Appendix B: PC Serial Ports
Selecting an Add-In Serial Port Card
This section presents advice on how to choose an add-in serial port card for
use with PassageWay Solution. Because PassageWay Solution does not have
any unique requirements with respect to serial ports, this advice applies
generically to selecting a serial port for use with any peripheral.
In general, there are two main things to consider when selecting a serial port
for use with PassageWay Solution:
1.
Choose a card which offers the flexibility to configure its serial port IRQs
to values other than IRQ3 and IRQ4 (for example, to IRQ2 or IRQ5).
This capability often proves to be very beneficial, especially if you are
purchasing the card to add a COM3 and/or COM4 port to your system.
As described at length in "Workarounds and Solutions to the IRQ
Conflict Problem," for PCs which do not support IRQ sharing (which
includes most PCs, unfortunately), the ability to relocate the IRQ for
COM3 or COM4 away from the defaults (IRQ4 and IRQ3, respectively)
represents the only direct solution to conflicts which may arise when
attempting to use COM1 along with COM3 or COM2 along with COM4
under Windows.
If you know your PC does not support IRQ sharing, or if you are not
sure, it’s a good idea to purchase a card with this capability. If you
know your PC supports IRQ sharing, this capability is not as potentially
important.
2.
For best performance with PassageWay Solution, choose a card which
has hardware support for high-speed communications.
B-10
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Страница 15: ...Contents C Appendix C Running AT TBuzz in Export via Paste Link DDE Mode C 1 Glossary GL 1 Index Index i x ...
Страница 21: ...xvi ...
Страница 28: ...Installing and Setting Up PassageWay Solution Figure 2 1 PassageWay Solution Components 2 3 ...
Страница 65: ...Installing and Setting Up PassageWay Solution 2 40 ...
Страница 93: ...Using AT TBuzz 3 28 ...
Страница 96: ...Using AT TCall Figure 4 1 Untitled AT TCall Window 4 3 ...
Страница 97: ...Using AT TCall Figure 4 2 Components of an AT TCall Window 4 4 ...
Страница 100: ...Using AT TCall Figure 4 4 Desktop with 10 20 Quick Dials and Card Hidden 4 7 ...
Страница 101: ...Using AT TCall Figure 4 5 Desktop with 25 50 Quick Dials and Card Displayed 4 8 ...
Страница 102: ...Using AT TCall Figure 4 6 Desktop with 25 50 Quick Dials and Card Hidden 4 9 ...
Страница 144: ...Using AT TCall Figure 4 26 Printed Cards With and Without the Notes 4 51 ...
Страница 177: ...Using AT TCall 4 84 ...
Страница 181: ...Using AT TSet Figure 5 2 Components of the AT TSet Window 5 4 ...
Страница 247: ...Using Log Viewer 6 20 ...
Страница 250: ...Using AT TConnect Figure 7 1 AT TConnect Window 7 3 ...
Страница 252: ...Using AT TConnect Figure 7 2 Events Log Dialog Box 2 When finished select the OK button 7 5 ...
Страница 265: ...Using AT TConnect 7 18 ...
Страница 287: ...Troubleshooting 9 18 ...
Страница 288: ...Appendix A Menu Trees This appendix contains the menu trees for the PassageWay applications A 1 ...
Страница 289: ...Appendix A Menu Trees Figure A 1 AT TBuzz Menu Tree A 2 ...
Страница 290: ...Appendix A Menu Trees Figure A 2 AT TCall Menu Tree A 3 ...
Страница 291: ...Appendix A Menu Trees Figure A 3 AT TSet Menu Tree A 4 ...
Страница 292: ...Appendix A Menu Trees Figure A 4 Log Viewer Menu Tree A 5 ...
Страница 293: ...Appendix A Menu Trees Figure A 5 AT TConnect Menu Tree A 6 ...
Страница 305: ...Appendix B PC Serial Ports B 12 ...
Страница 311: ...Glossary GL 4 ...
Страница 318: ...560 201 103 AT T 1993 AT T ...