dear sir; i want to use a 8051 for sending data through phone line , i want a idea about how design it and how write a program for it please guide me best regards javad majd
One very important thing Graham omitted: What are the LEGAL and/or regulatory requirements in your territory? http://www.8052.com/forum/read.phtml?id=36214 For embedded modem modules, look here: http://www.multitech.co.uk/PRODUCTS/~Modems/Embedded/