working of a cellphone
Hi all
I'd like to get some information abt how exactly a cellphone works - basically what happens when a call is made and when we reject the call, how does the message of rejection travel across?Are there any good links which could explain this information? Also, can we control this procedure thru j2me? If using j2me , i want to control the keys of my cellphone to send a different msg using a different key whenever i reject a call , is this possible?
[469 byte] By [
pretsba] at [2007-10-3 4:04:20]
Thnx. I checked the material available on d net . There's nothing that explains the technology behind it. Actually, I have to develop an application in which I need any key rejection mode i.e. I can reject a call using any key and instead of a normal "Number Busy" msg, i get a std msg for each key, say if i press 1 , the caller gets a msg - "Can't take ur call now, I'm driving" and so on. I'm not sure what technology I have to use for doing something like this.
ok, I have researched the GSM protocols but you can not modify the standard protocols you know, so you have to add some new features above the protocol statck, I give my suggestions if you are developping this feature in the application layer, first you can receive a incoming call message at the application layer, and then you can detect the key precess, for example, you press the number key 1, and then you can just reject the call, and next you can just send a special SMS to the incoming number.
Thnx all. I got the point - this application will be in the app layer, of course. But could you explain a bit more about the technology I can use to develop this - I have worked in j2me but couldn't find anything that could get me started. The application will have to get automatically activated by an incoming call and then I need to have an any key rejection mode which instantaneously sends a msg. Can anyone guide me on this?
Also, can anyone post a link on the actual working of a cellphone, where i can get some information on how this whole process - call acceptance and rejection - works.
