T Ullas wrote:

We are trying to have a setup of similar type and want to see if any others here in India are doing similar activity. Any Information.

So you are looking to setup a small time Wifi ISP (Freenetwork)?

I don't think it is problem as long as the anttena is in line of sight and signal strength is greater than -10 db

Regards

On Wednesday 28 July 2004 17:32, T Ullas wrote:

...

So you are looking to setup a small time Wifi ISP (Freenetwork)?

I don't think it is problem as long as the anttena is in line of sight and signal strength is greater than -10 db

Its in a preliminary stage only. I do not know about the legal side of using this technology. Anyone aware of it.

U are not allowed to do an omnidirectional broadcast in the 2.5Ghz band (u will screw up everbody elses rx/tx). Licence fee for point to point link is/was Rs75000/-. U require cleareance from the DOT WPC division and NOC from the police for yourself and for your client. U would have to obtain SACFA clearance for location of antenna if antenna height exceeds 3 mtrs above the sea level or above building terrace.

And what about various goverment agencies involved for such a project to setup apart from Department if IT. Does it come under say FCC etc. Also Would such a project be subjected to say some ISP act or something.

If u are an ISP u have to use the 5GHz band. Connect the 2.5Ghz card o/p to an upconverter and PA to generate 5Ghz.

Actually this is intended to be a community project only and not commercial as such. But there would be a small fee to join such a community and as such it will not be free in that sense.

That is a commercial venture and will cost u substantially more in licence fees, to be paid to the DOT WPC.

However afaik the wpc is not monitoring the 2.5Ghz band. And point to point links go undetected.

and if u wanna go global try 25Ghz moon bounce. Or 150 /300bps shortwave with a 200w pa. Plaintext mails properly trimmed or text chats should work well.

On Wednesday 28 July 2004 19:29, T Ullas wrote:

I do not know what is meaning of omnidirectional broadcast. Actually the server and client will be both be communicating and that is bidirectional, correct me if i am wrong.

Pleeease first get your terminology correct. What server client are u talking about??? you want to implement a physical medium for providing connectivity full stop. That is the same as sticking a wire between two points - no server no client. On top of this wire you want to put some protocol to prevent simultaneous transmissions (collision) signal strength, error handling etc this is achieved by using software which implements the 802.11 standards. The 'wire' and the software together constitute an access point.

You also need to read some basic radio and antenna stuff before even thinking of messing around with broadband on a medium which was never meant to operate outside your four walls. But just to increase the snr of this mail omnidirectional means all points of the compass and refers to physical area. Bidirectional means two way and the 'direction' in bidirection is misleading. The correct terminology for what u are trying to say is full duplex. No, wi fi connections are not full duplex. They are half duplex. That's because the transmit and recieve antennas and the transmit and recieve frequencies are in such close proximity that the reciever will be totally saturated with it's own transmission.

No i am not going to be a ISP. Project need to be a community project just like HAM radios, but in 2.5 Gz range

There is no provision for HAM ISPs. Well most of are isps are real ham handed anyways.

No moon bounce will be very slow. It take off the fun of multimedia Internet.

Jeez that was supposed to be humour. Any ways moon bounce is not slow, particularly when compared to our internet access. Multimedia on wifi?? do please read a lot before sticking your neck on this one. An mpeg4 video requires a peak BW of 7Mbps and latency of 2 to 3 mS. Not to mention very error free medium. At best u could broadcast a single video in a room. So perish the thought of multimedia "experience". U could try OFDM which would give you 45Mbps. But the cost would be so prohibitive that u are better off distributing dvds.

On Wed, 28 Jul 2004, T. Ullas spake thusly:

I do not know what is meaning of omnidirectional broadcast. Actually the server and client will be both be communicating and that is bidirectional, correct me if i am wrong.

`omnidirectional` was referring to the antenna. We have directional antennas which broadcast in a narrow cone to optimise power and omnidirectional ones which broadcast ~360deg for greater accessibility.

Their are Around 27 Government Agencies for a wireless license, involved in India. The license has to be obtained from TRAI, Delhi. Application forms for which can be obtained from mumbai as well. The Licensing structure is as follows Rs.5,000 per link per annum < 5 K.M. Rs.18,000 per link per annum > 5 K.M. No Idea on a Wi-Fi acces point licensee, but aware that Only gateway services has been given this Licensee to operate upto from greater mumbai to seepz mumbai.

Some of the proprietary Wireless providers like Adino, Spanco etc. provide u with an demo licensee, which is useless for u. And for ISP, u have three groups of licensees, also from TRAI. application forms cost Rs.5,000/- Category 'A' For an all india national License, may run into 30-40 lakhs as bank guarantee. Category 'B' near to 10 lakhs as bank guarantee annum, for the four metroplois, including banglore,hyderabad and may be pune. Category 'C' for other than places mentioned in 'B' and cost 3.5 lakhs as an Bank guarantee.

NO major ISP would provide u with bandwidt to distribute without an ISP licensee.

Regards Yayati.

On Wed, 2004-07-28 at 17:32, T Ullas wrote:

...

So you are looking to setup a small time Wifi ISP (Freenetwork)?

Its in a preliminary stage only. I do not know about the legal side of using this technology. Anyone aware of it. And what about various goverment agencies involved for such a project to setup apart from Department if IT. Does it come under say FCC etc. Also Would such a project be subjected to say some ISP act or something.

On Wednesday 28 July 2004 16:37, T Ullas wrote: What u want is an access point with a power amp ("Wi Fi server" is a non existent entity) and omnidirectional antenna. With a 400 mw PA u will get a LOS distance of about 2.5km. And the maximum bandwidth u get with 802.11b is 11mbps, wich drops quickly to 2 mbps beyond a few 100 mtrs. And the wep security is a piece of rubbish.

Yes. But here we are going for a optical network connectivity to ISP with sizable amount of bandwidth. It will broadcast in 2.5 Gz microwave and clients of say a small town with appropriate device can log on to the network

that still does not change the fact that you require a simple accesspoint on steroids.

Have a look at http://www.e3.com.au/ if you want more info.

We are trying to have a setup of similar type and want to see if any others here in India are doing similar activity. Any Information.

IIT khargpur. Quite hackneyed and oldhat.

However using this setup by linking many 802.11 nodes with mobility and voip is what is new and hot. U will be able to get rid of cellphone bills and have bandwidth and voice clarity that would be the envy of 4G users in Tokyo. U cant charge a paisa though cause that would make u and your "gang " criminals (as per DOT rules), since u would be providing a commercial service without paying our dearest old government any licence fee. Linux provides the perfect base with the iptables infrastructure and Optimized Link State Routing Protocol (OLSR) for setting up Mobile AdHoc Networks.

Dear ullas,

Wifi ...sounds good. What exactly u want to do ? you can setup wireless links with cisco /prism cards./dlink ap if you want low cost commercial solution then i can provide u. we are using this things and if u r really interested in this get back to me..

Regards, joel n.solanki On Wed, 2004-07-28 at 16:37, T Ullas wrote:

--- jtd jtdsouza@softhome.net wrote:

...

On Wednesday 28 July 2004 15:34, T Ullas wrote:

...

Hi

Has any one setup a linux based WiFi Server. Can

you

...

share your knowledge like which hardware is used

and

...

other issues.

What is a Wi Fi server? Afaik u have an 802.11 / 12 B/G accesspoint connected to a lan on which reside your hosts providing various services.

Yes. But here we are going for a optical network connectivity to ISP with sizable amount of bandwidth. It will broadcast in 2.5 Gz microwave and clients of say a small town with appropriate device can log on to the network

Have a look at http://www.e3.com.au/ if you want more info.

We are trying to have a setup of similar type and want to see if any others here in India are doing similar activity. Any Information.

T.Ullas

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Hey Ullas,

Yes. But here we are going for a optical network connectivity to ISP with sizable amount of bandwidth. It will broadcast in 2.5 Gz microwave and clients of say a small town with appropriate device can log on to the network

Have a look at http://www.e3.com.au/ if you want more info.

We are trying to have a setup of similar type and want to see if any others here in India are doing similar activity. Any Information.

Something like this in India is far to reach yet, primarliy due to DOT regulations, the deal becomes too expensive to provide service, where you have to compete with local cable operators who provide connection ranging from INR 200 - 1000/month.

AFAIK, there is one company named Titan Broadband who provides Wireless Leased Connectivity, termination happens at the customer premises over the Antenna --> Router (but this whole process is to replace the time it takes to get a Wired Leased connectivity + saving the telephone charges which occurs in case of wired Leased connection. still out of reach for normal home user) Any ways this company has been bought over by Reliance now, so do not know if they are still in business though.

Let me know if you need more information regarding the same, Best Regards, Mitul Limbani CTO, Enterux Solutions The Enterprise Linux Company (TM) http://www.enterux.com/

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