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Re: Terminating many T1's
From: Nathan Stratton <nathan () netrail net>
Date: Tue, 22 Jul 1997 21:37:45 +0000 (GMT)

On Tue, 22 Jul 1997, Ben Kirkpatrick, ELI wrote:

On Tue, 22 Jul 1997, Stephen Balbach wrote:
1. Cisco serial ports and rack CSU/DSU's. Exspensive. Lot of space. 
Cisco has a channelized DS3 card.  Wire once to dacs and provision in
software only.

2. MAX TNT for T1's connecting to a backbone Cisco. Theoretically up to 140 
   T1's in 1 small box with built-in CSU/DSU's. Unproven?

Vary.

3. Cascade. Similair to TNT approach, very exspensive untill you reach 
   70+ T1's in a chassis.
Cascade has a channelized DS3 card as well.  Good for combining many
customers who have a physical T1.  Split out at the dacs.

Yes tend to be big bucks, but is not that bad if you have many T1s to
terminate. 

4. Chanellized DS3. Don't know anything about it - can MFS provide circuits
   this way via a DS3 handoff? No CSU/DSU required? Any other costs/issues?
Channelized DS3 stuff only seems to be useful for putting mulitple
customers on a single physical circuit.  You need to be able to break it
out to the DS1 level for each customer.  Perhaps MFS, PacBell, etc can do
this?  It's probably just a matter of them defining that "product".
(I.E. Feed MFS a DS3 and they give a T1 to each of your customers.)

Yes, the Cascade and Cisco CT3 have a built in M13 built in. All you need
to do is order a DS3 HUB into the providers you want. What we do is run a
few DS3s into the COs in our area. You may want to run a DS3 into a few
telcos also. They can you get the best price for your customers.

DS3 HUBs can be a little on the high side, but they more then pay for
themselves. Say you run a DS3 HUB into Bell Atlantic, you spend around 3K
for the HUB. When you order your customers T1s you only order a 1/2
channel term. So you can more then pay for it with around 9 - 13 DS1s.


Nathan Stratton                                President, NetRail,Inc.
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Phone   (888)NetRail                           NetRail, Inc.
Fax     (404)522-1939                          230 Peachtree Suite 500
WWW     http://www.netrail.net/                Atlanta, GA 30303
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"No king is saved by the size of his army; no warrior escapes by his
great strength.                                        - Psalm 33:16





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