http://www.dslreports.com/forum/New-ATT-Cingular-Tower-23120777 en Thu, 09 Feb 2012 10:23:39 EDT Thu, 09 Feb 2012 10:23:39 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23204457
Of course there is no excuse for the such horrible performance of the ATT wireless network, with the dropped calls and all, especially embaressing... ;)]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23204457 Sun, 18 Oct 2009 21:07:13 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23203989 said by AMD Phreak:

I believe that is dependent on the number of T-1's per site, if you will.

A T-1 can handle 24 calls, provided the rest of the channels are not being used for other purposes like data. Then it is a matter of oversubscription. Traffic engineering is used to determine actual loads and predicted loads, so that the carrier can plan sufficiently for upgrades.

Someone correct me if I am wrong, but that is my understanding of it.
Consider yourself corrected. ;-)

A T1 actually a DS1 (once it is handed off to the customer) if channelized out at 64K will only transport 24 calls and if it is a primary rate ISDN that number drops to 23 calls as the D channel requires a single 64K channel to handle call setup and teardown.

However in the non-analog PCS and cellular world the DS1’s can carry considerably more calls than a channelized DS1 due to the encoding of the analog voice at the handset before hitting the RF and in turn the subsequent decoding at the MTSO.

This is one of the reasons calls over wireless many times have the quality of two cans connected by a string.

Wayne
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If you cannot fix it with a buttset and some beanies you're not a technician.]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23203989 Sun, 18 Oct 2009 19:18:16 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23201214
The number of calls is defined by the stuff in the shelter. :)]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23201214 Sat, 17 Oct 2009 23:23:46 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23189986 http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23189986 Thu, 15 Oct 2009 16:38:37 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23186443
I was aware of the T-1 bandwidth issues... The part I am more curious about is the antenna side of things. How many phones can 1 Antenna deal with.

Regards

Joshb
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R.I.P Mom We miss you.]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23186443 Thu, 15 Oct 2009 02:22:28 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23185375
A T-1 can handle 24 calls, provided the rest of the channels are not being used for other purposes like data. Then it is a matter of oversubscription. Traffic engineering is used to determine actual loads and predicted loads, so that the carrier can plan sufficiently for upgrades.

Someone correct me if I am wrong, but that is my understanding of it.
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--LLigetfa:"Wimax is like teenage sex. Everyone talks about doing it."]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23185375 Wed, 14 Oct 2009 21:23:07 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23180458 said by quetwo:

No, we will have 24 micro-cells. These are essentially "towers" that are affixed directly to the building roof, or having 1ft antenna masts. These "towers" will have 2 antenna elements (one for UMTS and one for GSM). The large tower that was built (and photoed) is a temporary install only, and does not represent the rest of the install.

On our campus, we need a higher density than a typical area. On any given day, we have a population of about 80,000 people on our campus, and on football / basketball game days we host > 120,000 people. While most of these people won't have an AT&T phone, we are still planning for saturation numbers.
You have me curious, How many phones can a single cell site handle?
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R.I.P Mom We miss you.]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23180458 Wed, 14 Oct 2009 01:52:52 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23174968 http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23174968 Tue, 13 Oct 2009 07:26:22 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23174363 --
Duct tape is like The Force – it has a light side and a dark side, and it binds the Universe together]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23174363 Tue, 13 Oct 2009 00:23:41 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23174168
On our campus, we need a higher density than a typical area. On any given day, we have a population of about 80,000 people on our campus, and on football / basketball game days we host > 120,000 people. While most of these people won't have an AT&T phone, we are still planning for saturation numbers.]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23174168 Mon, 12 Oct 2009 23:27:25 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23165805
(With 24 micro-cells, that seems to me to be a MASSIVE overkill I would think though? Someone correct me on this please. Unless you're counting every antenna as a "cell" but most of the time here it's the tower itself that basically is referred to as a "cell"... Yes perhaps bad terminology but it's what the techs here say. I would assume you don't have 24 tower/base sites such as this one above on a single campus.)
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Justin - DSLR resident grouch and Mr Negativity
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Have a nice day!]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23165805 Sun, 11 Oct 2009 08:39:52 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23164837 http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23164837 Sat, 10 Oct 2009 22:26:15 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23157867 http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23157867 Fri, 09 Oct 2009 12:51:19 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23130196
Each site is different as to how much bandwidth they need.]]> http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23130196 Sun, 04 Oct 2009 14:18:34 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23128195 http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23128195 Sat, 03 Oct 2009 23:12:11 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23128038 http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23128038 Sat, 03 Oct 2009 22:30:38 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23124860 http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23124860 Sat, 03 Oct 2009 07:59:05 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23122925 http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23122925 Fri, 02 Oct 2009 19:52:33 EDT http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23121046 http://www.dslreports.com/forum/Re-New-ATT-Cingular-Tower-23121046 Fri, 02 Oct 2009 14:55:06 EDT http://www.dslreports.com/forum/New-ATT-Cingular-Tower-23120777
When they are finished, they will have 24 micro-cells on our campus (3 miles wide, 9 miles deep, but only 3x3 are going to be covered).

The attached are of the temporary tower and doghouse that they are deploying right outside my window. They have a temporary 100pair cable running from our basement going to the doghouse, holding about 50 T1's. This tower will service GSM and UMTS service, and should give moderate penetration on our campus.

They just started digging the foundation of their real doghoue that will feed the DAS antennas. Our campus is providing the fiber to interconnect the antennas, but they are installing in locations both of us agreed to. Like the other 6 vendors on our campus, you won't be able to see them from the ground, or really know where they are unless you work for my department. All the vendors install antennas on our roofs to painted to match, and often are confused for ventlation.

Picture of the AT&T Doghouse (aka the Cow)

The 100ft tower. 12 antennas in 6 features off 3 posts. 3 GSM and 3 3G

temporary cement work to keep the tower up

CO grade batteries

DC rect and GSM antenna cabinet

UTMS antenna systems

T1 terminating equipment (Acatel/Lucent)

antenna connecting equipment for GSM

]]> http://www.dslreports.com/forum/New-ATT-Cingular-Tower-23120777 Fri, 02 Oct 2009 14:14:12 EDT