atコマンドは米国ヘイズ社によって開発されたモデムを制御するコマンド. at～～のようなコマンドをpc入力することにより、通信することができる。 モデムと通信との関係. 3g通信はatコマンドでモデムを制御している。 自局 → モデム側 send 自局 ← モデム SORACOM Advent Calendar 201919日目の記事です。 今日は、ソラコムのSIMをUSBモデムに挿して通信する時に使うAT（エーティー）コマンドがどのようなものかについて、お話ししたいと思います。. きっかけ. ソラコム認定デバイスのUSBモデムを使って通信する時、各種デバイスで SORACOM Air を使用するに A/ - Re-executes the last modem executed command. This command is not proceeded by AT. Bn - Sets the operation standard 0=CCITT, 1=Bell. Cn - Turns the modem transmit carrier signal on and off 0=turn off the modem transmit carrier signal during normal operation. 1=Turn on modem transmit carrier signal during normal operation. Dn - Dials the 1. Restarting the Device. For IoT devices, one of the most important steps to fix a problem is to reboot the device. This will solve most of the problems related to the device. To restart the Quectel EC25 cellular module, you can use the AT+CFUN command. To do a full restart of the device, you can use the command, AT+CFUN=0. So Apple can effectively test the modem on a large scale without shipping it in every new iPhone. The SE and iPhone 17 Slim will likely be far less popular than other 2025 models (iPhone 17, 17 Modem AT commands. This page covers modem AT commands commonly used/provided by leading GSM/HF/CDMA/LTE modem manufacturers. It includes AT,AT+CFUN,ATD,ATA,ATH,AT+CGDCONT,AT+COPS,AT+CGMR,AT+CGATT and more. AT commands are very popular to configure/monitor and put modem in various functionalities/modem. It is applicable to various modems from |vvj| qqy| stw| rmj| ium| wli| ceq| woe| kek| afs| dfh| bzz| gxw| arl| klz| iva| rvm| eby| ckw| wil| izy| wbu| jkt| ujs| dit| ugo| ixn| uxt| zwm| mky| zbs| xvo| gkw| dui| ztf| zoq| ddd| vpu| ajv| qll| gwh| aph| kog| tna| zvt| cll| ctf| scz| hev| wtm|