cooldude9919
join:2000-05-29
Cape Girardeau, MO
clubs:
| AT&T Fiber Cabinet
So we have a fiber cabinet that belongs to AT&T in our phone room. We currently have a good amount of T1's (~15 with some being data some voice) that are fiber fed to the cabinet and handed off via the norm. We placed an order for a DS3 and AT&T is saying that the POP that serves our area is not able to support DS3 Access (they call it a Dead Read). I am confused sice we have this fiber cabinet on a ring and i see the one thing talks about OC-3 and such so im not sure whats up. I know of at least one other company (though im sure there are more in a town of this size) that have a DS3, so im wondering if there is some kind of mix up or what. We had a att tech that comes out to do most of our installs tell us in the past that we should go ds3 and it would be really easy since we already have the fiber cabinet in our building.
We are trying to get to the bottom of this, but is it just a att deathstar mixup, or is the most this fiber can offer us is Nxt1? |
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LazMan
join:2003-03-26
Angus, ON
 ·Bell Sympatico
 ·Rogers Hi-Speed
| You've got an DDm OC3 Mux there... Technically, the transport can handle a DS3; however, the ring you're on may be filled up to the point where they cannot fit a/another DS3 on it; without upgrades. The ring has a finite capcaity (155 Megs) - a DS3 is 45 megs (well, 51 by the time it get's embedded into a STS1) - either way, about a 3rd of the rings capcity.
No doubt you can get a DS3 - it's just a matter of how much cash do you want to throw at the problem.
Laz |
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cooldude9919
join:2000-05-29
Cape Girardeau, MO
clubs:
edit:
July 22nd, @08:45AM
| said by LazMan  :You've got an DDm OC3 Mux there... Technically, the transport can handle a DS3; however, the ring you're on may be filled up to the point where they cannot fit a/another DS3 on it; without upgrades. The ring has a finite capcaity (155 Megs) - a DS3 is 45 megs (well, 51 by the time it get's embedded into a STS1) - either way, about a 3rd of the rings capcity. No doubt you can get a DS3 - it's just a matter of how much cash do you want to throw at the problem. Laz So that means everyone on this ring would be sharing 155mb unless they upgraded equipment? (ours or everyones?) |
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LazMan
join:2003-03-26
Angus, ON
·Bell Sympatico
·Rogers Hi-Speed
| said by cooldude9919 :So that means everyone on this ring would be sharing 155mb unless they upgraded equipment? (ours or everyones?) Not "sharing" the same way network or cable shares... It's all dedicated, or nailed up connections. But the total capacity of the ring is 84 T1s or 3 DS3s, or some combination... To upgrade, they'd have to swap out the shelves of everyone on the ring, and replace with something faster (OC12 or 48, most likely) - which if it's a 4 or 5 node ring (pretty common setup) would take a LOT of cash, and effort and planning...
Laz |
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LightSpan
Premium
join:2004-02-18
Georgetown, KY | If they have the capacity the can do a oc3 plus upgrade.By changing out the timeing cards and fiber cards in all the nodes. |
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cooldude9919
join:2000-05-29
Cape Girardeau, MO
clubs:
| reply to cooldude9919
we canceled the ds3 order. Att's computers said no to the order, and they where trying to find out if they did or didnt have capacity. We waited for 4 days but we had to make a choice because we are having major congestion issues and we couldnt wait around forever on att. We jumped ship to charter fiber but we are looking at at least a 60 day lead time, where if att could get is the service it should have taken less time than that. If the fiber ring was the problem and they did agree to do upgrades it could have taken longer than that, but no one could ge us an answer so lost business for them. Kind of a waste since the fiber was already in (now we will have att and charter fiber) but oh well. |
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cob_
1310nm Of Goodness
Premium
join:2003-07-08
Tulsa, OK
| reply to cooldude9919
You assume it would have taken a long time, but perhaps they had spare DDM-2000 OC12 equipment in inventory and could have done it pretty rapidly. Install timelines always depend on how vocal the customer is about getting service established rapidly. Isn't it funny how this whole bay is dedicated to an OC3 terminal?
»www.adtran.com/adtranpx/Rooms/Di···MzJEOF1d
--
"No matter how hard you push and no matter what the priority, you can't increase the speed of light."
- RFC 1925 |
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cooldude9919
join:2000-05-29
Cape Girardeau, MO
clubs:
| said by cob_ :You assume it would have taken a long time, but perhaps they had spare DDM-2000 OC12 equipment in inventory and could have done it pretty rapidly. Install timelines always depend on how vocal the customer is about getting service established rapidly. Isn't it funny how this whole bay is dedicated to an OC3 terminal? » www.adtran.com/adtranpx/Rooms/Di···MzJEOF1d We where pretty vocal about it from the start. When they came back they said this pop didnt even support ds3's which isnt true. Then they started talking about a capacity issue but wouldnt specify if it was our ring (most likely) or a capacity issue at the POP (upstream link to st.louis or otherwise). We talked to several people and no one could give us an answer. I find it funny that we have all this equipment from att but its only feeding us t1's when it could do so much more.
Either way at least with charter we are getting ethernet handoff (saved us $5k on a ds3 card for the 3845) and it can scale up to and over 100mbit if needed where the ds3 could only do 45mb. |
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claydean
join:2003-04-22
Boone, IA
clubs: | Is the local POP tariffed for DS3? I would assume it is, but we have had an issue before where the local pop was not tarrifed to provide the circuit type we needed. Of course that was OC's |
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cob_
1310nm Of Goodness
Premium
join:2003-07-08
Tulsa, OK | reply to cooldude9919
It looks like it's got a T1 panel in the bay too, so one or more of those DS3s is being broken down into T1 cross connects. |
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cooldude9919
join:2000-05-29
Cape Girardeau, MO
clubs:
| said by cob_ :It looks like it's got a T1 panel in the bay too, so one or more of those DS3s is being broken down into T1 cross connects. Yep, as i said in my first post we have a good amount of t1's currently being fed by the fiber. So that does knock out one possible DS3, which only leaves 2 and im not sure who else has what on our ring. Hopefully we will at least hear the exact reason back from att for future reference. |
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