🚀 go-pugleaf

Kristoff Bonne wrote:
> 
> Greetings,
> 
> As I soon will have access to a ISDN-line, I was wondering this:
> 
> What is the best solution to connect a linux-box to ISDN?
> - A ISDN ISA-card? (say diehl, avm, teles, ...), or
> - an external 'ISDN-modem' (serial Terminal-adaptor or USR Courier-I),
> connected to the serial connector of the linux-box?

Actually, you should consider 3 different classes:

- Active ISDN ISA/PCI cards (ICN)
- Passive ISDN ISA/PCI cards (Teles, Fritz, ..)
- External ISDN TAs
 
> What will have the least impact on the computer?

- Active ISDN ISA/PCI cards has the least computer impact.
- External ISDN TAs don't eat up a lot of CPU-cycles, but
  every byte on the serial port triggers an interrupt.
- Passive ISDN TAs have the most impact.

> I just whant to use the ISDN for surfing. (if possible also at
> 128 Kbit/s).
 
> The box is a 120 Mhz. pentium (copmpaq prolinea 5120), with 32 Mbyte
> of RAM and a '16550A' serial-port?

I think the 16550A is limited to 115200 Kbps.

I've used Teles 16.3 passive ISDN cards in a Pentium-120 with 8MB RAM
(a long time ago) without problems.

Soggie.

-- 
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 Ivo Clarysse <soggie@starlab.net>,               Tel: +32-2-7215454 
 Research Assistant                               Fax: +32-2-7215380
 Riverland Research, Starlab, Massive Lab, http://www.massivelab.com/