> Hi Louie,
>
> >You've got to look at what you're actually getting as a delivered capability.
>
> What we are looking for is just 30 x 64 kbit incoming ISDN channels for
> remote access to Internet. "remote access concentrator".
>
> >channels. Some of them might be combined with others to provide Nx64kb/s
>
> I see the Portmaster 3 can bond channels even across PM3 chassis, but we
> would not need anything so fancy as that, as least in the first
> phase.
This was different from what I had described, which is combining two
or more 64kb/s channels into an aggregate channel of higher capacity;
essentially a fractional-E1 (or T1).
The "bonding" thing you referred to is really PPP multi-link where a
packet is segmented, and sent in parallel over multiple links.
> Much more "sellable" to our clients (paying metered access for
> local time charges for ISDN in Europe) would be hardware STAC compression,
> ie, Lucent sells a card for the PM3 for hardware-assisted compression, for
> all 60 channels compressed in a 2 x E1 chassis. Is there a PCI
> stac-compression card supported by fbsd?
I dunno, if it was me, I'd just buy an Ascend/Lucent MAX or TNT box
and declare success.
I suppose you expose multiple devices, one per channel, like the sr driver
does for one channel. But this is something of a different beast since
you'll also need to do something about the ISDN signalling. I'm not
too familiar with how the isdn4bsd code is structured.
louie
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