i want to connect mp AT89s8252 to mobile phone i know using the TX & RS thank u
"Risky at best to assume that all mobile phones have identical command sets." Actually, the GSM specs define the AT command set for GSM terminals: GSM spec 07.07: AT command set for GSM Mobile Equipment (ME) http://www.3gpp.org/ftp/Specs/archive/07_series/07.07/ Of course, manufacturers will still instist on adding their own proprietary extensions...