step A.
+ PC 1 and PC 2 screens both display, NO
CARRIER.
+ The data call LED on DKT 200 will turn
Off.
External PC to Internal PC Test Call Using AT
Commands Over a Direct CO Line
(see Figure 6-38)
4 RPCI or DIU Programming:
+ Program 20: Port 000. LEDs 01, 02, 05, and
17 ON; all other LEDs OFF.
+ Program 20: Port 004. LEDs 01, 02, 04, and
17 ON; all other LEDs OFF.
+ Program 39: Port 000. Data Call (456) and
Data Release (454) buttons should be
provided.
+ Internal modem: set the following AT
commands: Auto answer (ATS0=1), disable
character echo in the command state (ATEIZI),
modem returns result codes (ATQIZI),
presence of data carrier (AT&Cl), hang up
and assume command state with DTR on-to-
off transition (AT&D2).
+ Settings for PDIU-DS: rear panel switches 1,2
and 4 ON; internal jumpers Pi-P9 set to B-C
position.
H Make sure PC 1 and PC 2 are on-line with a
communications software package and that the
communication parameters of each PC and
communication software package are set to the
same values (data transmission rate, parity, data
bits, stop bits, flow control, etc.)
Note:
If using an RPCI-DI, it may be necessary to
switch the RPCI from the API mode to the
Data Communications Mode before
proceeding with Step 3. To place the RPCI
into the data communications mode from the
PC keyboard: Set NIUII Lock to ON and type
240 while holding the Alt key down (this is
HEX FO). If in the data communication mode
ATCO will switch the RPCI-DI back to the API
,
mode.
H From PC 2's keyboard, type ~~~~5833700 and
press Enter.
The external modem originates the call to
internal modem.
The internal modem rings and auto answers;
the modems handshake and establish
communications. The ready light on the PDIU-
DS turns on.
If the modems send result codes, the PC's
screens display, CONNECT xxxx, where
xxxx is the data transmission speed set by
the communications software.
At this time, PC 2 is connected to PDIU-DS
(204), as shown by the thick lines above
(PDIU-DS 204 is in the command mode). PC
2 can now issue AT commands to PDIU-DS
204.
6-58
January1996