I used a 3G(WCDMA) mobile data modern, which dail up in embedded linux, sometimes I find the USIM card is out of balance, so it can't dialup normal, I just search the modern manual to find the AT command can be help.
I use command called "SYSINFO", but it doesn't work.
whether or not it have a method to judge the USIM status which is out of ballanace.
You will need to dial a USSD command. This is different for each operator.
For example, on Vodafone UK it's *#1345# - on other networks it can be *100#
Depending on your modem, you will need to send
AT+CUSD=1,"*100#",15
or
AT+CUSD=1,"*100#"
Related
I'm looking for something that allow me to get devices (pc, Mac, phone and tablet) unique id like a MAC address can be.
I need to track all logins into a protected area but i'm unable to find an unique id with whom I can identify the used device.
I need that because I want the user to register their devices and then let them login only with that. Thanks
You can’t really. It would be a huge security/privacy risk to do that. However, there some things that you could do to get close:
Add a cookie to that device with a UUID
Fingerprinting - Use all available browser settings available to JS such as browser agent, installed fonts etc. to build up a unique-ish profile of a device (Note. Apple try to prevent this in the latest version of Safari)
IP address. It’s not perfect but is can do something and there are ways to remove a small degree of obfuscation. This is an example in PHP: How to get Real IP from Visitor?
Combining all of these things together should be able to give you something close to what you want. It may not completely protect it, but it will offer some form of it.
JavaScript is a high level programming language which can not help you storing such information. Same applies to PHP as well.
However, you might want to consider making use of cookies to achieve your goal. You can use a cryptographic algorithm and store it in a cookie, and you have a unique identifier.
I am not a professional developer but I want to develop one project that includes sending message through mobile connected through USB port only... And if possible I want to keep it generalized, like no need for handset model and service provider name.
I don't think it's possible to do this. Certainly at the very least it would depend on the model of mobile in use.
However as an alternative approach there are companies that provide a (paid for, but not expensive) SMS service accessible via a web API. This may suit what you are trying to achieve.
I don't think you will find this easy. Messages can be sent in 2 different modes 'text' or PDU. Support for both modes is not universal across all phones. PDU is the most widely available type on modern phones, but is also the most complex. Not all mobile phones expose a modem to the computer eg. Windows mobile 6.*. Many phones use proprietory software that does not support all commands. Different phones will connect to different COM ports so this will need checking every time, and could prove tricky if there is more than one phone/modem connected. However using just one phone and sending messages in text format after configuring the settings manually the first time is very easy.
See an example here http://www.codeproject.com/Articles/34360/vb-net-AT-commands-to-send-SMS
We are planning for vehicle tracking system. We would like to relay on GPS Tracking System and view position report via Google Maps.
For hardware requirement we are thinking of GPS modem that can transmit data to our system.
Which GPD Modem is suitable for my project?
Use a smartphone. Haha.
On a more serious note, since it's for vehicular application only, there are a lot of companies that manufacture GPS modules (u-blox is one of them). Just google and you'll find thousands of companies manufacturing them. But before you choose a GPS module, make sure you check the regulations of your target country. If the module works on the Iridium satellite network, countries like India & China won't allow it as Iridium frequency is close to their military frequencies. In Europe you'll be better off with the Inmarsat network. So, do your homework & you should be good.
Also, if you're developing your own map interface, you might wanna ask the manufacturer if they have any existing mapping interface you can hook into or disable. You mag be charged for either.
All the best!
Are mobile networks (like GSM/GPRS/UMTS) available where you are?
if so check-out the tracking products from this site or this site (Google keywords: GPS GPRS)
If not, you should consider a custom solution, maybe someone like this company can help...
I have worked on a project that involved sending data over GSM/CDMA network. It used a simple GSM/CDMA modem connected to an embedded linux device and was a stationary piece of hardware. Attach a GPS device and it may very well be a tracking system. The problem is when the network drops or the device moves out of the network coverage area. I am not sure if there any GSM/CDMA modem available with GPS added to them as we didn't have this facility in our hardware and it was very much desirable. We needed to use a separate GPS device, mostly iPhone, separately to determine the lat long of our device.
You can use any GSM/GPRS modem equipped with GPS device. The modem will forward the GPS data to your central server through GPRS and at the server side you just need to process rcvd data and display it on google maps.
How to get the phone number of the device in Symbian?
According to the GSM specs, only the IMSI is required to be available on the SIM card.
The actual phone number MSISDN is stored on the HLR database in the operator's network and does not need to be available on the SIM card or transmitted to the phone.
So no matter what technology you are using (Symbina, Java ...) you can never count on being able to consistently get your own phone number from the device or SIM. You might be lucky if the operator stores it on the SIM or if the phone provides the user with a possibility to enter it manually, but it does not have to be this way.
As Pat has said, although there are APIs for accessing the "own number" slot on the SIM, rarely in my experience is this slot filled.
The usual strategy for obtaining the phone number for a connected application is to send an SMS as part of a verification process. Either:
Programatically send an SMS from the handset to your server (lots of good SMS gateway interconnect providers out there). The SMS will arrive at your server 'from' the number of the handset (or the SIM to be more correct). Of course the SMS should contain some token so the server can link it with a given session/user.
This has the advantage that you don't need the user to enter their own phone number (which is fraut with subtle difficulties given few folks understand how to format numbers in E.164 format). One disadvantage is that the process can cost your user money (one SMS).
Have the user enter their phone number (web site or on the handset) and connect to your server, passing that phone number. Have the handset then wait for an SMS to arrive that you send from your server. If this SMS does indeed arrive, you have verified the phone number they entered as correct and valid. Obvious disadvantage is that this relies on the user to enter their number correctly - again, given the plethora of ways of writing phone numbers around the world, its not as trivial as it sounds to normalise numbers to E.164....
Alas, neither of these methods are bullet-proof, particularly because SMS is an unconnected transport. Depending on GSM network load, the load of your gateway provider, phase of the moon and direction of window blowing an SMS can take a second to a month to arrive (yes, I do have experience of the latter). The mean delivery time is often in the seconds, but you do have to play with the operation timeout and might have to tweak it on a geographical and GSM network basis.
[And no, don't rely on delivery reports - even more unreliable than SMS delivery]
FYI: Actually i have found this.
http://www3.symbian.com/faq.nsf/AllByDate/100335073FFD8FEF80256E3200571A49?OpenDocument
But the fact is, the phone number is not always stored in SIM. The operator chooses to do it or not!
You can't. Afaik.
Check this discussion:
http://discussion.forum.nokia.com/forum/showthread.php?t=65117
It is not generally possible to get the MSISDN from a Symbian device (or BREW, or any other platform). We've tried.
I tried GNUBOX which use bluetooth to connect to my computer then to the internet. It's very painful to set up (under windows more than under linux, but it's still painful, it works 1 time on 3).
I own a Nokia 6630 so there is no WLAN support. Is there any emulator? I'd need to know something like max width, max height etc... usability in general, any hint?
This may sound silly but you could consider getting a mobile tariff with unlimited data. In most European countries these are now available and are not too expensive.
I don't believe you would get a solid experience from any emulator.
Don't know if you're only limiting to the 6630 or not...if not, Opera Mini has a free simulator.
If you find yourself needing to do more testing on multiple devices, there's always Device Anywhere...but it definitely does not meet your requirement for free.
Can you use a data cable and IP pass through?
Since the 6630 is a Symbian phone, you should be able to use GNUbox to handle the connection. See http://xan.dnsalias.org/gnubox/
Keynote's MITE just launched a free version for content testing; it includes the 6630 along with more than 1600 other profiles and 11,000 user agent strings. You can access via LAN get the protocol details.