TAILIEUCHUNG - AT COMMAND TRAINING

The mobile equipment returns the list of parameters and value ranges set with the corresponding Write command or by internal processes | AT Command Training Steven Li March, 2007 Agenda AT Command Overview Voice Call / CSD AT Command GSM AT Command SMS AT Command GPRS AT Command AT Command Special for SIMCOM Agenda TCP/IP AT Command Type of Extended AT Command Test Command AT+=? The mobile equipment returns the list of parameters and value ranges set with the corresponding Write command or by internal processes Read Command AT+? This command returns the currently set value of the parameter or parameters. Type of Extended AT Command Set Command AT+= This command sets the user-definable parameter values. Type of Extended AT Command Execution Command AT+ The execution command reads non-variable parameters affected by internal processes in the GSM engine. Type of Extended AT Command AT+CSQ AT+CREG AT+COPS AT+CPIN AT+CLCK AT+CPWD Commands according to Commands according to AT+CSQ Signal Quality Report Test command AT+CSQ=? Response +CSQ: (list of supported s),(list of supported s) Execute command AT+CSQ Response +CSQ: , +CME ERROR: Execution command returns received signal strength indication and channel bit error rate from the ME. Test command returns values supported by the TA. Parameters : 0 ‑113 dBm or less 1 ‑111 dBm ‑109. ‑53 dBm 31 ‑51 dBm or greater 99 not known or not detectable (in percent): as RXQUAL values in the table in GSM [20] subclass 99 not known or not detectable Reference GSM [13] Note Commands according to AT+CREG Network Registration Commands according to AT+CREG Network Registration Example Commands according to AT+COPS Operator Selection Commands according to AT+COPS Operator Selection Write Command AT+COPS=,, Example Commands according to AT+CLCK Facility Lock to lock phone to sim card, to lock sim card (PIN), etc AT+CLCK=, ,

• Kỹ thuật lập trình
• thủ thuật máy tính
• công nghệ thông tin
• tin học
• quản trị mạng
• computer network
• vấn đề máy tính
• các câu hỏi về máy tính
• giải đáp sự cố máy tính
• 678 câu hỏi trả lời về máy tính