Most AT commands return ERROR

[flau]

Hi, I have a custom board built around a nRF9160.  All GPIO (P0.xx) work.  However, when I test with the at_client only AT+CGSN=1, AT+CGMI, AT+CGMM and AT+CGMR return with the expected string.  All other commands return "ERROR".  Any suggestions are very much appreciated.

[flau]

Hi Markus,

Is the LTE Link Monitor only worked with the nRF9160DK?  Can I use it with my custom board?  I only see COM6,7,8 for nRF9160DK under the modem port selection.

By the way, I try the AT+CLAC command on the nRF9160DK and I see the full list of commands available.

AT+CFUN
AT+COPS
AT%COPS
AT+CGDCONT
AT+CGACT
AT+CEMODE
AT+CGATT
AT+CGEQOSRDP
AT+CPINR
AT+CPIN
AT+CPSMS
AT+CEDRXS
AT%XPTW
AT+CEDRXRDP
AT+CEREG
AT%XNEWCID
AT%XGETPDNID
AT+CLAC
AT+CMEE
AT+CGMI
AT+CGMM
AT+CGMR
AT+CGSN
AT+CIMI
AT+CSCON
AT+CMGS
AT+CNMA
AT+CNMI
AT+CMGF
AT+CPMS
AT+CGSMS
AT%XSMMA
AT%CMNG
AT+CNEC
AT+CGEREP
AT%CESQ
AT%XPCO
AT+CESQ
AT%XSIM
AT%XBANDLOCK
AT+CGPIAF
AT+CPAS
AT+COPN
AT+CSQ
AT+CEER
AT+CNUM
AT+CRSM
AT+CIND
AT+CLCK
AT+CPWD
AT%XCBAND
AT+CGPADDR
AT+CGCONTRDP
AT%NBRGRSRP
AT+CSIM
AT%XOPNAME
AT%XTIME
AT%XRAI
AT%XCONNSTAT
AT+CEPPI
AT%XDATAPRFL
AT%XMAGPIO
AT%XANTDETMAGPIO
AT%XMIPIRFFEDEV
AT%XMIPIRFFECTRL
AT%XCOEX0
AT%XANTCFG
AT%XEMPR
AT%XSUDO
AT%XPMNG
AT%XRFTEST
AT%XAPNCLASS
AT%XTEMPHIGHLVL
AT%XTEMP
AT%XPRODDONE
AT%XMODEMTRACE
AT%XEPCO
AT%XVBATLOWLVL
AT%XVBATLVL
AT%XVBAT
AT+CCLK
AT%CCLK
AT%XIPV6FAIL
AT%XUSIMLCK
AT%XOPERID
AT%XSMSFALLBACK
AT%XSYSTEMMODE
AT%XSNRSQ
AT+CGAUTH
AT%XMONITOR
AT%SHORTSWVER
AT%HWVERSION
AT%XMODEMUUID
AT%XICCID
AT+ODISNTF
AT+ODIS
AT%ODIS
AT%XNETTIME
AT%XDEEPSEARCH
AT%XFILEWRITE
AT+CEINFO
AT%XPDNCFG
AT+CSODCP
AT%XDATASTOP
AT%XAPNSTATUS
AT%XPOFWARN
OK

But with my custom board, I only see 22 commands available.  Weird!!