EM9291 Unable to Connect to n79

IoT Modules MC/EM Series
21

not quite sure why you can still register n78 when setting n79 only in AT!BAND…

22

Sorry I forgot to mention that I changed the setting to allow all 5G NR bands before testing the connection at n78.

23

i don’t see problem to connect n79 in NSA mode



ati3
Manufacturer: Sierra Wireless, Incorporated
Model: EM9291
Revision: SWIX65C_02.17.08.00 944ad5 jenkins 2024/08/01 20:22:05
IMEI: 358186652112345
IMEI SV:  5
FSN: 83403270212345
+GCAP: +CGSM


OK
at!impref?
!IMPREF:
 preferred fw version:    02.17.08.00
 preferred carrier name:  GENERIC
 preferred config name:   GENERIC_030.081_000
 preferred subpri index:  000
 current fw version:      02.17.08.00
 current carrier name:    GENERIC
 current config name:     GENERIC_030.081_000
 current subpri index:    000

OK

at!gstatus?
!GSTATUS:
Current Time:  124              Temperature: 33

Reset Counter: 1                Mode:        ONLINE
System mode:   ENDC             PS state:    Attached
LTE band:      B7               LTE bw:      20 MHz
LTE Rx chan:   2850             LTE Tx chan: 20850
EMM state:     Registered       Normal Service
RRC state:     RRC Connected
IMS reg state: NOT REGISTERED   IMS mode:    Normal
IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP

PCC Rx0 RSSI:  -63.0            PCC Rx0 RSRP:  -94.4
PCC Rx1 RSSI:  -89.7            PCC Rx1 RSRP:  -125.0
PCC Rx2 RSSI:  ---              PCC Rx2 RSRP:  ---
PCC Rx3 RSSI:  ---              PCC Rx3 RSRP:  ---
PCC Tx Power:  19.0             TAC:         9f62 (40802)
RSRQ (dB):     -10.9            Cell ID:     0192D751 (26400593)
SINR (dB):      5.2
SCC1 NR5G band:       n79       SCC1 NR5G bw:         80 MHz
SCC1 NR5G Tx Power:   19.5      SCC1 NR5G Tx chan:    722666
SCC1 NR5G Rx chan:    722666
NR5G RSRP (dBm): -93            NR5G RSRQ (dB):  -11
NR5G SINR (dB):  20.0


OK
at!sdpref?
RATs : WCDMA,LTE,NR5G
GWC  : B1,B2,B4,B5,B6,B8,B19
LTE  : B1,B2,B3,B4,B5,B7,B8,B12,B13,B14,B17,B18,B19,B20,B25,B26,B28,B29,B30,B32,B34,B38,B39,B40,B41,B42,B43,B46,B48,B66,B71
TDS  :
NRSA : n1,n2,n3,n5,n7,n8,n12,n13,n14,n18,n20,n25,n26,n28,n29,n30,n38,n40,n41,n48,n66,n70,n71,n75,n76,n77,n78,n79
NRNSA: n1,n2,n3,n5,n7,n8,n12,n13,n14,n18,n20,n25,n26,n28,n29,n30,n38,n40,n41,n48,n66,n70,n71,n75,n76,n77,n78,n79

OK
24

Hmmm, it definitely seems to be a gNB thing. Thank you for the help and advice! I will reconcile my gNB configuration and see if that solves the problem, when I find a solution I will update here to confirm my suspicions.