Re: [cobalt-users] ISDN Remote Access?

["H.P. Stroebel" <hpstr@xxxxxxxxxxxxx>]

Rodolfo Paiz schrieb:
> 
> I have a Qube 2, and I'm signing up for ISDN service. I would most appreciate
> recommendations on an external ISDN modem for the Qube, since the telco only
> offers an internal PCI card from Siemens and has no idea whether drivers for
> Linux are available.

the siemens card should be supported, as most of the cards supported by
the isdn4linux-tools are based on the siemens isdn chipset.
you then have a new device, that reacts like a modem; faxing is still
not possible.
 
> I assume that an external ISDN modem will act just like a normal modem and can

yes

> * Does the Qube 2 support ISDN at all? If it does, should I even look at the
> internal card they offer me, or should I go for an external version?

using the internal card, you may have to recompile the kernel with isdn
support. tlk in munich, germany, sells qube2`s with a preinstalled isdn
card, elsa i think.
consult the isdn4linux howto for details of supported cards.

 
> * One of the beauties of ISDN is that you can use both channels (lines) for data
> to get 128 Kbps throughput. Then, if there is an incoming call, the system can
> automatically drop one channel and go to 64 Kbps, wait for you to answer and
> finish the phone call, then pick up the channel again for full speed. How the
> heck does the Qube administer this... or does it?

don`t know
 
> * Can anyone offer recommendations on specific ISDN modems to purchase? I've

i made very good experience with the elsa microlink isdn series. they
are not cheap, but they just work. (and you can fax with it).

another good choice would be a zyxel 2864isdn, also not cheap, but works
fine.

don`t bother with the cheaper zyxel omnitel terminal adaptors, or with
us robotics/3com. they are known to create some problems. consult the
mgetty mailing list for details.

> telco to offer me a static IP for the ISDN hookup. Also, I will be buying a
> small switchboard (PBX, whatever you call it) with capacity for four lines; then
> I'll connect the house's two analog lines and the two ISDN channels to it so I
> can effectively use four voice lines at max capacity. So the ISDN modem *does*
> need to have two analog ports output.

i`m not sure i understand how you mean this; but this gets really
off-topic... there is a elsa microlink terminal adaptor with two analog
ports, i think. the zyxel 2864 should have them, too.


-- 

H. P.  Stroebel, Germany

CGI-FAQ for Raq-Newbies :
http://users.iol.it/hpstr/

A problem to some is a 'feature' to others.