[H-GEN] Multilinked modem options

[David Jericho]

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On Thu, Nov 30, 2000 at 07:38:01PM +1000, Stephen Thorne wrote:
> The way 56k modems work is to take advantage of digital lines. The only
> analog communication is between your modem and your telephone exchange.

Pushing the limits of signal to noise right down in the dregs of the 
phone network :)

> The only way to actually be able to recieve a 56k connection from a v90
> modem is to use digital equipment on the server end, not an off the shelf
> analog modem (this is where my understanding gets fuzzy, having never seen
> said equipment).

If you can justify the cost, you may want to look at installing two Onramp Home
Highway services.

For $42/month, you get two ISDN 64k BRIs, and if you want to use it as such, 
both of those ISDN channels can be used as analogue channels.

You could potentially cheat your way out of it by buying two 64k ISDN cards that
support v.90 modems, and then set things up to multilink the lines.

Call into the ISDN via one analogue phone line, and let the other end call into 
your ISDN.

That way you get 56k in both directions, plus the left over 33.6, all for the cost of
two local calls.

89.6kbit/s potential bandwidth, better than a kick in the face.

Just to make sure, as I know my descriptions be can sometimes bad ;) Arrows point
direction of call.

	---------		   --------- 
	| 	| Analogue -> ISDN |       | 
	|  PC1  |		   |  PC2  |
        |       | ISDN <- Analogue |       |
	---------		   ---------

Or there is always the DOV option. ISDN calls are either flagged as data or voice,
and Telstra can charge you accordingly. 

The voice calls are flagged at $0.18/c flagfall and that's it. I know the NetJet
cards can do Data-Over-Voice, and you get near 128k/s speeds. 

-- 
David Jericho, Systems Administrator
WebMatchIT Interactive Marketing
Who after writing all that, only just remembered about DOV

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