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––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Remote Modem Connection to Modem Pool
135
Remote Modem Connection to Modem Pool
Communication Setup
♦ DIU initialization string: use default values. Use default values for direct modem init. If
using a fax/modem, you may have to include &Q6 or &K0 into the modem initialization
string to turn off data compression.
♦ Direct modem init should be: default
Customer Dialer Setup
♦ DIU string: (nothing)
♦ Modem string: ATDTXXXXXX.
(XXXXXX is the external modem CO line number)
♦ After connect string: AT~~~ATDDYYY~~~
(YYY is the intercom number of the PDIU-DS connected to the TTY Port. (~~~ must be
used to send carriage return signals.) The DKAdmin/DKBackup dialer sends this string to
connect the PDIU-DS (XXX) to PDIU-D (YYY) when it detects (connect 1200) that the
remote modem has connected to the external modem.
PDKU
PDKU
PDIU-DS (YYY)
PPTC25MDM
External
Modem Pool
Remote
Modem
1
CO Line
Standard PC / Modem
Cable
DK Backup/Admin
Personal Computer
Public
Telephone
Network
PDIU-DS (XXX)
TTY
Port
RSSU, RSIU,TSIU,
WSIU or RSIS
2
CO LINE
3-pair Modular Cord
Customer Strata DK
See Figure A-7 for PDIU-DS
modem pool configuration
(SW3 – TTY Position)
3
4
Notes
1. External or Built-in to PC.
2. Program 03 Code 41 for RSSU, PIOU, PIOU(S) slot.
Program 03, Code 49 for RSIU Slot 11.
Program 76-1, 76-2 for RSIU, RSIS, TSIU, or WISU TTY Port setup.
3. Program 03 Code 62 or 64 for PDKU slot.
4. PDIU-DS Jumper plugs (P1-P9) must be set to the B-C position when connected to the TTY port.
0922
Turn off data compression.
PIOU, PIOUS
2
(Telephone type, cross-pinned)
(yellow)
External modem must have the following AT
commands set:
(ATS0 = 1, ATB1_E0_L2_M1_Q1_V1_X4_Y0_&C1_&D2_&G0)
Turn off data compression.
Figure 20 DKAdmin/DKBackup PC Remote Modem Connected to Strata DK Modem Pool – Then Auto
Dial Modem Pool DIU to Strata DK DIU/TTY Port.