Real Time Ascend Maling List Archive
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(ASCEND) Data Communications Remote Access Servers comparison (fwd)

Once upon a time Kevin Smith shaped the electrons to say...
>>DC invited 20 vendors and about 13 declined to participate. Notable ones
>>who declined to participate were Livingston, MicroCom and Xyplex.

Mainly because we haven't fielded the PM-4 yet and that is the product
for this class...

I had some issues with their data table and emailed this to the author:
---cut---
     
I do some of the competitive analysis for engineering here at
Livingston, so a few things caught my eye in the data table.  I hope
you don't mind my sending this.
     
I have some questions about the data.  You say the MAX TNT can have
672 modems per chassis.  This is not true.  Each chassis, or shelf,
holds 288 modems.  It can terminate 672 DS0s, but not modems.  For 672
modems you need a stack of 3 'shelves' or chassis wired together.  I'm
also not sure the T3 card has been fielded at this time, but I don't
believe so.  Also, the TNT is claimed to support X.25 - I didn't see
that listed.
     
You list 672 modems for the Bay Networks MSX 5000.  Can you confirm
that?  The materials I have from them indicate you can use up to 12
remote access modules, and the 5399 is 2 lines, 48 modems for T1.  Or
576 modems.  They have 62 modems per for E1, or 744 modems per
chassis.  (Though only 60 channels on 2 E1 ports, so really 720 usable
modems).  This is from the 5399 data sheet, also from conversations
with people over there (I used to be with Xylo).
     
For protocols on the 5000 MSX, as with the TNT a variety of modules
are available.  Ether, Fast Ether, FDDI, Token Ring, ATM, PRI,
Channellized T1, and Analog/Async.  It just seemed fair to mention
these as a variety of media are listed for the TNT.
     
On the 3Com Hi-Per access I think the '450' modems is misleading since
T1 figures are used for the other products.  Under T1 the Hi-Per can
hold 336 modems.  Or 14 cards at 24 each.  With E1 they go to 420
modems, or 14 x 30.  This is directly from the data sheet avaialble
from 3Com.  Can you confirm X.25?  I know they have X.75 support.  All
of their write ups list or show 14 modem cards with 2 HiPer ARCs
(Access Router Cards).  Was the 450 figure using one ARC and 15 cards?
With that I could see 450 on E1 or 360 on T1.  But I wasn't aware that
the unit supported that many.  If you can confirm that I'd appreciate
it.
     
I'm curious - why distinguish 'Ascend RADIUS' as special?  It is just
another implementation of RADIUS.  Ascend AAA really isn't special.
---cut---

-MZ
--
Livingston Enterprises - Chair, Department of Interstitial Affairs
Phone: 800-458-9966 510-737-2100 FAX: 510-737-2110 megazone@livingston.com
For support requests: support@livingston.com  <http://www.livingston.com/> 
Snail mail: 4464 Willow Road, Pleasanton, CA 94588
     
     
     



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