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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>
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