参考：
http://www.raviyp.com/embedded/190-sim900-sim800-ussd-code-at-commands-working-example
*170# がモバイルマネーの開始番号
OK AT+CMGF=1 OK AT+CMGR=1 +CMGR: "REC READ","MTN","","16/03/11,08:42:48+00" Y'ello, You have successfully registered your MTN number. Keep your MTN line active and enjoy real value on voice. Dial *585# to receive Internet Settings. OK AT+CMGL="REC UNREAD" OK AT+CUSD=1 OK AT+CUSD=1,"*156#" OK +CUSD: 0,"Your number is: 233241943721",64 AT+CUSD=1,"*170#" OK +CUSD: 1,"Main Menu 1) Transfer Money 2) Pay Bill 3) Buy Airtime 4) My Wallet",64 AT+CUSD=1,"1" OK +CUSD: 1,"Transfer Money 1) Mobile User 2) Non Mobile User 3) Favorite Select a number and press send",64 AT+CUSD=1,"1" OK +CUSD: 1,"Mobile User 1) Subscriber 2) Merchant Select a number and press send",64 AT+CUSD=1,"1" OK +CUSD: 1,"Enter mobile number",64 AT+CUSD=1,"0245511543" OK +CUSD: 1,"Repeat mobile number",64 AT+CUSD=1,"0245511543" OK +CUSD: 1,"Enter amount",64 AT+CUSD=1,"5" OK +CUSD: 1,"Enter Reference",64 AT+CUSD=1,"1" OK +CUSD: 1,"Send GHS 5 to Douglas Armooh (0245511543) with Reference: 1. Enter MM PIN for confirmation",64 AT+CUSD=1,"2248" OK +CUSD: 0,"Not enough funds to perform transaction",64
