Hi team,
I have RM551E-GL ES RM551EGL00AAR02A02M8G, with following scenario:
SIM card CMLINK China Mobile HK, to roamed network 51011 ID XL
From wireshark, we successfully attach, request proper APN, receive PDP IP from CMLINK, but few moments later, disconnected.
Any ideas why? COPS using mode act 7 E-UTRAN
roamingattach.pcap.zip (4.9 KB)
there is no problem with local sim scenario, only roaming scenario.
in roaming scenario, AT+COPS=0, it does not try to register/attach to local PLMN.
the only way for modem to register & attach is AT+COPS=1,2,“51011”,7
hi team,
anything I can do to provide/help for further checking?
pls confirm latest firmware for RM551E-GL R02?
I have sent the latest firmware to your email. Please try again.
hi @herbert.pan-Q thanks.
one question, AT+QNWPREFCFG=“rat_acq_order”
in RM551E, this value changed during sim change. how can I make it permanent to NV?
Dear @morpig
This command is saved automatically, is there any issue on your side?
