From - Fri Dec 14 12:53:20 2001 X-Mozilla-Status: 0001 X-Mozilla-Status2: 00000000 FCC: IMAP://chris@po12.mit.edu/Sent Message-ID: <3C1A3C90.97F8C059@mit.edu> Date: Fri, 14 Dec 2001 12:53:20 -0500 From: Chris Murphy Organization: Massachusetts Institute of Technology X-Mozilla-Draft-Info: internal/draft; vcard=0; receipt=0; uuencode=0; html=0; linewidth=0 X-Mailer: Mozilla 4.78 [en] (X11; U; SunOS 5.8 sun4u) X-Accept-Language: en MIME-Version: 1.0 To: "James D. Bruce" CC: dbaron@mit.edu, njj@mit.edu, vkumar@mit.edu, network@mit.edu Subject: Re: Fwd: Wireless support References: Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Jim,

I've CC'd this to the network group as well, in case anyone else has comments.

I will see if I can get all the floor plans together in time, to try and refine this first order estimate.

Initially, I'm going to estimate an average of 25 access points per building, along the lines of the student center deployment.  This is across 11 dorms, plus the new one under construction, for a total of 300 access points.  I'll also estimate 70 power injectors will be needed.

Equipment wise, we'd be looking at approximately $233,500 ($650 per AP, $550 per injector).  We would need to get current pricing to finalize this.  I'd recommend deploying Avaya's new generation AP, so we don't have issues if we want to deploy 802.11a in addition to 802.11b.

For installation costs, we can start with  the draft proposal we discussed of $1000 per AP.  We need to keep in mind that the physical infrastructure in the dorms is below par, and we would likely need a firm commitment from Housing to get the resources we need.  As an example, conduits in Next House are full, and I am told Housing has expressed resistance on installing new ones.  As the infrastructure is below par, I'd probably want to raise the approximate per AP cost to $1200, or $360,000 total.  This would NOT include any general infrastructure upgrades needed.  Tom or others in the network group are probably better up to date on the dorm network situation than I am.

If we want to do the grad dorms (6 +1 under construction) as well, I'd add an additional 175 APs and 40 injectors, for $135,750 for equipment and $210,000 for installation.

Totals:  $593,500 for undergraduate dorms (300 APs) , $939,250 for grad and undergrad (475 APs).

An alternative estimate would be to scale expenditures for the wireless project to the number of APs needed for the dorms.  Some issues with this approach are the need to remove the costs for the test equipment purchased during the project (~$35,000) and that we received equipment from Avaya/Agere on a one-for-one matching basis.

Some issues that may change this a bit:  We would need to verify both new AP prices and whether we can still get the one-for-one donation from Avaya/Agere.  Also, we do have a stock of APs not used in the project, which we're looking into upgrade/trade-in possibilities for.

I'd regard all of this as approximate until we could do a site survey and get some accurate data on cabling costs and issues.  From our experience, we're probably looking at $48,000 for a survey of all the dorms, grad and undergrad.

-Chris
  From - Mon Dec 17 12:08:10 2001 X-Mozilla-Status: 8019 X-Mozilla-Status2: 00000000 FCC: IMAP://chris@po12.mit.edu/Sent Message-ID: <3C1E267A.D73B57DB@mit.edu> Date: Mon, 17 Dec 2001 12:08:10 -0500 From: Chris Murphy Organization: Massachusetts Institute of Technology X-Mozilla-Draft-Info: internal/draft; vcard=0; receipt=0; uuencode=0; html=0; linewidth=0 X-Mailer: Mozilla 4.78 [en] (X11; U; SunOS 5.8 sun4u) X-Accept-Language: en MIME-Version: 1.0 To: "James D. Bruce" CC: dbaron@mit.edu, njj@mit.edu, vkumar@mit.edu, network@mit.edu Subject: Re: Fwd: Wireless support References: Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit 

Jim,
I've CC'd this to the network group as well, in case anyone else has comments.

Initially, I'm going to estimate an average of 25 access points per building, along the lines of the student center deployment.  This is across 11 dorms, plus the new one under construction, for a total of 300 access points.  I'll also estimate 70 power injectors will be needed.  If we add in the grad dorms (6 + 1 under construction) I estimate an additional 175 APs and 40 injectors.

Using these numbers as an approximation, a site survey of the dorms would be in the order of $30,000, $48,000 if graduate dorms are included.

Equipment wise, we'd be looking at approximately $265,000 ($750 per AP, $550 per injector), $420,000 including grad dorms.  We would need to get current pricing to finalize this.  I'd recommend deploying Avaya's new generation AP, so we don't have issues if we want to deploy 802.11a in addition to 802.11b, and I've upped the per-AP price slightly to reflect this.

On the installation side, we first need to keep in mind that the physical infrastructure in the dorms is below par, and we would likely need a firm commitment from Housing to get the resources we need.  As an example, conduits in Next House are full, and I am told Housing has expressed resistance on installing new ones.  From our experience during the project, we'd likely be falling into a rage of $1500 per AP for cable installation costs given the potential difficulties, or $450,000 ($713,000 including grad dorms).  There is an additional cost for configuation and installation of the AP at a cost of $200 per AP, or $60,000 ($95,000 including grad dorms).

This would NOT include any general infrastructure upgrades needed.  Tom or others in the network group are probably better up to date on the dorm network situation than I am.

To summarize:
                                        Undergraduate Only        Undergraduate and Graduate
Survey                                 $30,000                          $48,000
Equipment                            $265,000                        $420,000
Cable Installation                 $450,000                        $713,000
AP Installation                     $60,000                          $95,000

TOTAL                                $805,000                        $1,276,000

Issues that will change this:  We would need to verify both new AP prices and whether we can still get the one-for-one donation from Avaya/Agere.  Also, we do have a stock of APs not used in the project, which we're looking into upgrade/trade-in possibilities for.  And most importantly, we need the survey results to get the actual count of APs needed and a solid quote for the cabling work.  But based on the asumptions and project experiences, I think this is a good first cut.

-Chris
  From - Thu Apr 25 16:59:32 2002 X-Mozilla-Status: 8009 X-Mozilla-Status2: 00000000 FCC: IMAP://chris@po12.mit.edu/Sent Message-ID: <3CC86E34.91D12106@mit.edu> Date: Thu, 25 Apr 2002 16:59:32 -0400 From: Chris Murphy Organization: Massachusetts Institute of Technology X-Mozilla-Draft-Info: internal/draft; vcard=0; receipt=0; uuencode=0; html=0; linewidth=0 X-Mailer: Mozilla 4.78 [en] (X11; U; SunOS 5.8 sun4u) X-Accept-Language: en MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Here are my survey question updates: Question 6, first page: I use the following to connect my PDA to the Internet (select all that apply) - wireless LAN (802.11b/WiFI) - Ethernet - cellular/cable - cellular/IR - cellular/Bluetooth - cellular/internal card or integrated The above should also be used in the third section for a "Connectivity Options" section. Third section, Synchronizing Which methods would you like to be able to use to synchronize your PDA? - Synchronize using my desktop or laptop machine - Synchronize using publically available machines or kiosks - Synchronize via the Internet