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| README file for the PCBIT-D Device Driver. | |
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| The PCBIT is a Euro ISDN adapter manufactured in Portugal by Octal and | |
| developed in cooperation with Portugal Telecom and Inesc. | |
| The driver interfaces with the standard kernel isdn facilities | |
| originally developed by Fritz Elfert in the isdn4linux project. | |
| The common versions of the pcbit board require a firmware that is | |
| distributed (and copyrighted) by the manufacturer. To load this | |
| firmware you need "pcbitctl" available on the standard isdn4k-utils | |
| package or in the pcbit package available in: | |
| ftp://ftp.di.fc.ul.pt/pub/systems/Linux/isdn | |
| Known Limitations: | |
| - The board reset procedure is at the moment incorrect and will only | |
| allow you to load the firmware after a hard reset. | |
| - Only HDLC in B-channels is supported at the moment. There is no | |
| current support for X.25 in B or D channels nor LAPD in B | |
| channels. The main reason is that these two other protocol modes have, | |
| to my knowledge, very little use. If you want to see them implemented | |
| *do* send me a mail. | |
| - The driver often triggers errors in the board that I and the | |
| manufacturer believe to be caused by bugs in the firmware. The current | |
| version includes several procedures for error recovery that should | |
| allow normal operation. Plans for the future include cooperation with | |
| the manufacturer in order to solve this problem. | |
| Information/hints/help can be obtained in the linux isdn | |
| mailing list (isdn4linux@listserv.isdn4linux.de) or directly from me. | |
| regards, | |
| Pedro. | |
| <roque@di.fc.ul.pt> |