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Technology Stocks : Ascend Communications (ASND) -- Ignore unavailable to you. Want to Upgrade?

To: Dennis Doubleday who wrote (45937)	5/2/1998 8:12:00 PM
From: gbh	Read Replies (1) \| Respond to of 61433

It is. 40GB fully non-blocking in a 19-inch rack-mountable box. And it will do OC-48c. The "c" stands for "concatenated" which means that it will handle the full 2.5GB in a single VC, as opposed to the OC-48STM-16 provided by the GX-550, which allows only for 4 622MB VCs. Dennis, it is what? I understand it is 40Gb/s non-blocking. But, if the base configuration is 10Gb/s, as per the press release, this leads one to believe the only way to get to 40 is by serially connecting 4 of these together. The implication here is that there are really 4 discrete loosely coupled 10Gb/s switching matrix's, and so latency between them would not be nearly the same as a single full 40Gb/s switching matrix. I know that this is the way ASND can claim 100Gb/s with the 550. But its really just a 25Gb/s switch. I don't believe many customers actually use the 100Gb/s configuration (or FORE's 40Gb/s???) because of these latency issues. Please correct me if I'm wrong. Gary

To: Dennis Doubleday who wrote (45937)	5/3/1998 5:34:00 AM
From: bucky89	Read Replies (1) \| Respond to of 61433

It is. 40GB fully non-blocking in a 19-inch rack-mountable box. And it will do OC-48c. The "c" stands for "concatenated" which means that it will handle the full 2.5GB in a single VC, as opposed to the OC-48STM-16 provided by the GX-550, which allows only for 4 622MB VCs. Thanks, Dennis. Do you mean VC (virtual connection) or VP (virtual path)? You can break VP's down into smaller VC's which would be useful for reselling arrangements. An OC-48 VC would be totally ridiculous and humungously big for any one customer. Like drinking from a firehose. Either way, I don't think this feature is a big deal. bucky89