RE: [WIRELESS-LAN] anyone try an ap-8 yet?
Thanks for the feedback. I did a couple google searches, but didn't find anybody else complaining of the same problem. Strangely though, our radios worked fine for a few months, then went wacky beyond the point of being functional, then went back to working fine again. I'm reasonable sure that none of our efforts are what corrected the problem. I'm interested to see if anyone else had the same problem with AP-3 g radios. Regarding PoE testing, it isn't really to solve a problem but to assist our troubleshooting. We questioned the power quality when we were having our signal problem, but had no good way to test our midspan power supplies. I'm sure we're going to encounter the "is it the device or is it the power" question again and would like to have a better way to test the power. My web searches haven't turned anything up, but I haven't got around to emailing any test equipment manufacturers yet. I was hoping somebody out there could save me the trouble. Chuck -Original Message- From: Michael Griego [mailto:[EMAIL PROTECTED] Sent: Monday, July 26, 2004 5:08 PM To: [EMAIL PROTECTED] Subject: Re: [WIRELESS-LAN] anyone try an ap-8 yet? To answer your first question, yes we have seen the same wildly fluctuating signal strengths from the G upgrade kits in the AP-2000s. In my environments, the radios perform the same regardless of whether they are on PoE or connected to the AC power supply. From my various reading, Proxim does not follow the reference spec for the Atheros radious that they use in both their client and AP products. My assumption is that they have foobared something in their custom implementation as I have had problems with the Atheros-based client products as well. As an aside, I don't have much experience with the 802.11a kits in the AP-2000s. We only have 2 802.11a-capable spots on campus (and those only because we were told to "get an A presence somewhere", likely for political reasons). Anyway, there you have it. In my tests with the AP-4000s, the *first* thing I noticed was that the G performance was actually stable. As to your second question, I'm not completely sure what it is that you're asking. Are you having problems with a particular 802.3af power supply? There have been a couple of issues with Proxim APs and the PoE as well. For instance, there was a service bulletin released for AP-2000s with board revisions of H or lower where, if both a G and A card were used (to achieve a tri-mode AP), the AP would continually reboot. The soft-fuse in the device was calibrated too low for the current draw for the AP and both of those devices. The solution to that was simply to use a PoE splitter with those devices. Also, I don't know if you're using the Proxim or Avaya PoE injectors, but if you are, they're generally rated to deliver 11 watts per port. --Mike On Mon, 2004-07-26 at 15:07, Enfield, Chuck wrote: > Mike, > > Your reply leads me to believe you may have had some problems with 802.11g > on an AP-2000 or AP-3. We had some difficulties with wildly fluctuating > signal strengths on our AP-3/802.11ag test LAN and were wondering if anyone > else experienced similar difficulties? Our problem seemed to pass before we > could adequately dignose it. Due to a concurrent temperature problem in our > equipment room, we couldn't be certain if the problem was AP/radio related > or POE power related. > > Which brings me to a second question: does anyone know a way to test 802.3af > power quality? It is pretty easy to test the voltage using a break-out > cable and multimeter, but much harder to determine the current delivery > capacity. We can't be sure if a small measured current is due to a defective > power supply or just low demand from the AP. Is there a cable tester, > network analyzer, or a single-purpose unit that will put an 802.3af power > supply through its paces? > > Thanks, > > Chuck Enfield > Sr. Communications Engineer > PSU, Information Technology Services > Suite 110, University Support Bldg. 2 > University Park, PA 16802 > ph. (814) 863-8715 > fx. (814) 865-3988 > > > -Original Message- > From: Michael Griego [mailto:[EMAIL PROTECTED] > Sent: Monday, July 26, 2004 9:57 AM > To: [EMAIL PROTECTED] > Subject: Re: [WIRELESS-LAN] anyone try an ap-8 yet? > > It's the same product as the Proxim AP-4000. If you're using the > Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The .11G > performance in my testing has been more solid than the performance of > the .11G upgrade kit for the AP-2000 (Avaya AP-3). Other than that, the > management interface is identical to the AP-2000/AP-3. Having antenna > connectors for the .11A side is a nice new feature of the 4000s/8s. > > -- > > --Mike > > --- > Michael Griego > Wireless LAN Project Manager > The University of Texas at Dallas > > > > On Mon, 2004-07-26 at 08:23, Matt Ashfield (UNB) wrote: > > Hi All > > > > We currently use Avaya's Access Points on ou
Re: [WIRELESS-LAN] anyone try an ap-8 yet?
To answer your first question, yes we have seen the same wildly fluctuating signal strengths from the G upgrade kits in the AP-2000s. In my environments, the radios perform the same regardless of whether they are on PoE or connected to the AC power supply. From my various reading, Proxim does not follow the reference spec for the Atheros radious that they use in both their client and AP products. My assumption is that they have foobared something in their custom implementation as I have had problems with the Atheros-based client products as well. As an aside, I don't have much experience with the 802.11a kits in the AP-2000s. We only have 2 802.11a-capable spots on campus (and those only because we were told to "get an A presence somewhere", likely for political reasons). Anyway, there you have it. In my tests with the AP-4000s, the *first* thing I noticed was that the G performance was actually stable. As to your second question, I'm not completely sure what it is that you're asking. Are you having problems with a particular 802.3af power supply? There have been a couple of issues with Proxim APs and the PoE as well. For instance, there was a service bulletin released for AP-2000s with board revisions of H or lower where, if both a G and A card were used (to achieve a tri-mode AP), the AP would continually reboot. The soft-fuse in the device was calibrated too low for the current draw for the AP and both of those devices. The solution to that was simply to use a PoE splitter with those devices. Also, I don't know if you're using the Proxim or Avaya PoE injectors, but if you are, they're generally rated to deliver 11 watts per port. --Mike On Mon, 2004-07-26 at 15:07, Enfield, Chuck wrote: > Mike, > > Your reply leads me to believe you may have had some problems with 802.11g > on an AP-2000 or AP-3. We had some difficulties with wildly fluctuating > signal strengths on our AP-3/802.11ag test LAN and were wondering if anyone > else experienced similar difficulties? Our problem seemed to pass before we > could adequately dignose it. Due to a concurrent temperature problem in our > equipment room, we couldn't be certain if the problem was AP/radio related > or POE power related. > > Which brings me to a second question: does anyone know a way to test 802.3af > power quality? It is pretty easy to test the voltage using a break-out > cable and multimeter, but much harder to determine the current delivery > capacity. We can't be sure if a small measured current is due to a defective > power supply or just low demand from the AP. Is there a cable tester, > network analyzer, or a single-purpose unit that will put an 802.3af power > supply through its paces? > > Thanks, > > Chuck Enfield > Sr. Communications Engineer > PSU, Information Technology Services > Suite 110, University Support Bldg. 2 > University Park, PA 16802 > ph. (814) 863-8715 > fx. (814) 865-3988 > > > -Original Message- > From: Michael Griego [mailto:[EMAIL PROTECTED] > Sent: Monday, July 26, 2004 9:57 AM > To: [EMAIL PROTECTED] > Subject: Re: [WIRELESS-LAN] anyone try an ap-8 yet? > > It's the same product as the Proxim AP-4000. If you're using the > Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The .11G > performance in my testing has been more solid than the performance of > the .11G upgrade kit for the AP-2000 (Avaya AP-3). Other than that, the > management interface is identical to the AP-2000/AP-3. Having antenna > connectors for the .11A side is a nice new feature of the 4000s/8s. > > -- > > --Mike > > --- > Michael Griego > Wireless LAN Project Manager > The University of Texas at Dallas > > > > On Mon, 2004-07-26 at 08:23, Matt Ashfield (UNB) wrote: > > Hi All > > > > We currently use Avaya's Access Points on our campus, and the latest > product > > they've released is the AP-8. I've read the pdf's and heard the supplier's > > details, but just thought I'd ask this group if anyone has used it and if > > so, what are their impressions? > > > > Any info you can provide is greatly appreciated. > > > > Thanks > > > > Matthew Ashfield > > Network Analyst > > Integrated Technology Services > > University of New Brunswick > > (506) 447-3033 > > > > ** > > Participation and subscription information for this EDUCAUSE Constituent > Group discussion list can be found at http://www.educause.edu/cg/. > > ** > Participation and subscription information for this EDUCAUSE Constituent > Group discussion list can be found at http://www.educause.edu/cg/. > > ** > Participation and subscription information for this EDUCAUSE Constituent Group > discussion list can be found at http://www.educause.edu/cg/. -- --Mike --- Michael Griego Wireless LAN Project Manager The University of Texas at Dallas ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://
RE: [WIRELESS-LAN] WiFi hotspot walled garden software?
We're using the Shasta from Nortel - it's billed partially as a 'guest access' device - using it to make Wireless users and soon, ResNet users log in with username and password in place of registering their mac addresses. -fp From: 802.11 wireless issues listserv [mailto:[EMAIL PROTECTED] On Behalf Of Pete HoffswellSent: Monday, July 26, 2004 3:22 PMTo: [EMAIL PROTECTED]Subject: [WIRELESS-LAN] WiFi hotspot walled garden software? Hello - What's everyone using to manage access into their public/quasi-public WiFi infrastructures? We are interested in a self-serve type system, such as what you see in hotels and airports. Netreg would be great, but we use Novell DNS services. I'm unsure if it would work for us. Cisco's BBSM (BroadBand Service manager) would fit the bill, but costs a few (bills) We are completely Cisco Accesspoints, and serve protected and unprotected wlans to our students and staff. Current plans to expand the system will make our current Cisco Secure ACS centralized mac address authentication system too cumbersome. Any ideas? Pete Hoffswell 616-732-1101 (Grand Rapids, x1101)University LAN/WAN Coordinator 616-510-1198 (Mobile)IT Services [EMAIL PROTECTED]Davenport University http://www.davenport.edu -=-=- LAN/WAN services: http://networker.davenport.edu -=-=-** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
RE: [WIRELESS-LAN] WiFi hotspot walled garden software?
IP3 and nomdix has a good solution that I have worked with in the past. They have very robust cost effective solutions. Stanley Riley Sr. Wireless Architect ABEO Corporation (703)842-5475 (office) (571)238-5415 (mobile) www.abeocorp.com -Original Message-From: 802.11 wireless issues listserv [mailto:[EMAIL PROTECTED]On Behalf Of Pete HoffswellSent: Monday, July 26, 2004 4:22 PMTo: [EMAIL PROTECTED]Subject: [WIRELESS-LAN] WiFi hotspot walled garden software? Hello - What's everyone using to manage access into their public/quasi-public WiFi infrastructures? We are interested in a self-serve type system, such as what you see in hotels and airports. Netreg would be great, but we use Novell DNS services. I'm unsure if it would work for us. Cisco's BBSM (BroadBand Service manager) would fit the bill, but costs a few (bills) We are completely Cisco Accesspoints, and serve protected and unprotected wlans to our students and staff. Current plans to expand the system will make our current Cisco Secure ACS centralized mac address authentication system too cumbersome. Any ideas? Pete Hoffswell 616-732-1101 (Grand Rapids, x1101)University LAN/WAN Coordinator 616-510-1198 (Mobile)IT Services [EMAIL PROTECTED]Davenport University http://www.davenport.edu -=-=- LAN/WAN services: http://networker.davenport.edu -=-=-** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
WiFi hotspot walled garden software?
Hello - What's everyone using to manage access into their public/quasi-public WiFi infrastructures? We are interested in a self-serve type system, such as what you see in hotels and airports. Netreg would be great, but we use Novell DNS services. I'm unsure if it would work for us. Cisco's BBSM (BroadBand Service manager) would fit the bill, but costs a few (bills) We are completely Cisco Accesspoints, and serve protected and unprotected wlans to our students and staff. Current plans to expand the system will make our current Cisco Secure ACS centralized mac address authentication system too cumbersome. Any ideas? Pete Hoffswell 616-732-1101 (Grand Rapids, x1101)University LAN/WAN Coordinator 616-510-1198 (Mobile)IT Services [EMAIL PROTECTED]Davenport University http://www.davenport.edu -=-=- LAN/WAN services: http://networker.davenport.edu -=-=- ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
RE: [WIRELESS-LAN] anyone try an ap-8 yet?
Mike, Your reply leads me to believe you may have had some problems with 802.11g on an AP-2000 or AP-3. We had some difficulties with wildly fluctuating signal strengths on our AP-3/802.11ag test LAN and were wondering if anyone else experienced similar difficulties? Our problem seemed to pass before we could adequately dignose it. Due to a concurrent temperature problem in our equipment room, we couldn't be certain if the problem was AP/radio related or POE power related. Which brings me to a second question: does anyone know a way to test 802.3af power quality? It is pretty easy to test the voltage using a break-out cable and multimeter, but much harder to determine the current delivery capacity. We can't be sure if a small measured current is due to a defective power supply or just low demand from the AP. Is there a cable tester, network analyzer, or a single-purpose unit that will put an 802.3af power supply through its paces? Thanks, Chuck Enfield Sr. Communications Engineer PSU, Information Technology Services Suite 110, University Support Bldg. 2 University Park, PA 16802 ph. (814) 863-8715 fx. (814) 865-3988 -Original Message- From: Michael Griego [mailto:[EMAIL PROTECTED] Sent: Monday, July 26, 2004 9:57 AM To: [EMAIL PROTECTED] Subject: Re: [WIRELESS-LAN] anyone try an ap-8 yet? It's the same product as the Proxim AP-4000. If you're using the Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The .11G performance in my testing has been more solid than the performance of the .11G upgrade kit for the AP-2000 (Avaya AP-3). Other than that, the management interface is identical to the AP-2000/AP-3. Having antenna connectors for the .11A side is a nice new feature of the 4000s/8s. -- --Mike --- Michael Griego Wireless LAN Project Manager The University of Texas at Dallas On Mon, 2004-07-26 at 08:23, Matt Ashfield (UNB) wrote: > Hi All > > We currently use Avaya's Access Points on our campus, and the latest product > they've released is the AP-8. I've read the pdf's and heard the supplier's > details, but just thought I'd ask this group if anyone has used it and if > so, what are their impressions? > > Any info you can provide is greatly appreciated. > > Thanks > > Matthew Ashfield > Network Analyst > Integrated Technology Services > University of New Brunswick > (506) 447-3033 > > ** > Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
Re: [WIRELESS-LAN] anyone try an ap-8 yet?
We carry a big line of antennas too. http://www.superpass.com/products.html John SuperPass Tel: (519)886-5186 Fax: (519)886-5314 Email: [EMAIL PROTECTED] http://www.superpass.com - Original Message - From: "Michael Griego" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, July 26, 2004 1:11 PM Subject: Re: [WIRELESS-LAN] anyone try an ap-8 yet? > http://www.hyperlinktech.com/web/antennas_5800.php > > It's always legal to use an external antenna as long as the EIRP does > not exceed regulations (36dBm, or 4 watts normally). The FCC has, > however, added extra regulations in recent years pertaining to who can > purchase amplifiers. End users are required to purchase > amplifier/antenna kits so as to not exceed EIRP limits. > > -- > > --Mike > > --- > Michael Griego > Wireless LAN Project Manager > The University of Texas at Dallas > > > > On Mon, 2004-07-26 at 12:00, Chris Hessing wrote: > > I find the 802.11a antenna connection to be interesting. I have had > > several vendors give me different stories about 802.11a antennas on APs. > > Does anyone know if using the 802.11a antennas is legal in the US? (Or > > was the port put on there for use by other countries.) And if it is > > legal, where can you get antennas for it? I spoke with Maxrad at > > Interop, and they didn't seem to have any antennas that would do it. > > > > Thanks! > > > > -- > > Chris "Spanky" Hessing Networking > >University of Utah > > [EMAIL PROTECTED] Marriott Library > > > > Friends are people that know everything about you, but love you anyway. > > > > > > > > > > > > On Mon, 26 Jul 2004, Michael Griego wrote: > > > > > It's the same product as the Proxim AP-4000. If you're using the > > > Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The .11G > > > performance in my testing has been more solid than the performance of > > > the .11G upgrade kit for the AP-2000 (Avaya AP-3). Other than that, the > > > management interface is identical to the AP-2000/AP-3. Having antenna > > > connectors for the .11A side is a nice new feature of the 4000s/8s. > > > > > > -- > > > > > > --Mike > > > > > > --- > > > Michael Griego > > > Wireless LAN Project Manager > > > The University of Texas at Dallas > > > > > > > > > > > > On Mon, 2004-07-26 at 08:23, Matt Ashfield (UNB) wrote: > > > > Hi All > > > > > > > > We currently use Avaya's Access Points on our campus, and the latest product > > > > they've released is the AP-8. I've read the pdf's and heard the supplier's > > > > details, but just thought I'd ask this group if anyone has used it and if > > > > so, what are their impressions? > > > > > > > > Any info you can provide is greatly appreciated. > > > > > > > > Thanks > > > > > > > > Matthew Ashfield > > > > Network Analyst > > > > Integrated Technology Services > > > > University of New Brunswick > > > > (506) 447-3033 > > > > > > > > ** > > > > Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. > > > > > > ** > > > Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. > > > > > > > ** > > Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. > > ** > Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
Re: [WIRELESS-LAN] anyone try an ap-8 yet?
This has been an interesting thread. The statements / quotes from Part 15 are correct. However, on July 12, 2004 the FCC issued a report and order that affects Part 15 devices. Some previous statements require modification based on the report and order. The report and order is available on the FCC web site. If after reading the report, you wish a second opinion, please send a private email and I would be happy to give you my interpretation as it relates to WLAN end-users. Dennis Ward RF / Wireless Engineer University of Michigan On Jul 26, 2004, at 2:17 PM, E.J. Von Schaumburg wrote: - 802.11b - FCC 15.247 3.1.1 - Point to Multi-point For 802.11b point to multi-point uses, you are allowed up to 30 dBm or 1 watt of Transmitter Power Output (TPO) with a 6 dBi antenna or 36 dBm or 4 watts Effective Radiated Power over an isotropic antenna (EIRP). The TPO needs to be reduced 1 dB for every dB of antenna gain over 6 dBi. 3.1.2 - Point to Point For 802.11b point-to-point uses, the FCC encourages directional antennas to minimize interference to other users. The FCC in fact is more lenient with point-to-point links, as it only requires the TPO to be reduced by 1/3 of a dB as compared to a full dB for point to multipoint. More specifically, for every 3 dB of antenna gain over a 6 dBi antenna, you need to reduce the TPO 1 dB below 1 watt. For example, a 24 dBi antenna is 18 dB over a 6 dBi antenna. You would have to lower a 1 watt (30 dBm) transmitter 18/3 or 6 dB to 24 dBm or ¼ watt. - 802.11a - FCC 15.407 3.2.1 - Point to Multi-point As described before, the U-NII band, which is used for 802.11a point to multi-point, is chopped into three sections. The "low" band runs from 5.15 GHz to 5.25 GHz, and has a maximum power of 50 mW (TPO). This band is meant to be in-building only, as defined by the FCC's Rules and Regulations Part 15.407 (d) and (e): (d) Any U-NII device that operates in the 5.15-5.25 GHz band shall use a transmitting antenna that is an integral part of the device. (e) Within the 5.15-5.25 GHz band, U-NII devices will be restricted to indoor operations to reduce any potential for harmful interference to co-channel MSS operations. The "middle" band runs from 5.25 GHz to 5.35 GHz, with a maximum power limit of 250 mW. Finally the "high" band runs from 5.725 GHz to 5.825 GHz, with a maximum transmitter power of 1 watt and antenna gain of 6 dBi or 36 dBm or 4 watts EIRP. 3.2.2 - Point to Point As with 802.11b, the FCC does give some latitude to 802.11a point-to-point links in Regulation 15.407(a)(3). For the 5.725 GHz to 5.825 GHz band, the FCC allows a TPO of 1 watt and up to a 23 dBi gain antenna without reducing the TPO 1 dB for every 1 dB of gain over 23 dBi. Regulation 15.247(b)(3)(ii) does allow the use of any gain antenna for point-to-point operations without reducing the TPO for the 5.725 GHz to 5.825 GHz band. You should look at the part your equipment is certified under to see what restrictions you have for EIRP. Some definitions: Effective Isotropic Radiated Power (EIRP): A measure of a signal's absolute power in a particular direction (see ERP), but relative to an isotrope rather than a dipole. Effective Radiated Power (ERP): The product of the transmitter peak envelope power, expressed in Watts, delivered to the antenna, and the relative gain of the antenna over that of a half wave dipole antenna Isotropic: A theoretical "isotrope" is a single point in free space which radiates energy equally in every direction. An isotrpoic antenna is a perfect antenna and thus does not exist. E.J. von Schaumburg Executive Vice President, Business Development [EMAIL PROTECTED] office: (973) 659-9009 mobile: (973) 879-4408 fax: (973) 659-0334 www.wpcs.com 3175 Route 10 East Suite 300 Denville, NJ 07844 Freedom thru thin air (tm) -Original Message- From: Michael Griego [mailto:[EMAIL PROTECTED] Sent: Monday, July 26, 2004 1:11 PM To: [EMAIL PROTECTED] Subject: Re: [WIRELESS-LAN] anyone try an ap-8 yet? http://www.hyperlinktech.com/web/antennas_5800.php It's always legal to use an external antenna as long as the EIRP does not exceed regulations (36dBm, or 4 watts normally). The FCC has, however, added extra regulations in recent years pertaining to who can purchase amplifiers. End users are required to purchase amplifier/antenna kits so as to not exceed EIRP limits. -- --Mike --- Michael Griego Wireless LAN Project Manager The University of Texas at Dallas On Mon, 2004-07-26 at 12:00, Chris Hessing wrote: I find the 802.11a antenna connection to be interesting. I have had several vendors give me different stories about 802.11a antennas on APs. Does anyone know if using the 802.11a antennas is legal in the US? (Or was the port put on there for use by other countries.) And if it is legal, where can you get antennas for it? I spoke with Maxrad at Interop, and they didn't seem to have any antennas that would do it.
Re: [WIRELESS-LAN] anyone try an ap-8 yet?
Chris: This URL: http://wifinetnews.com/archives/004024.html reviews some recent rulings from the FCC concerning antennas, and talks a bit about a relaxing in the 5 GHz spectrum that allows antennas in all three UNII bands (4th last paragraph) Frank>>> [EMAIL PROTECTED] Monday, July 26, 2004 1:00:15 pm >>>I find the 802.11a antenna connection to be interesting. I have hadseveral vendors give me different stories about 802.11a antennas on APs.Does anyone know if using the 802.11a antennas is legal in the US? (Orwas the port put on there for use by other countries.) And if it islegal, where can you get antennas for it? I spoke with Maxrad atInterop, and they didn't seem to have any antennas that would do it.Thanks!--Chris "Spanky" Hessing NetworkingUniversity of Utah[EMAIL PROTECTED] Marriott LibraryFriends are people that know everything about you, but love you anyway.On Mon, 26 Jul 2004, Michael Griego wrote:> It's the same product as the Proxim AP-4000. If you're using the> Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The .11G> performance in my testing has been more solid than the performance of> the .11G upgrade kit for the AP-2000 (Avaya AP-3). Other than that, the> management interface is identical to the AP-2000/AP-3. Having antenna> connectors for the 11A side is a nice new feature of the 4000s/8s.>> -->> --Mike>> ---> Michael Griego> Wireless LAN Project Manager> The University of Texas at Dallas On Mon, 2004-07-26 at 08:23, Matt Ashfield (UNB) wrote:> > Hi All> >> > We currently use Avaya's Access Points on our campus, and the latest product> > they've released is the AP-8. I've read the pdf's and heard the supplier's> > details, but just thought I'd ask this group if anyone has used it and if> > so, what are their impressions?> >> > Any info you can provide is greatly appreciated.> >> > Thanks> >> > Matthew Ashfield> > Network Analyst> > Integrated Technology Services> > University of New Brunswick> > (506) 447-3033> >> > **> > Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/ .>> **> Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/ .>**Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/ . ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
RE: [WIRELESS-LAN] anyone try an ap-8 yet?
- 802.11b - FCC 15.247 3.1.1 - Point to Multi-point For 802.11b point to multi-point uses, you are allowed up to 30 dBm or 1 watt of Transmitter Power Output (TPO) with a 6 dBi antenna or 36 dBm or 4 watts Effective Radiated Power over an isotropic antenna (EIRP). The TPO needs to be reduced 1 dB for every dB of antenna gain over 6 dBi. 3.1.2 - Point to Point For 802.11b point-to-point uses, the FCC encourages directional antennas to minimize interference to other users. The FCC in fact is more lenient with point-to-point links, as it only requires the TPO to be reduced by 1/3 of a dB as compared to a full dB for point to multipoint. More specifically, for every 3 dB of antenna gain over a 6 dBi antenna, you need to reduce the TPO 1 dB below 1 watt. For example, a 24 dBi antenna is 18 dB over a 6 dBi antenna. You would have to lower a 1 watt (30 dBm) transmitter 18/3 or 6 dB to 24 dBm or ¼ watt. - 802.11a - FCC 15.407 3.2.1 - Point to Multi-point As described before, the U-NII band, which is used for 802.11a point to multi-point, is chopped into three sections. The "low" band runs from 5.15 GHz to 5.25 GHz, and has a maximum power of 50 mW (TPO). This band is meant to be in-building only, as defined by the FCC's Rules and Regulations Part 15.407 (d) and (e): (d) Any U-NII device that operates in the 5.15-5.25 GHz band shall use a transmitting antenna that is an integral part of the device. (e) Within the 5.15-5.25 GHz band, U-NII devices will be restricted to indoor operations to reduce any potential for harmful interference to co-channel MSS operations. The "middle" band runs from 5.25 GHz to 5.35 GHz, with a maximum power limit of 250 mW. Finally the "high" band runs from 5.725 GHz to 5.825 GHz, with a maximum transmitter power of 1 watt and antenna gain of 6 dBi or 36 dBm or 4 watts EIRP. 3.2.2 - Point to Point As with 802.11b, the FCC does give some latitude to 802.11a point-to-point links in Regulation 15.407(a)(3). For the 5.725 GHz to 5.825 GHz band, the FCC allows a TPO of 1 watt and up to a 23 dBi gain antenna without reducing the TPO 1 dB for every 1 dB of gain over 23 dBi. Regulation 15.247(b)(3)(ii) does allow the use of any gain antenna for point-to-point operations without reducing the TPO for the 5.725 GHz to 5.825 GHz band. You should look at the part your equipment is certified under to see what restrictions you have for EIRP. Some definitions: Effective Isotropic Radiated Power (EIRP): A measure of a signal's absolute power in a particular direction (see ERP), but relative to an isotrope rather than a dipole. Effective Radiated Power (ERP): The product of the transmitter peak envelope power, expressed in Watts, delivered to the antenna, and the relative gain of the antenna over that of a half wave dipole antenna Isotropic: A theoretical "isotrope" is a single point in free space which radiates energy equally in every direction. An isotrpoic antenna is a perfect antenna and thus does not exist. E.J. von Schaumburg Executive Vice President, Business Development [EMAIL PROTECTED] office: (973) 659-9009 mobile: (973) 879-4408 fax: (973) 659-0334 www.wpcs.com 3175 Route 10 East Suite 300 Denville, NJ 07844 Freedom thru thin air (tm) -Original Message- From: Michael Griego [mailto:[EMAIL PROTECTED] Sent: Monday, July 26, 2004 1:11 PM To: [EMAIL PROTECTED] Subject: Re: [WIRELESS-LAN] anyone try an ap-8 yet? http://www.hyperlinktech.com/web/antennas_5800.php It's always legal to use an external antenna as long as the EIRP does not exceed regulations (36dBm, or 4 watts normally). The FCC has, however, added extra regulations in recent years pertaining to who can purchase amplifiers. End users are required to purchase amplifier/antenna kits so as to not exceed EIRP limits. -- --Mike --- Michael Griego Wireless LAN Project Manager The University of Texas at Dallas On Mon, 2004-07-26 at 12:00, Chris Hessing wrote: > I find the 802.11a antenna connection to be interesting. I have had > several vendors give me different stories about 802.11a antennas on > APs. Does anyone know if using the 802.11a antennas is legal in the > US? (Or was the port put on there for use by other countries.) And if it is > legal, where can you get antennas for it? I spoke with Maxrad at > Interop, and they didn't seem to have any antennas that would do it. > > Thanks! > > -- > Chris "Spanky" Hessing Networking >University of Utah > [EMAIL PROTECTED] Marriott Library > > Friends are people that know everything about you, but love you > anyway. > > > > > > On Mon, 26 Jul 2004, Michael Griego wrote: > > > It's the same product as the Proxim AP-4000. If you're using the > > Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The > > .11G performance in my testing has been more solid than the > > performance of the .11G upgrade kit
RE: [WIRELESS-LAN] anyone try an ap-8 yet?
The Part 15 requires integral antennas for the 5.15GHz to 5.25GHz (lower UNII) band, but allows the use of external antennas for the middle and upper band. Proxim, and I expect Avaya and the other OEMs, have two versions of that AP. The version with the 802.11a external antenna connectors does not allow the use of the four lower band channels. While there are still 8 channels available (4 middle and 4 upper), be aware that the upper band is where the 5.8GHz cordless phones operate. Due to FCC restrictions on the power levels of unlicensed "5GHz" radiators, I expect most future 5GHz consumer device to end up in this band as well. You should weigh the advantage of an external antenna against the availability of 8 relatively interference free (my opinion only) channels. Should you opt for the external antennas, Proxim markets at least two - one omni and one patch. When I last looked there was a small selection of broadband 5GHz antennae made for the outdoor market that I thought could be passably adapted to indoor use, but I can't recall any MFRs specifically. Chuck Enfield Sr. Communications Engineer PSU, Information Technology Services Suite 110, University Support Bldg. 2 University Park, PA 16802 ph. (814) 863-8715 fx. (814) 865-3988 -Original Message- From: Chris Hessing [mailto:[EMAIL PROTECTED] Sent: Monday, July 26, 2004 1:00 PM To: [EMAIL PROTECTED] Subject: Re: [WIRELESS-LAN] anyone try an ap-8 yet? I find the 802.11a antenna connection to be interesting. I have had several vendors give me different stories about 802.11a antennas on APs. Does anyone know if using the 802.11a antennas is legal in the US? (Or was the port put on there for use by other countries.) And if it is legal, where can you get antennas for it? I spoke with Maxrad at Interop, and they didn't seem to have any antennas that would do it. Thanks! -- Chris "Spanky" Hessing Networking University of Utah [EMAIL PROTECTED] Marriott Library Friends are people that know everything about you, but love you anyway. On Mon, 26 Jul 2004, Michael Griego wrote: > It's the same product as the Proxim AP-4000. If you're using the > Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The .11G > performance in my testing has been more solid than the performance of > the .11G upgrade kit for the AP-2000 (Avaya AP-3). Other than that, the > management interface is identical to the AP-2000/AP-3. Having antenna > connectors for the .11A side is a nice new feature of the 4000s/8s. > > -- > > --Mike > > --- > Michael Griego > Wireless LAN Project Manager > The University of Texas at Dallas > > > > On Mon, 2004-07-26 at 08:23, Matt Ashfield (UNB) wrote: > > Hi All > > > > We currently use Avaya's Access Points on our campus, and the latest product > > they've released is the AP-8. I've read the pdf's and heard the supplier's > > details, but just thought I'd ask this group if anyone has used it and if > > so, what are their impressions? > > > > Any info you can provide is greatly appreciated. > > > > Thanks > > > > Matthew Ashfield > > Network Analyst > > Integrated Technology Services > > University of New Brunswick > > (506) 447-3033 > > > > ** > > Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. > > ** > Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. > ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
Re: [WIRELESS-LAN] anyone try an ap-8 yet?
http://www.hyperlinktech.com/web/antennas_5800.php It's always legal to use an external antenna as long as the EIRP does not exceed regulations (36dBm, or 4 watts normally). The FCC has, however, added extra regulations in recent years pertaining to who can purchase amplifiers. End users are required to purchase amplifier/antenna kits so as to not exceed EIRP limits. -- --Mike --- Michael Griego Wireless LAN Project Manager The University of Texas at Dallas On Mon, 2004-07-26 at 12:00, Chris Hessing wrote: > I find the 802.11a antenna connection to be interesting. I have had > several vendors give me different stories about 802.11a antennas on APs. > Does anyone know if using the 802.11a antennas is legal in the US? (Or > was the port put on there for use by other countries.) And if it is > legal, where can you get antennas for it? I spoke with Maxrad at > Interop, and they didn't seem to have any antennas that would do it. > > Thanks! > > -- > Chris "Spanky" Hessing Networking >University of Utah > [EMAIL PROTECTED] Marriott Library > > Friends are people that know everything about you, but love you anyway. > > > > > > On Mon, 26 Jul 2004, Michael Griego wrote: > > > It's the same product as the Proxim AP-4000. If you're using the > > Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The .11G > > performance in my testing has been more solid than the performance of > > the .11G upgrade kit for the AP-2000 (Avaya AP-3). Other than that, the > > management interface is identical to the AP-2000/AP-3. Having antenna > > connectors for the .11A side is a nice new feature of the 4000s/8s. > > > > -- > > > > --Mike > > > > --- > > Michael Griego > > Wireless LAN Project Manager > > The University of Texas at Dallas > > > > > > > > On Mon, 2004-07-26 at 08:23, Matt Ashfield (UNB) wrote: > > > Hi All > > > > > > We currently use Avaya's Access Points on our campus, and the latest product > > > they've released is the AP-8. I've read the pdf's and heard the supplier's > > > details, but just thought I'd ask this group if anyone has used it and if > > > so, what are their impressions? > > > > > > Any info you can provide is greatly appreciated. > > > > > > Thanks > > > > > > Matthew Ashfield > > > Network Analyst > > > Integrated Technology Services > > > University of New Brunswick > > > (506) 447-3033 > > > > > > ** > > > Participation and subscription information for this EDUCAUSE Constituent Group > > > discussion list can be found at http://www.educause.edu/cg/. > > > > ** > > Participation and subscription information for this EDUCAUSE Constituent Group > > discussion list can be found at http://www.educause.edu/cg/. > > > > ** > Participation and subscription information for this EDUCAUSE Constituent Group > discussion list can be found at http://www.educause.edu/cg/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
Re: [WIRELESS-LAN] anyone try an ap-8 yet?
I find the 802.11a antenna connection to be interesting. I have had several vendors give me different stories about 802.11a antennas on APs. Does anyone know if using the 802.11a antennas is legal in the US? (Or was the port put on there for use by other countries.) And if it is legal, where can you get antennas for it? I spoke with Maxrad at Interop, and they didn't seem to have any antennas that would do it. Thanks! -- Chris "Spanky" Hessing Networking University of Utah [EMAIL PROTECTED] Marriott Library Friends are people that know everything about you, but love you anyway. On Mon, 26 Jul 2004, Michael Griego wrote: > It's the same product as the Proxim AP-4000. If you're using the > Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The .11G > performance in my testing has been more solid than the performance of > the .11G upgrade kit for the AP-2000 (Avaya AP-3). Other than that, the > management interface is identical to the AP-2000/AP-3. Having antenna > connectors for the .11A side is a nice new feature of the 4000s/8s. > > -- > > --Mike > > --- > Michael Griego > Wireless LAN Project Manager > The University of Texas at Dallas > > > > On Mon, 2004-07-26 at 08:23, Matt Ashfield (UNB) wrote: > > Hi All > > > > We currently use Avaya's Access Points on our campus, and the latest product > > they've released is the AP-8. I've read the pdf's and heard the supplier's > > details, but just thought I'd ask this group if anyone has used it and if > > so, what are their impressions? > > > > Any info you can provide is greatly appreciated. > > > > Thanks > > > > Matthew Ashfield > > Network Analyst > > Integrated Technology Services > > University of New Brunswick > > (506) 447-3033 > > > > ** > > Participation and subscription information for this EDUCAUSE Constituent Group > > discussion list can be found at http://www.educause.edu/cg/. > > ** > Participation and subscription information for this EDUCAUSE Constituent Group > discussion list can be found at http://www.educause.edu/cg/. > ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
Re: [WIRELESS-LAN] anyone try an ap-8 yet?
It's the same product as the Proxim AP-4000. If you're using the Proxim/Avaya equipment, then the AP-4000 is a good upgrade. The .11G performance in my testing has been more solid than the performance of the .11G upgrade kit for the AP-2000 (Avaya AP-3). Other than that, the management interface is identical to the AP-2000/AP-3. Having antenna connectors for the .11A side is a nice new feature of the 4000s/8s. -- --Mike --- Michael Griego Wireless LAN Project Manager The University of Texas at Dallas On Mon, 2004-07-26 at 08:23, Matt Ashfield (UNB) wrote: > Hi All > > We currently use Avaya's Access Points on our campus, and the latest product > they've released is the AP-8. I've read the pdf's and heard the supplier's > details, but just thought I'd ask this group if anyone has used it and if > so, what are their impressions? > > Any info you can provide is greatly appreciated. > > Thanks > > Matthew Ashfield > Network Analyst > Integrated Technology Services > University of New Brunswick > (506) 447-3033 > > ** > Participation and subscription information for this EDUCAUSE Constituent Group > discussion list can be found at http://www.educause.edu/cg/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
anyone try an ap-8 yet?
Hi All We currently use Avaya's Access Points on our campus, and the latest product they've released is the AP-8. I've read the pdf's and heard the supplier's details, but just thought I'd ask this group if anyone has used it and if so, what are their impressions? Any info you can provide is greatly appreciated. Thanks Matthew Ashfield Network Analyst Integrated Technology Services University of New Brunswick (506) 447-3033 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/cg/.
