Hello, I am having an issue where I can only connect over HTTP in the first minute or so after running AT+CFUN=1. After this the requests time's out with ERROR. Toggling the modem via AT+CFUN=0 AT+CFUN=1 will again create a short time window when the HTTP connection is successful.
I am currently using the nRF9160 DK with modem firmware 1.3.5 and the Serial LTE Modem application.
Attached is the set of AT commands which reproduce the issue and modem trace while reproducing the issue.
Any ideas as to what might be causing this?
-Cheers
trace-2023-07-13T04-52-31.799Z.mtrace.zip
Ready > AT+CFUN=1 OK > AT+CFUN=1 OK > AT%XCONNSTAT=1 OK > AT%XCONNSTAT? %XCONNSTAT: 0,0,0,0,0,0 OK > AT+CMEE=1 OK > AT%XSIM=1 OK > AT+CEREG=5 OK > AT%MDMEV=1 OK > AT%CESQ=1 OK > AT+CGSN=1 +CGSN: "351358815345076" OK > AT+CGMM nRF9160-SICA OK > AT+CEMODE? +CEMODE: 2 OK %CESQ: 34,1,13,1 > AT+CMEE? +CMEE: 1 OK > AT+CNEC? +CNEC: 0 OK > AT+CGEREP? +CGEREP: 0,0 OK > AT+CIND=1,1,1 OK > AT+COPS=3,2 OK > AT+CGDCONT? +CGDCONT: 0,"IP","simbase","10.218.135.156",0,0 OK > AT+CGACT? +CGACT: 0,1 OK > AT+CESQ +CESQ: 99,99,255,255,15,35 OK > AT%XSIM? %XSIM: 1 OK > AT+CPIN? +CPIN: READY OK > AT+CIMI 234104099298714 OK > AT+CNEC=24 OK > AT+CEER +CEER: "ESM 50" OK > AT+CGEREP=1 OK > AT%XPOFWARN=1,30 OK > AT%XVBATLVL=1 OK > AT+CGMI Nordic Semiconductor ASA OK > AT+CGMR mfw_nrf9160_1.3.5 OK > AT+CGSN 351358815345076 OK > AT%XMODEMUUID %XMODEMUUID: dc8e7aff-5331-409e-be02-5529dffa5537 OK > AT%XDATAPRFL? %XDATAPRFL: 2 OK > AT+CEREG? +CEREG: 5,5,"3026","08308F0B",7,,,"11100000","11100000" OK > AT+CFUN? +CFUN: 1 OK %CESQ: 36,1,18,2 > AT%CESQ=1 OK > AT+CSCON=1 OK > AT+CSCON? +CSCON: 1,1 OK > AT+CPAS +CPAS: 0 OK > AT+CEDRXRDP +CEDRXRDP: 4,"1011","","" OK > AT%XTIME=1 OK > AT%CONEVAL %CONEVAL: 0,0,7,35,19,29,"08308F0B","50501",161,9410,28,0,0,8,1,1,118 OK +CSCON: 0 > AT%XCBAND=? %XCBAND: (1,2,3,4,5,8,12,13,18,19,20,25,26,28,66) OK > AT%XCBAND %XCBAND: 28 OK > AT%HWVERSION %HWVERSION: nRF9160 SICA B1A OK > AT%XMODEMTRACE=1,2 OK > AT%XSYSTEMMODE? %XSYSTEMMODE: 1,1,0,1 OK > AT%XICCID %XICCID: 89103000000031673631 OK > AT%XEMPR? %XEMPR: OK > AT+CGDCONT? +CGDCONT: 0,"IP","simbase","10.218.135.156",0,0 OK > AT+COPS? +COPS: 0,2,"50501",7 OK %CESQ: 31,1,14,2 > AT%XMONITOR %XMONITOR: 5,"","","50501","3026",7,28,"08308F0B",161,9410,31,28,"","11100000","11100000","01001011" OK > AT+CPINR="SIM PIN" +CPINR: "SIM PIN",3 OK > AT+CPINR="SIM PIN2" +CPINR: "SIM PIN2",3 OK > AT+CPINR="SIM PUK" +CPINR: "SIM PUK",10 OK > AT+CPINR="SIM PUK2" +CPINR: "SIM PUK2",10 OK > AT%XSIM? %XSIM: 1 OK %CESQ: 31,1,9,1 %CESQ: 31,1,14,2 %CESQ: 31,1,9,1 > AT#XHTTPCCON=1,"www.bosl.com.au",80 #XHTTPCCON: 1 OK +CSCON: 1 %CESQ: 34,1,14,2 %CESQ: 36,1,19,2 > AT#XHTTPCCON=0,"www.bosl.com.au",80 #XHTTPCCON: 0 OK %CESQ: 37,1,13,1 %CESQ: 37,1,19,2 > AT#XHTTPCCON=1,"www.bosl.com.au",80 #XHTTPCCON: 1 OK > AT#XHTTPCCON=0,"www.bosl.com.au",80 #XHTTPCCON: 0 OK +CSCON: 0 %CESQ: 32,1,8,1 %CESQ: 32,1,14,2 %CESQ: 32,1,9,1 %CESQ: 33,1,14,2 %CESQ: 31,1,9,1 %CESQ: 31,1,14,2 > AT#XHTTPCCON=1,"www.bosl.com.au",80 #XHTTPCCON: 0 ERROR +CSCON: 1 %CESQ: 36,1,18,2 %CESQ: 37,1,13,1 %CESQ: 37,1,18,2 %CESQ: 38,1,13,1 %CESQ: 37,1,18,2 +CSCON: 0 %CESQ: 30,1,8,1 %CESQ: 30,1,13,1 > AT+CFUN=0 OK +CGEV: ME PDN DEACT 0 +CSCON: 1 +CEREG: 0 +CIND: "service",0 +CIND: "roam",0 +CGEV: ME DETACH %CESQ: 35,1,16,2 %CESQ: 255,0,255,0 +CSCON: 0 %XSIM: 0 > AT+CFUN=1 OK > AT#XHTTPCCON=1,"www.bosl.com.au",80 #XHTTPCCON: 1 OK > AT#XHTTPCCON=0 #XHTTPCCON: 0 OK
