weaseled386
join:2008-04-13
Port Orange, FL
 ·Verizon Wireless B..
 ·mybrighthouse
| behind the scenes
Here's a little info from behind the scenes...
U-Verse is being deployed by way of the Alcatel 7330. AT&T is installing two shelves per RT they plan to provide U-Verse. The first shelf is dedicated to ADSL and ADSL ONLY. The second shelf is reserved for IPTV customers. Before bonding each shelf can handle 192 customers over a (fiber) GigE connection. Actually, the GigE connection feeding the ADSL portion can handle up to 4 shelves (768 circuits).
To handle this bonding they'll provide a port from each shelf. They're still working ways to handle U-Verse & bond sites with: DISC*S MX, Alcatel 7300-HD, Alcatel 7300 LP-HD, Alcatel 7300 LP-UD and a few other varients. |
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koolkid1563
Premium,MVM
join:2005-11-06
Powell, WY
clubs:
 ·Bresnan Online
 ·AT&T U-Verse
edit:
May 6th, @04:00PM
| That is odd. You would think that if a VRAD has both a VDSL and an ADSL DSLAM in it that green U-verse customers would also be green for ADSL, which isn't always true. There have been a few cases where a customer is red for ADSL on any tier but green for U-verse.
Unless they don't have the ADSL DSLAMs installed yet? |
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weaseled386
join:2008-04-13
Port Orange, FL | Yeah, that is kinda odd. My best GUESS is that there is a DSL DSLAM at their RT, but it's full? |
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David
Last man standing
Premium,VIP
join:2002-05-30
Granite City, IL
clubs:
·magicjack.com
 ·AT&T Midwest
| two things you guys are confusing. Any DSLAM can do any speed.
For instance if I wanted to sell you a SDSL connection of say 768/768, I could just simply provision the ADSL DSLAM to 768/768 and you wouldn't know the difference. Nor would you the customer care because you are getting what you are paying for at that point. With just simply a card change and reprovision that same shelf in the DSLAM could be a HDSL circuit or any other type of circuit provided the equipment can handle that.
Essentially for Uverse a 7330 could provision speeds for 25mbps/2mbps or 384/384 depending on how it's programmed, and what profile is loaded to the DSLAM. For instance if I wanted to say sell you a T1 speed I could provision a 7330 to 1536/1536 and would you care any different as long as it had the same guarantees as a T1? Nope you sure wouldn't.
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If you have a topic in the direct forum please reply to it or a post of mine, I get a notification when you do this.
Koetting Ford, Granite City, illinois... YOU'RE FIRED!!
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weaseled386
join:2008-04-13
Port Orange, FL
·Verizon Wireless B..
·mybrighthouse
| Yes, this is true. However, that's not the way it's going down. At least not in the legacy BellSouth area.
The configuration is a 2 shelf system. SH-1A is for ADSL, and SH-1B is for VRAD. Each shelf gets a 1G pair of fibers. If there is to be a SH-2A through 4A they will share the 1G pipe (by way of multimode LC-LC fibers) with SH-1A. Each 7330 VRAD shelf receives a dedicated 1G pipe. Right now each of the ADSL 7330 is feeding back to Redbacks, which are being replaced as we speak, by Alcatel 7450's, 7500's, and 7750's.
Just because you can configure a specific speed into a DSLAM doesn't mean it's "approved." The last time, that I'm aware of, that a DSLAM was approved to provide T1 service was the Alcatel 1000's that were CO installed only. RR1 SH-3 was wired for both ADSL & T1. (Just an FYI.) |
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David
Last man standing
Premium,VIP
join:2002-05-30
Granite City, IL
clubs:
·magicjack.com
·AT&T Midwest
| said by weaseled386  :Yes, this is true. However, that's not the way it's going down. At least not in the legacy BellSouth area. Well I know that.
said by weaseled386 :The configuration is a 2 shelf system. SH-1A is for ADSL, and SH-1B is for VRAD. Each shelf gets a 1G pair of fibers. If there is to be a SH-2A through 4A they will share the 1G pipe (by way of multimode LC-LC fibers) with SH-1A. Each 7330 VRAD shelf receives a dedicated 1G pipe. Right now each of the ADSL 7330 is feeding back to Redbacks, which are being replaced as we speak, by Alcatel 7450's, 7500's, and 7750's. Know what they are replacing the Redbacks with?
said by weaseled386 :Just because you can configure a specific speed into a DSLAM doesn't mean it's "approved." The last time, that I'm aware of, that a DSLAM was approved to provide T1 service was the Alcatel 1000's that were CO installed only. RR1 SH-3 was wired for both ADSL & T1. (Just an FYI.) That's correct, but that doesn't mean the 7300 nor the 7330 couldn't either. Plus aren't the alcatel 1000's getting retired now a days? Something about they couldn't really upgrade them.
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If you have a topic in the direct forum please reply to it or a post of mine, I get a notification when you do this.
Koetting Ford, Granite City, illinois... YOU'RE FIRED!!
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wolverine_99
Premium
join:2004-12-07
Mckinney, TX
| Redbacks will remain for legacy IP enabled DSL services in the cB region. The new Uverse enabled 7330s will use the same backhaul technology as the 13 state Uverse platform. This is to ensure compatibility with the provisioning and monitoring systems already in place.
And yes, there is a plan for a separate platform to provide ADSL2+ services out of the same area as the VDSL (Uverse) shelf. This will prevent the cost of tying up Uverse resources for Internet only customers while offering higher speeds to those that desire Internet only. |
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weaseled386
join:2008-04-13
Port Orange, FL
·Verizon Wireless B..
·mybrighthouse
| reply to David
The Redbacks are being replaced by the Alcatel 74xx, 75xx and Fujitsu 77xx switch/routers. They're very new to me, so I'm not 100% sure which does what.
The U-verse (PLS & VRAD) is being deployed completely different than the previous generations of ADSL. Previously ADSL was installed in existing RT's. This as done to maximize the amount of customers who would qualify for the service. (Since most RT's feed multiple cross boxes.) Now, U-Verse is being deployed as close to an individual crossbox as possible. Although you limit the amount of customers that one system can serve, you get a much greater saturation in that specific crossbox. For the most part the Alcatel 1000's stay in place just to provide the lower level of service. I don't do the new cabinet/structure installations, but I do all the existing RT upgrades. For the past year we've been committed to 3+ 7330's per week! Exhausting... 
So far the only Alcatel's that I've seen replaced 100% is the little minirams. Four T1's for 8 customers just didn't make much sense! I agree that cable probably has a better model to start with, but fiber is creeping closer and closer to the home!!! Even for the remote areas, of Florida, AT&T has been deploying DSL directly to SLC5 channel banks. Depending on the outlook we either feed (up to) 4 T1's or a DS3 directly into the channel bank. I think the CAT1's are only good for 3M service where the CAT3 is good for 6M. I know in the Gainesville turf (not city) BST promised broadband to ALL UF students... regardless where they lived. |
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skrupowies
join:2002-08-22
Wallingford, CT
clubs:
·AT&T U-Verse
| reply to weaseled386
said by weaseled386 :The configuration is a 2 shelf system. SH-1A is for ADSL, and SH-1B is for VRAD. Each shelf gets a 1G pair of fibers.
I don't know where this information is coming from but it's not correct. AT&T is deploying 3 main cabinet types - a single shelf 52BP which gets 2 fibers, a 2 shelf 52B which gets 4 fibers and a 4 shelf 52E which gets 8 fibers. The BP and B can both be pole mounted and the E can only be pad mounted. Each shelf can provide up to 192 customers with both IPTV and High Speed Internet (not really called ADSL any longer) using only 1 port over 1 pair. The service is being sold up to 3000 feet over 26 gauge copper and a little further over 24 guage. Longer distances will be available later this year with pair bonding which will use 2 ports and 2 pairs to the house. |
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weaseled386
join:2008-04-13
Port Orange, FL
·Verizon Wireless B..
·mybrighthouse
edit:
May 7th, @12:18PM
| Then things are done differently in your area. I have my hands on this stuff on a daily basis. I know what's in my area, and it is configured exactly as I mentioned above. I don't get my info by reading or guessing, I get it because I have over 20 sites sittig out there with a May PTD.
EDIT: I should have mentioned that we are also deploying the 52-type cabinets. Few to none are pole mounted in this region. There are also several varieties of MESA (not 2/4/6) being deployed to feed the larger RT's.
I'm not saying what you typed is wrong, but they are deploying the 7330's with separated service down here. The VDSL shelves must have dedicated pipes, where the ADSL shelves can daisy chain. |
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apeface
join:2000-09-16
Mckinney, TX
edit:
May 7th, @09:02AM
| reply to weaseled386
The alcatel equipment is the 7330, 7450, and 7750. The fujitsu box is the flashwave 7500. The 7500 is just part of the roadm ring. |
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