Comtrol RocketModem Scheda di installazione hardware - Pagina 3

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Note: Only the first card requires that the I/O

address entered in Step 5a matches the

physical DIP switch setting. For each

subsequent card, select any unused I/O

address.

The list of I/O and IRQ parameters you entered

displays.

6. If the list is correct, press Y. If the information is not

correct, press N to restart the diagnostic.

The diagnostic resets and re-initializes all modems.

7. After initialization completes, an option box displays

at the bottom of the screen:

– D to run the Diagnostic

– T for Terminal Mode at 9600 baud

– M for Terminal Mode at maximum baud

– Q to QUIT

8. Press D to test the serial I/O and IRQ. (The T and M

options are discussed under Terminal Mode, below.)

The diagnostic tests each RocketModem card's serial

I/O, IRQ, and telephone type, and displays the

results.

9. Press any key to continue. If you have more than one

card installed, the diagnostic repeats until all cards

have been tested.

10. Press any key to continue. The diagnostic displays a

summary of the test results.

11. Press any key to continue.

The diagnostic resets all modems and re-initializes

all RocketModem boards.

12. Press Y to restart the diagnostic at Step 3 (for

example, to enter Terminal Mode), or N to quit.

If you select N, remove the diagnostic diskette from

the drive, then press the space bar or Enter key to

boot the system. Do not use the CTRL-ALT-DEL

reboot command. Use of this command may result

in CMOS errors on some systems.

Note: The Terminal Mode option is used to test modems

by dialing out using AT commands. For an

example of how to use this option, see Terminal

Mode, later in this Installation Card.

Troubleshooting

If an ISA-bus modem card fails to initialize, check to

make sure you have selected the correct I/O address and

IRQ. If that does not solve the problem, try removing the

card and reseating it in another slot.

If you have tried any "short cuts" in running the

diagnostic, try rebooting your system from the floppy.

The diagnostic WILL NOT WORK in a "DOS over

Windows" session.

Terminal Mode

If you select either the T or M Terminal Mode option

while running the diagnostic, the diagnostic starts a

simple terminal emulation program. The T option

selects terminal mode at 9600 baud, while the M option

selects terminal mode at the maximum baud rate

supported by your RocketModem model.

1. If there is more than one RocketModem installed,

you are asked to select a card. Do so.

2. A numbered menu listing the ports on the selected

card displays. You may also press H for help with AT

commands, R to reset a single modem, T to reset all

modems on the selected board, or X to exit.

3. Enter a port number to select a modem. The

Terminal Mode screen displays.

4. Type AT commands to communicate with the

modem.

5. When you are done, press Esc to return to Step 2.

For example, follow these steps to test two modem ports.

This example requires that phone lines be connected to

both Ports 1 and 2.

1. Select Port 1.

2. Enter AT&F0 to initialize the modem to factory

default parameters.

3. Enter ATS0=1 to direct the modem to answer the

phone on the first ring.

4. Press Esc to return to the port menu.

5. Select Port 2.

6. Enter AT&F0 to initialize the second modem.

7. Enter ATDxxx xxxx (where xxx xxxx is the phone

number of the line connected to the first modem).

Watch and wait. The Port 2 modem should dial the

Port 1 modem and you should eventually see the

CONNECT message.

8. Press Esc.

9. Select Port 1. You should see RING and CONNECT

messages.

10. Any keys you press while looking at Port 1 display

when you look at Port 2. Likewise, any keys you

press while looking at Port 2 display when you

return to the Port 1 display.

11. To exit, on either of the ports enter the escape

sequence +++. This enables you to enter ATH to

hang up, or any other valid AT command string.

If you do not hang up, you can return to the still-

active connection by entering ATO.

12. To exit terminal mode and return to the port menu,

press Esc.

Modem Cables

RocketModem ports use standard telephone-type

unshielded twisted-pair cables with RJ11 modular

connectors. These can be purchased anywhere

commercial telephone products are sold.

If you choose to build your own cables, use the following

information. When building cables, use Category 3 (or

better) unshielded twisted-pair wiring.

Pin 1

The connector pinouts are as shown below:

RJ11 Pins

1 and 4

Pin 4

Signals

Not used

Ring

Tip