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USA&FRANCE Connection J2ME

Ould Nadif
Ranch Hand

Joined: Jan 21, 2004
Posts: 184
Hi all,

I developped a J2ME application that connect to server HTTP.
I have SX1 Siemens (Serial 60) to test my application J2ME.
What do I need to configure my mobile to work in USA(Floride). I have a french subscription (GSM-GPRS).

Thank you for your help.

OULD NADIF


We are ones that build the world, thus build it well.
Michael Yuan
author
Ranch Hand

Joined: Mar 07, 2002
Posts: 1427
What is your carrier in the US? Is it the same as your carrier in France? I do not think your GPRS subscription would work if a different carrier is providing your voice service when you roam to the USA. But I'd be interested to learn your experience. Thanks.


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Roseanne Zhang
Ranch Hand

Joined: Nov 14, 2000
Posts: 1953
If you have your own server in USA, it should work.

I can connect from China to the US, and vise versa. However, I set up both servers.
Michael Yuan
author
Ranch Hand

Joined: Mar 07, 2002
Posts: 1427
What server? Can you setup your own GPRS access points?
Punit Raizada
Ranch Hand

Joined: Mar 20, 2004
Posts: 156
Hi,

I think all u need to do is change the access point to the current provider and u should be set ...

There should be no problem to connect to any server in the world ...

from personal experience .. i was using my TMOBILE sim card in France and only had to change the access point to the URL of Orange for the GPRS to work .


SCJP 1.4
Everything that can go wrong will go wrong -Murphy
Roseanne Zhang
Ranch Hand

Joined: Nov 14, 2000
Posts: 1953
I can use US TMobile or AT&T sim card to access my server in Shenyang, or Changzhou in China. My coworker can use his ChinaMobile sim card to access my server in Dallas, TX.
Roseanne Zhang
Ranch Hand

Joined: Nov 14, 2000
Posts: 1953
It is just like a web browser and use http protocol. Of course, if the mobile company block it, then we have problems. We had this problem when ChinaMobile blocked us for a while.
Roseanne Zhang
Ranch Hand

Joined: Nov 14, 2000
Posts: 1953
"What server?"

Game server
Michael Yuan
author
Ranch Hand

Joined: Mar 07, 2002
Posts: 1427
Ok, Thanks. But I guess the question is: If you take your T-Mobile phone to China, can you still get GPRS data service there on that phone without changing the SIM card? Do you need to re-config the phone with a new GPRS access point?
Punit Raizada
Ranch Hand

Joined: Mar 20, 2004
Posts: 156
I think TMOBILE has ties with other carriers in the world .. In India .. i was using the same chip but the service i was getting was from Airtel ( carrier in India)... for every call that i recieved .. i was charged roaming ..( a whopping 2.99 per minute)...

I didnt play with GPRS there but i guess all i had to do was change my connection settings to the ones that Air Tel uses ( Access point, Username , password etc.)

I guess .. thats all u have to do .. check the carrier that ur sim is pickin up .. call the customer support of that carrier .. have them send u the connection settings OTA or just enter them manually.
Punit Raizada
Ranch Hand

Joined: Mar 20, 2004
Posts: 156
Hey .. just one question popped up in my mind ...

Accessing the WWW from ur phone shouldnt be a problem whereever u go .. right ??? ... cause u only use GPRS to communicate with the carrier gateway .. and then the gateway in turn routes ur request thro internet ... so all u need is to access ur local gateway ..

Am i right ??? ...
Roseanne Zhang
Ranch Hand

Joined: Nov 14, 2000
Posts: 1953
Originally posted by Michael Yuan:
Ok, Thanks. But I guess the question is: If you take your T-Mobile phone to China, can you still get GPRS data service there on that phone without changing the SIM card? Do you need to re-config the phone with a new GPRS access point?


Of course, answers are NO, then YES. I switched to a Chinese sim card, reconfigure my cellphone, then I can use it to communicate with my server in China and US. You need to go through the gateway to get to the Internet, then you can go anywhere you want, and also are "allowed" to go. Michael, you know what I mean, don't you?

Punit Raizada
You are exactly correct.
[ September 26, 2004: Message edited by: Roseanne Zhang ]
Michael Yuan
author
Ranch Hand

Joined: Mar 07, 2002
Posts: 1427
Hi Roseanne,

Yes I understand the "allowed to go" part.

Anyway, thanks to everyone. I wish we can roam GPRS services internationally some time in the future!
Ould Nadif
Ranch Hand

Joined: Jan 21, 2004
Posts: 184
Originally posted by Michael Yuan:
What is your carrier in the US? Is it the same as your carrier in France? I do not think your GPRS subscription would work if a different carrier is providing your voice service when you roam to the USA. But I'd be interested to learn your experience. Thanks.


Hello Michael,

Sorry not to reply before. Now I can reply because I could test my application J2ME to a Floride. I have response elements: We bring to Floride two mobiles the SX1 of Siemens and the P400 of Samsung.
We could realize a Connection HTTP with my Application J2ME to Server located in France. But we couldn't with my P400. By now i don't know why. I Would say too. In France the both mobile work very well. I used the operator: Orange and SFR of France. But I don't know What operator in USA we connected in USA.
When I will have other responses I email you.

OULD


OULD NADIF
Ould Nadif
Ranch Hand

Joined: Jan 21, 2004
Posts: 184
Originally posted by Roseanne Zhang:
If you have your own server in USA, it should work.

I can connect from China to the US, and vise versa. However, I set up both servers.


What do you want mean if you say : "I set up both servers"

Thanks in advance
Roseanne Zhang
Ranch Hand

Joined: Nov 14, 2000
Posts: 1953
Read all above posts, you would understand what I was talking about.
Michael Yuan
author
Ranch Hand

Joined: Mar 07, 2002
Posts: 1427
Thanks OULD. Maybe you can check whether your two phones have the exact same WAP/GPRS settings (access point etc.)

cheers
Michael
Ould Nadif
Ranch Hand

Joined: Jan 21, 2004
Posts: 184
Originally posted by Roseanne Zhang:
Read all above posts, you would understand what I was talking about.


Thank you for your notice. :roll:

Hi all,

I thank to everyone for your contribution to resolve my probleme.
I would like say THIS: The discussion was very interesting.
I would like JUST do a general notice:
-I didn't need to change my french sim card to a USA sim card. My application J2ME on SX1 worked well without any new configuration. It is not the same for Punit Raizada : He switched to a Chinese sim card, reconfigure his cellphone. I thank him for this information.

Michael: I checked the P400 configuration. It seems that the same like SX1's configuration. At the end of october I will return in USA with 10 mobile. I Will know more.

OULD NADIF
 
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