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Re: ISDN modems



You have to remember you'll never will get 128Kbs with serial connection.

You nee to bye external serial card (about $30)
Reuven M. Lerner wrote:

> >>>>> Jacques Goldberg writes:
>
>   Jacques> Does somebody know if the Teles.16/PP or the Teles.16/PnP
>   Jacques> would work on my Linux box (RH 4.2, kernel 2.0.30 ,
>   Jacques> upgrading ruled out for serious application-specific
>   Jacques> reasons) ?
>
> The short answer: Yes, this will work.
>
> The longer answer: There are apparently three different Teles cards
> with very similar names -- the 16.3, the 16.3 PnP, and the 16.3c PnP.
> All can work with the latest version of the "HiSax" driver, which you
> can get from ftp://ftp.suse.com/pub/isdn4linux/v2.0/.  You will have
> to grab the latest tarfile, which includes the source for some modules
> that fail to compile.  Ignore or comment those out.
>
> You might well need kernel 2.0.32.  I started with the Red Hat 5.0
> kernel (2.0.31), upgraded to 2.0.32, and then compiled the latest
> version of the HiSax module.
>
> If you are using the 16.3 PnP or 16.3c (which is what Internet Zahav
> installs if you order their package), you will need to use the isapnp
> package to deal with the plug-and-play issues.  You will then need to
> use insmod or modprobe in order to load the module into the system.
>
> Note that the 16.3 PnP requires two memory locations (io0 and io1),
> while the 16.3c PnP requires only one (io)!  Specifying the memory
> locations incorrectly will result in the driver not loading.
>
> You can use the ISDN card in IDSN mode, which requires additional
> fiddling and the use of "isdnctrl" and other utilities.  I decided to
> take the easy way out and use the modem emulation provided by the
> isdn4linux system.  Minicom, pppd, and diald worked just fine; I
> simply had to point them to /dev/ttyI0 rather than /dev/cua0 or
> /dev/modem.
>
> Using the modem emulation, I got extremely good performance (just
> under 6.0 KB/sec on an ftp from the States) using the 16.3c over
> Internet Zahav.  The only problems I encountered were occasional
> hangups from the side of Internet Zahav, perhaps tickled because I
> didn't specify -bsdcomp.  When I play with the configuration again on
> Sunday, I'll try to add this option, and we'll see what happened.  It
> also seems that Internet Zahav took between four and five minutes to
> allow us to log in again once we were disconnected in this manner.
>
> There is lots of documentation for ISDN under Linux, but it's (a) not
> very practical, (b) poorly written, (c) hard to find, or (d) written
> in German.  I hope to write something basic once everything is stable
> on the connection I set up.
>
> I hope that this helps!
>
> Reuven



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