ZTE AT-commands disable/enable flashdrive AT+ZCDRUN=8 enable AT+ZCDRUN=9 disable stay online AT+ZOPRT=5 check net-/SIMlock AT+ZSEC? answer: , < SEC_STATUE >: 0 Initializing the encryption (Insignificant SEC_ITEMS) 1 Network Lock error. (Insignificant SEC_ITEMS) 2 Network Locked 3 Unlocked or correct MCC/MNC : 0 No action 1 Network lock 2 (U)SIM card lock 3 Network Lock and (U)SIM card Lock Unlock +ZNCK="unlock-code" +ZNCK? Unlock residual time 0-5 Report signal strength +ZRSSI Syntax +ZRSSI parameter command syntax Command Possible response(s) +ZRSSI +ZRSSI:,, OK +CME ERROR: Description This command is used to report signal strength.. Notice the command is used only in platform 6290 and 6246. Defined values 3G network(registered to 3G network) +ZRSSI: rssi,ecio,rscp The unit of Rscp is 0.5dbm ( in 0.5 dBm step with no sign). The unit of Ecio is 0.5db ( in 0.5 dB step with no sign). The relation is: 2*rssi=rscp-ecio e.g. +ZRSSI: 49,8,106 Rssidbm = -rssi = -49dbm Eciodb = -ecio/2= -4db Rscpdbm = - rscp /2= -53dbm 2G network(there is no ecio and rscp value when registered in 2G network ,so set value of 1000) e.g. +ZRSSI: rssi,1000,1000 No network e.g. +ZRSSI :OK Notice! the command is used only in platform 6290 and 6246. Set Operational Mode AT+ZSNT=0,0,0 (Auto) - Default AT+ZSNT=1,0,0 GPRS Only AT+ZSNT=2,0,0 3G Only AT+ZSNT=0,0,1 GPRS Preferred AT+ZSNT=0,0,2 3G Preferred Query Operational Mode AT+ZPAS? +ZPAS:,OK : the type of current network No Service Limited Service GPRS GSM UMTS EDGE HSDPA : service domain CS_ONLY: CS domain service available. PS_ONLY: PS domain service available. CS_PS: CS&PS domain service available. CAMPED: camped in a cell. example Command: AT+ZPAS? Response: +ZPAS: "GPRS","CS_PS" OK Set Band Status +ZBANDI at+zbandi=0 • Automatic (Auto) - Default at+zbandi=1 • UMTS 850 + GSM 900/1800 at+zbandi=2 • UMTS 2100 + GSM 900/1800 (Europe) at+zbandi=3 • UMTS 850/2100 + GSM 900/1800 at+zbandi=4 • UMTS 850/1900 + GSM 850/1900 Notice! the command is used only in platform 6290 and 6246.