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To: Curtis E. Bemis who wrote (4657)7/15/1999 9:00:00 AM
From: Frank A. Coluccio  Read Replies (2) | Respond to of 12823
 
Curtis, I just did a lookup.

From the Dan Kegel ISDN Page, at the time of the first release of IDSL:

alumni.caltech.edu

Ascend using Data-only ISDN As Step towards ADSL

Ascend had a bright idea: if the phone companies don't like us nailing up connections to our ISP's through the phone companies' switches, why not utterly bypass the switches? In other words, use ISDN just like ADSL. Your line will run straight to (naturally) an Ascend router instead of the phone company. You can't make a phone call with it, but you don't have to pay usage charges, either. Plus, you can upgrade to ADSL when it comes down in price, and the backbone can handle it.


Note the part about when the backbone can handle it. Can you recall when the backbone/core was the bottleneck?

-----

And from the 3Com page:

3com.com

[IDSL] Specifications

Performance
Sustained full-rate packet forwarding at 64, 128, and 144 Kbps
Transparent to DLC and U loop ISDN repeaters
18,000 feet on a single pair
36,000 feet with U loop ISDN repeater


Regards, Frank Coluccio