Wednesday, August 12, 2009

Paris + WiFi = Free

Here's the Google Map of all the 260+ accesspoints:
(And the above website has loads of information on what else to do in Paris, with some information available in the English version of the website as well).

And here's how to signon :

Ok, if you needed help with that... here's the Google Translate output on the useful part:
1. Identify signage Paris Wi-Fi with Wi-Fi logo Paris
This indicates that you are in the area (of) an oasis Paris Wi-Fi
2. Turn on your Wi-Fi equipment
3. Select the Orange network.
4. Start your regular internet browser and type any website address (eg http://www.paris.fr).
5. Select your pass Paris wi-fi 2h offered by the City of Paris and the Ile de France
6. Now you can surf freely on the Internet, send and receive emails, and all this without needing to be connected in any way!

Saturday, December 27, 2008

Text Messaging Is Cheap?

Not sure if its the job of newspapers to spread or create conspiracy theories, but this article in the New York Times (which I love and read often) by Randall Stross is just half-baked. But it sells newspapers, so let's do it!

Mr. Stross figures out, with the help of experts, that the basic cost of text messaging alone is pretty low. A text message or SMS rides on the control channels that are used for communications between the cellphone and the base station and then go over wires from the base station to the core of the network. So we learn that, once the basic investment in the network is done... its all cream, he implies. Mr. Stross quotes another professor saying that the cost of transmitting 100 million messages is not much more than those for a million. 

Yeah, the basics about text messages are right. But are you going to build a network costing billions to send text messages? Ofcourse not, so to run a wireless network there are costs for voice minutes from initial spectrum cost of billions, tens of thousands of cell sites, cell site maintenance, equipment purchases, and many more. And now they are building faster data networks which also costs billions, and while these are growing fast - they don't make enough money. Recall the whining about the iPhone, in 2007, only having an EDGE (2.75G) connection. "Where's my 3G?" the press cried. And the $20 or $30, now, for the iPhone data connection is not enough to fund a nationwide network covering over 200 cities that, at inception, only has less than 10 million (data) customers. If we use his logic then software should only cost 50 cents - the cost of burning a CD with the software. 

Its strange to see an article by a business school professor/teacher in the country's most prominent newspaper to not even mention the entire economic picture of running a company. Text messaging is a cash cow, one that helps funds other parts of the business. If you really want to do cost accounting, then let's put the partial cost of towers, spectrum, SMS servers, employee costs, billing systems and lots of other things also on its account. Obviously, the operators are making good money on it, but they may be losing money in other parts of the business. But why should they open it up to scrutiny? Also if casual or non-plan texting (sounds like sex!) is a very low percentage of the revenue and number of total messages sent - then what's so wrong with charging higher for it?

I am not advocating that the senator or FCC or the responsible regulatory body or a journalist  should not query or check this; they should certainly probe it - but don't make it another conspiracy theory or another way we are cheated!

It really makes me believe that even the best guys want to use controversy and half-baked ideas to sell their product. This is similar to the way newspapers and magazines use/report numbers to make them sound more interesting but miss the point.

Disclosure: I have never worked for a mobile operator/carrier. I have worked as an engineer for an equipment manufacturer and understand some aspects of a cellphone networks' working and cost structure.

Friday, October 24, 2008

Better mousetraps, I mean Ethernet switches

Sometimes a better mousetrap is just super useful!

Our technical sales guys do a lot of traveling with demo kits and (obviously) want the lightest, most compact gear possible (ofcourse that doesn't reduce the stares at the airport security line).

One of the things he found is a USB powered 5-port Ethernet switch. Just connect a small cable to the switch and hook the other end to the USB port of a computer, and voila!

I have been using it for a few days and love the little black box. Its 2 in x 3 in x 1/2 in and can fit in my pocket!

Plain old benefits:
- saves an extra power jack on the strip
- no need to go down under the desk to find a power jack (at work)
- quick ability to switch connections between various machines (very essential for testbeds and demo kits)
- small and light enough to carry a few in my backpack or demo kit.

The one I've got is from Bytec BT-555. I haven't seen it at a Fry's or Best Buy, only online.

Tuesday, July 22, 2008

iPhone 2.0 Software - Push

Everybody knows that iPhone 2.0 software supports Microsoft Exchange ActiveSync. But the devil details are as follows (based on my experience):
  • Exchange email & calendaring works beautifully - just like the preview videos Apple showed and like BlackBerry and ActiveSync users have been enjoying for a while. And setup is a breeze using the iPhone Configuration Utility. It does feel a bit strange to email the config file instead of just dowloading it to an attached iPhone. But it'll work well for enterprise users - "one profile to rule them all".
  • Cisco VPN setup with Group authentication is a bit awkward.
  • If you get a lot of emails, like 1 every 5 minutes, because someone put you on a jillion lists then enabling 'Push' will drain your iPhone's battery enough to require daily charging even with minimum use. Plus your phone vibrates every 5 seconds and makes you look like a twitching retard. Use Fetch with settings of 15 min, 30 min or 1 hour - depending on how desperate you are.
  • Someone tells me that there are specific push-related rules, i.e. set a rule to determine which email messages get pushed. But apparently it is only available, for setting, through Outlook. I use a Mac and checked Outlook Web Access using IE on Windows XP under Fusion, but could not find it. Need more research!


  • Below are relevant documents & links on the subject.
  1. Apple's docs on implemented/omitted features: http://support.apple.com/manuals/en_US/Enterprise_Deployment_Guide.pdf
  2. MSFT blog comparing the implementations: http://blogs.msdn.com/jasonlan/archive/2008/07/18/iphone-2-0-windows-mobile-for-push-email.aspx
  3. Exchange ActiveSync FAQ: http://technet.microsoft.com/en-us/exchange/bb288524.aspx

Sunday, July 13, 2008

iPhone 2.0

So it seems that lots of existing iPhone (1.x) owners had serious problems in either downloading the new 2.0 OS or installing it ("got bricked") or activating their phone after installation. My experience was different. It did take iTunes a while before it was ready to update the iPhone OS. Around 5pm it allowed me to download and in 15 minutes the new OS was installed, 5 more minutes to restore settings from backup.

First review:
Very good set of usability improvements. Location-finding (even without A-GPS) seems to work a whole lot better (better than 1.1.3 atleast). But the App.Store is amazing. Find an app, select it for download, enter your iTunes Store password and in minutes it flies! Ofcourse this works best in WiFi covered areas. Have to see how long it takes to download a few megs over EDGE.

The range of app's seems pretty impressive for day one. It's hard to believe what will come in the next few months and years. All the promises and potential from the iPhone SDK preview are going to be true. This is the mobile platform of choice. The best developers are or will be flocking to produce iPhone apps.

Multi-Touch is Key
One thing is clear - the bold and courageous choice Apple made in using a touchscreen and forgoing any keys (except 'home', volume, vibrate & 'sleep') is paying off bigtime. Applications are free to define user interaction in a very very customized way. No crazy remapping or multipurposing (using alt/shift...) of the numeric keypad or other buttons; no need to cramp 3 letters of the tinniest font on/around each key. The slight loss of speed is replaced by the elegance of a well-defined, aesthetic and colored interface. App. developers have better freedom than PC's to create a new way for user interaction. Make no mistake, the new way is and will be more impactful to the consumer adoption than anything else.

iPhone meet IT
The addition of MS Exchange support, Cisco VPN and iPhone Configuration Utility to iPhone is as big as the switch to Intel for Mac's. These new features are basic product features to compete against Blackberry and Windows Mobile in the corporate market. The rest will be in continuous courting of corporate IT. Ofcourse employees bugging IT and the attraction of CXO's to the iPhone will push IT to start supporting the iPhone.

PC vs. Mac all over again?
The iPhone and its OS togather unquestionably form the best mobile platform today. Windows Mobile came out years before iPhone OS (unlike Mac OS vs. Windows), but has yet to mature in terms of user experience. WM has all/most of the needed functionality, but is defiicient in other areas. It took Windows almost 10-15 years to mature into a stable and, relatively speaking, usable form (with 2000 and XP). But the story of licensing OS' is worth considering. Will Apple license iPhone OS? No it won't! Not with the success of the Mac, iPhone and iTunes. They are more confident than ever of their beliefs, innovation and capabilities.

More on the following in later posts.

Real Challenger #1: Nokia/Symbian
Nokia/Symbian clearly see the challenge and their recent changes are interesting to say the least.

Real Challenger #2: Google Android

Wake up time: Microsoft Windows Mobile

No Hope #1: Pure Open Source/Linux-styled mobile OS's

No Hope #2: Blackberry OS/devices

Friday, July 4, 2008

Forgot Master Password on Mac

If you forget the Master Password on your Mac, you are in trouble! But if you have set the Master Password but not turned on FileVault then you are in luck.

Here's how to fix the problem:

Just delete the file /Library/Keychains/FileVaultMaster.keychain
This will reset the master password. Or you could go into terminal and type
"sudo rm /Library/keychains/filevaultmaster.keychain"
and your problem is solved.

Friday, May 30, 2008

Printing on Leopard over a Windows Network

Anybody at a small company with a Mac has faced this nightmare: all the printers are on a domain controlled Windows Server and its incredibly impossible to print on them!

Seems like 'Kerberos Printing from OS X to Windows Active Directory Printer Share' is the solution.

Use CUPS to add a printer and select 

2. Add Printer -> Enter Name / Location / Description
3. Select Device as "Windows Printer via SAMBA with kerberos support" 
4. Enter "ksmb://username:passwd@printserver/PrinterName"
5. Finish it up!

Oh, by the way entering your password like that will place it in direct text form in /etc/cups/printers.conf. Normally printers.conf has user read-write permissions only. So you should be safe from other users on the machine or on the network. But if you let someone use your login for a few minutes (while you are away) - then you are in TROUBLE! They can read your login password in plain text in less than 3 seconds. So be careful!