what is the abbreviation of +CMTI , The response which we get from GSM modem when a new message is received(for ex: AT+CMTI:"SM",1)?
This has absolutely nothing whatsoever to do with Keil!
It's not an an abbreviation - it's just a standard part of the GSM AT command/response set.
See the modem's AT Commands Manual for details.
Also the standard GSM specs:
07.05: Use of Data Terminal Equipment - Data Circuit Terminating Equipment (DTE-DCE) Interface for Short Message Services (SMS) and Cell Broadcast Services (CBS);
07.07: AT Command set for GSM Mobile Equipment (ME);
www.3gpp.org/Specification-Numbering
Hi Neil, Thanks for your reply.....
The standard which formalises AT Commands, and defines the rules for creating new cammands/responses (and command/response sets) is ITU-T V.250:
www.itu.int/.../en