Toshiba DK 16, DK8 manual Program 22/33, Modem Setup Recommendations, Disassembling the PDIU-DS

INSTALLATION-PERIPHERALS

SECTION 100-816-207

MARCH 1993

access codes to place outgoing trunk calls.

•LED 06: Should be ON for DIUs con- nected to modems. With this feature turned on, the DIU will send a one-sec- ond release signal on the DTR to drop the modem when the data user presses the Data Release button on the telephone.

•LEDs 17 ~ 20: Data security groups can be used to allow or deny digital tele- phones equipped with PDIU-DIs access to the PDIU-DS ports connected to a modem. DIU stations can only make data calls to DIUs in the same data

security group.

Program 21

•For each PDIU-DS/modem pair, assign the digital, QSTU, KSTU, and PSTU (or

PESU) ports that will be connected to the PDIU-DS and modem, respectively.

Program 22/33

•If more than one modem/PDIU-DS pair is configured as a system modem pool, the PDIU-DSs should be set to hunt each other in Program 22. The modem QSTU,

PSTU, KSTU, or PESU ports should be set to hunt each other in Program 33.

Program 31

•LED 18 should be turned on for all QSTU, KSTU, PESU or PSTU station ports that are connected to modems. This provides data security by preventing executive or privacy override of modem calls.

10.63Modem Setup Recommendations

1)Always change the escape sequence of the telephone PDIU-DI from default (+++) to some other ASCII character (ATS2=XX command to PDIU-DI). This allows placing the PDIU-DI or modem into the command mode selec- tively. The ATS2=XX command should be in the modem initialization command of the com- munication software of the PC connected to the PDIU-DI (XX = new ASCII Escape charac- ter). This will ensure that the new Escape

sequence is restored if the telephone or PDIU-DI is unplugged.

2)Set the modem to recognize the DTR signal to disconnect (AT&D2 command to modem).

3)When the modem tracks the DCD signal, issue AT&C1 command to modem.

10.70PDIU-DS Disassembly and Assembly

10.71To set the jumper plugs (P1 ~ P9) on the PCB inside the PDIU-DS for DCE or DTE operation, the PDIU-DS must be disassembled. Disassemble the PDIU-DS in accordance with the following steps:

10.72Disassembling the PDIU-DS

1)Remove the four screws securing the bottom panel to the rest of the unit (see Figure 7-33). These screws are not captive; so place to- gether where they can be easily accessed.

2)Remove the bottom panel.

3)Remove the PCB inside the PDIU-DS by lifting the back panel from its side grooves.

4)Turn the PCB over and set the jumper plugs (P1 ~ P9) as follows:

•If the PDIU-DS is connected to a DTE, set the plugs to the “A-B” position.

•If the PDIU-DS is connected to a DCE de- vice, set the plugs to the “B-C” position.

NOTE:

Do not cut PDIU-DS PERCEPTION jumper wire for STRATA DK8 or DK16 installations.

10.73 Assembling the PDIU-DS

1)Position the back panel to the PCB (see Fig- ure 7-33).

2)Slide the back panel down into its side grooves.

3)Attach the bottom panel, and secure with the four non-captive screws.

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