P T, W @ $ ?; which correspond to the Dial command of the Hayes AT command set.
2.
Later a third-party company called Teletrends produced a 1200 modem board that used the industry-standard Hayes AT command set.
3.
This profile provides a standard to access the Internet and other AT command set specified in European Telecommunications Standards Institute ( ETSI ) 07.07, and Point-to-Point Protocol ( PPP ).
4.
Commands that start with " AT + C " are well-documented in the 3GPP standard TS 07.07 " AT Command set for GSM Mobile Equipment ( ME ) ", which is also an ETSI standard and can be retrieved via their publications page.
मोबाइल