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i need copy of AT commands for siemensc35
e-mail:eng_emy1512@yahoo.com
"But remember that it isn't just professionals who ask questions on this board, as should be obvious from some of the posts. Most students and home-designers often specifically want to use a normal phone and not a module for their projects."
Quite so - which is why the post I cited also says, "Having said that, there are plenty of examples on the web of using Nokia phones"
"The main problem with using a normal phone, is that there is no easy way to turn them on/off"
Yes, that's true - but I wouldn't say it's the main problem.
I think that the main problem with using a phone is that the interface is likely to be undocumented and unsupported - they are sold, supported and documnted for consumer use as telephones.
So, if you do want to use a phone, you must be prepared to put in the effort to "reverse engineer" it. The phone may be "free", but this is the "hidden" cost!
A GSM modem or module, on the other hand, is specifically designed for this type of application - with appropriate interfaces, documentation and support.
Used GSM modems are fequently available quite cheaply on ebay.