Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Collapse
Brand Logo

ModalAI Forum

  1. ModalAI Support Forum
  2. VOXL Accessories
  3. Cellular Modems
  4. 5G Modem Cannot Connect to Private 5G Network

5G Modem Cannot Connect to Private 5G Network

Scheduled Pinned Locked Moved Cellular Modems
2 Posts 2 Posters 1.1k Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • S Offline
    S Offline
    spiff
    wrote on last edited by
    #1

    Hello,

    We have a sentinel drone with the EM9291 Sierra Wireless modem and are attempting to connect to a private 5G network. The modem seems to recognize the SIM, but has failed to reach out and attempt connecting to the network.

    voxl-modem.conf:

    voxl2:/$ cat /etc/modalai/voxl-modem.conf 
    {
    	"modem_type":	"em9291",
    	"apn":	"internet",
    	"world":	"false",
    	"microhard_ip": "192.168.168.100",
    	"dtc_ip": "192.168.0.100",
    	"doodle_ip": "10.223.0.100",
    	"modallink":	"false",
    	"placeholder": "hello world"
    }
    

    This is the output to voxl-modem-start:

    voxl2:/$ voxl-modem-start 
    
    qrb5165 based hardware detected...
    wwan0 is up!
    Sierra detected!
    
    Starting qmi network...
    error: couldn't start network: QMI protocol error (14): 'CallFailed'
    call end reason (3): generic-no-service
    verbose call end reason (3,2001): [cm] no-service
    [/dev/cdc-wdm0] Client ID not released:
    	Service: 'wds'
    	    CID: '44'
    Error detected! Retrying...
    error: couldn't start network: QMI protocol error (14): 'CallFailed'
    call end reason (3): generic-no-service
    verbose call end reason (3,2001): [cm] no-service
    [/dev/cdc-wdm0] Client ID not released:
    	Service: 'wds'
    	    CID: '45'
    

    I've noticed the SIM is listed as 'illegal' from the output of qmicli -d /dev/cdc-wdm0 --uim-get-card-status:

    voxl2:/$ qmicli -d /dev/cdc-wdm0 --uim-get-card-status
    [/dev/cdc-wdm0] Successfully got card status
    Provisioning applications:
    	Primary GW:   slot '1', application '1'
    	Primary 1X:   session doesn't exist
    	Secondary GW: session doesn't exist
    	Secondary 1X: session doesn't exist
    Slot [1]:
    	Card state: 'present'
    	UPIN state: 'not-initialized'
    		UPIN retries: '0'
    		UPUK retries: '0'
    	Application [1]:
    		Application type:  'usim (2)'
    		Application state: 'illegal'
    		Application ID:
    			A0:00:00:00:87:10:02:FF:FF:FF:FF:89:07:09:00:00
    		Personalization state: 'ready'
    		UPIN replaces PIN1: 'no'
    		PIN1 state: 'disabled'
    			PIN1 retries: '3'
    			PUK1 retries: '10'
    		PIN2 state: 'enabled-not-verified'
    			PIN2 retries: '3'
    			PUK2 retries: '10'
    	Application [2]:
    		Application type:  'isim (5)'
    		Application state: 'detected'
    		Application ID:
    			A0:00:00:00:87:10:04:FF:FF:FF:FF:89:07:09:00:00
    		Personalization state: 'unknown'
    		UPIN replaces PIN1: 'no'
    		PIN1 state: 'disabled'
    			PIN1 retries: '3'
    			PUK1 retries: '10'
    		PIN2 state: 'not-initialized'
    			PIN2 retries: '0'
    			PUK2 retries: '0'
    Slot [2]:
    	Card state: 'absent'
    	UPIN state: 'not-initialized'
    		UPIN retries: '0'
    		UPUK retries: '0'
    

    The system mode seems to be rotating through WCDMA, LTE, and NR5G based on the output from AT commands and qmicli -d /dev/cdc-wdm0 --nas-get-system-selection-preference:

    voxl2:/$ qmicli -d /dev/cdc-wdm0 --nas-get-system-selection-preference
    [/dev/cdc-wdm0] Successfully got system selection preference
    	Emergency mode: 'no'
    	Mode preference: 'cdma-1x, cdma-1xevdo, gsm, umts, lte, td-scdma'
    	Band preference: 'wcdma-2100, wcdma-pcs-1900, wcdma-1700-us, wcdma-850-us, wcdma-800, wcdma-900, wcdma-850-japan'
    	LTE band preference: '1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 42, 43'
    	LTE band preference (extended): '1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 43, 46, 48, 66, 71'
    	TD-SCDMA band preference: 'a, b, c, d, e, f'
    	Roaming preference: 'any'
    	Network selection preference: 'manual'
    	Service domain preference: 'cs-ps'
    	GSM/WCDMA acquisition order preference: 'automatic'
    	Acquisition order preference: (null), lte, umts
    
    voxl2:/$ busybox microcom /dev/ttyUSB0
    AT!ENTERCND="A710"
    OK
    AT!GSTATUS?
    !GSTATUS: 
    Current Time:  412688		Temperature: 40
    Thermal Mitigation Level: 0
    
    Reset Counter: 1		Mode:        ONLINE         
    System mode:   LTE        	PS state:    Not attached 
    LTE band:      No band		LTE bw:      1.4 MHz 
    LTE Rx chan:   ---		LTE Tx chan: ---
    EMM state:     ---            	---            
    RRC state:     DISCONNECTED    
    IMS reg state: NOT REGISTERED  	IMS mode:    Normal       
    IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP
    
    PCC Rx0 RSSI:  --- 		PCC Rx0 RSRP:  --- 
    PCC Rx1 RSSI:  --- 		PCC Rx1 RSRP:  --- 
    PCC Rx2 RSSI:  --- 		PCC Rx2 RSRP:  --- 
    PCC Rx3 RSSI:  --- 		PCC Rx3 RSRP:  --- 
    PCC Tx Power:  ---		TAC:         ---
    RSRQ (dB):     ---		Cell ID:     ---
    SINR (dB):     0
    
    NR5G band:       ---		NR5G bw:         ---		
    NR5G Tx Power:   ---		NR5G Tx chan:    ---		
    NR5G Rx chan:    ---		NR5G RSRP (dBm): ---		
    NR5G RSRQ (dB):  ---		NR5G SINR (dB):  ---		
    
    
    OK
    AT!GSTATUS?
    !GSTATUS: 
    Current Time:  412694		Temperature: 40
    Thermal Mitigation Level: 0
    
    Reset Counter: 1		Mode:        ONLINE         
    System mode:   NR5G       	PS state:    Not attached 
    MM5G state:    Deregistered     Limited Service
    RRC state:     RRC Idle        
    IMS reg state: NOT REGISTERED  	IMS mode:    Normal       
    IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP
    
    NR5G TAC:        000001        		NR5G Cell ID:    D15 (3349)
    NR5G band:       n78       		NR5G Carrier ID: 0
    NR5G dl bw:      100 MHz   		NR5G ul bw:      100 MHz   
    NR5G Tx Power:   ---        		NR5G Tx chan:    0
    NR5G Rx chan:    622260
    NR5G dl MIMO:    4         		NR5G ul MIMO:    1
    NR5G(sub6) Rx0 RSSI (dBm):   -51.8	NR5G(sub6) Rx1 RSSI (dBm):   -51.3
    NR5G(sub6) Rx2 RSSI (dBm):   ---  	NR5G(sub6) Rx3 RSSI (dBm):   ---	
    
    NR5G RSRP (dBm): -79			NR5G RSRQ (dB):  -11
    NR5G SINR (dB):  22.0
    
    
    OK
    AT+C5GREG?
    +C5GREG: 0,0
    
    OK
    AT!NRINFO?
    !NRINFO: 
    Connectivity Mode: SA
    
    NR5G Cell ID:    D15 (3349)
    NR5G band:       n78       		NR5G Carrier ID: 0
    NR5G dl bw:      100 MHz   		NR5G ul bw:      100 MHz   
    NR5G Tx Power:   ---        		NR5G Tx chan:    0
    NR5G Rx chan:    622260
    NR5G dl MIMO:    4         		NR5G ul MIMO:    1
    NR5G(sub6) Rx0 RSSI (dBm):   -51.8	NR5G(sub6) Rx1 RSSI (dBm):   -51.3
    NR5G(sub6) Rx2 RSSI (dBm):   ---  	NR5G(sub6) Rx3 RSSI (dBm):   ---	
    
    NR5G RSRP (dBm): -114			NR5G RSRQ (dB):  -25
    NR5G SINR (dB):  23.0
    
    
    OK
    
    at!selrat?
    !SELRAT: 00, Automatic
    
    
    OK
    at!band?
    Index, Name
    00, All bands,
    0 - GW:    100200000EC00000
    1 - LTE:   0000A7E2BB0F38DF 0000000000000042
    3 - NRNSA: 000081A03B0A38D7 0000000000007C62
    4 - NRSA:  000081A03B0A38D7 0000000000007C62
    
    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
    
    tomT 1 Reply Last reply
    0
    • S spiff

      Hello,

      We have a sentinel drone with the EM9291 Sierra Wireless modem and are attempting to connect to a private 5G network. The modem seems to recognize the SIM, but has failed to reach out and attempt connecting to the network.

      voxl-modem.conf:

      voxl2:/$ cat /etc/modalai/voxl-modem.conf 
      {
      	"modem_type":	"em9291",
      	"apn":	"internet",
      	"world":	"false",
      	"microhard_ip": "192.168.168.100",
      	"dtc_ip": "192.168.0.100",
      	"doodle_ip": "10.223.0.100",
      	"modallink":	"false",
      	"placeholder": "hello world"
      }
      

      This is the output to voxl-modem-start:

      voxl2:/$ voxl-modem-start 
      
      qrb5165 based hardware detected...
      wwan0 is up!
      Sierra detected!
      
      Starting qmi network...
      error: couldn't start network: QMI protocol error (14): 'CallFailed'
      call end reason (3): generic-no-service
      verbose call end reason (3,2001): [cm] no-service
      [/dev/cdc-wdm0] Client ID not released:
      	Service: 'wds'
      	    CID: '44'
      Error detected! Retrying...
      error: couldn't start network: QMI protocol error (14): 'CallFailed'
      call end reason (3): generic-no-service
      verbose call end reason (3,2001): [cm] no-service
      [/dev/cdc-wdm0] Client ID not released:
      	Service: 'wds'
      	    CID: '45'
      

      I've noticed the SIM is listed as 'illegal' from the output of qmicli -d /dev/cdc-wdm0 --uim-get-card-status:

      voxl2:/$ qmicli -d /dev/cdc-wdm0 --uim-get-card-status
      [/dev/cdc-wdm0] Successfully got card status
      Provisioning applications:
      	Primary GW:   slot '1', application '1'
      	Primary 1X:   session doesn't exist
      	Secondary GW: session doesn't exist
      	Secondary 1X: session doesn't exist
      Slot [1]:
      	Card state: 'present'
      	UPIN state: 'not-initialized'
      		UPIN retries: '0'
      		UPUK retries: '0'
      	Application [1]:
      		Application type:  'usim (2)'
      		Application state: 'illegal'
      		Application ID:
      			A0:00:00:00:87:10:02:FF:FF:FF:FF:89:07:09:00:00
      		Personalization state: 'ready'
      		UPIN replaces PIN1: 'no'
      		PIN1 state: 'disabled'
      			PIN1 retries: '3'
      			PUK1 retries: '10'
      		PIN2 state: 'enabled-not-verified'
      			PIN2 retries: '3'
      			PUK2 retries: '10'
      	Application [2]:
      		Application type:  'isim (5)'
      		Application state: 'detected'
      		Application ID:
      			A0:00:00:00:87:10:04:FF:FF:FF:FF:89:07:09:00:00
      		Personalization state: 'unknown'
      		UPIN replaces PIN1: 'no'
      		PIN1 state: 'disabled'
      			PIN1 retries: '3'
      			PUK1 retries: '10'
      		PIN2 state: 'not-initialized'
      			PIN2 retries: '0'
      			PUK2 retries: '0'
      Slot [2]:
      	Card state: 'absent'
      	UPIN state: 'not-initialized'
      		UPIN retries: '0'
      		UPUK retries: '0'
      

      The system mode seems to be rotating through WCDMA, LTE, and NR5G based on the output from AT commands and qmicli -d /dev/cdc-wdm0 --nas-get-system-selection-preference:

      voxl2:/$ qmicli -d /dev/cdc-wdm0 --nas-get-system-selection-preference
      [/dev/cdc-wdm0] Successfully got system selection preference
      	Emergency mode: 'no'
      	Mode preference: 'cdma-1x, cdma-1xevdo, gsm, umts, lte, td-scdma'
      	Band preference: 'wcdma-2100, wcdma-pcs-1900, wcdma-1700-us, wcdma-850-us, wcdma-800, wcdma-900, wcdma-850-japan'
      	LTE band preference: '1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 34, 38, 39, 40, 41, 42, 43'
      	LTE band preference (extended): '1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 43, 46, 48, 66, 71'
      	TD-SCDMA band preference: 'a, b, c, d, e, f'
      	Roaming preference: 'any'
      	Network selection preference: 'manual'
      	Service domain preference: 'cs-ps'
      	GSM/WCDMA acquisition order preference: 'automatic'
      	Acquisition order preference: (null), lte, umts
      
      voxl2:/$ busybox microcom /dev/ttyUSB0
      AT!ENTERCND="A710"
      OK
      AT!GSTATUS?
      !GSTATUS: 
      Current Time:  412688		Temperature: 40
      Thermal Mitigation Level: 0
      
      Reset Counter: 1		Mode:        ONLINE         
      System mode:   LTE        	PS state:    Not attached 
      LTE band:      No band		LTE bw:      1.4 MHz 
      LTE Rx chan:   ---		LTE Tx chan: ---
      EMM state:     ---            	---            
      RRC state:     DISCONNECTED    
      IMS reg state: NOT REGISTERED  	IMS mode:    Normal       
      IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP
      
      PCC Rx0 RSSI:  --- 		PCC Rx0 RSRP:  --- 
      PCC Rx1 RSSI:  --- 		PCC Rx1 RSRP:  --- 
      PCC Rx2 RSSI:  --- 		PCC Rx2 RSRP:  --- 
      PCC Rx3 RSSI:  --- 		PCC Rx3 RSRP:  --- 
      PCC Tx Power:  ---		TAC:         ---
      RSRQ (dB):     ---		Cell ID:     ---
      SINR (dB):     0
      
      NR5G band:       ---		NR5G bw:         ---		
      NR5G Tx Power:   ---		NR5G Tx chan:    ---		
      NR5G Rx chan:    ---		NR5G RSRP (dBm): ---		
      NR5G RSRQ (dB):  ---		NR5G SINR (dB):  ---		
      
      
      OK
      AT!GSTATUS?
      !GSTATUS: 
      Current Time:  412694		Temperature: 40
      Thermal Mitigation Level: 0
      
      Reset Counter: 1		Mode:        ONLINE         
      System mode:   NR5G       	PS state:    Not attached 
      MM5G state:    Deregistered     Limited Service
      RRC state:     RRC Idle        
      IMS reg state: NOT REGISTERED  	IMS mode:    Normal       
      IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP
      
      NR5G TAC:        000001        		NR5G Cell ID:    D15 (3349)
      NR5G band:       n78       		NR5G Carrier ID: 0
      NR5G dl bw:      100 MHz   		NR5G ul bw:      100 MHz   
      NR5G Tx Power:   ---        		NR5G Tx chan:    0
      NR5G Rx chan:    622260
      NR5G dl MIMO:    4         		NR5G ul MIMO:    1
      NR5G(sub6) Rx0 RSSI (dBm):   -51.8	NR5G(sub6) Rx1 RSSI (dBm):   -51.3
      NR5G(sub6) Rx2 RSSI (dBm):   ---  	NR5G(sub6) Rx3 RSSI (dBm):   ---	
      
      NR5G RSRP (dBm): -79			NR5G RSRQ (dB):  -11
      NR5G SINR (dB):  22.0
      
      
      OK
      AT+C5GREG?
      +C5GREG: 0,0
      
      OK
      AT!NRINFO?
      !NRINFO: 
      Connectivity Mode: SA
      
      NR5G Cell ID:    D15 (3349)
      NR5G band:       n78       		NR5G Carrier ID: 0
      NR5G dl bw:      100 MHz   		NR5G ul bw:      100 MHz   
      NR5G Tx Power:   ---        		NR5G Tx chan:    0
      NR5G Rx chan:    622260
      NR5G dl MIMO:    4         		NR5G ul MIMO:    1
      NR5G(sub6) Rx0 RSSI (dBm):   -51.8	NR5G(sub6) Rx1 RSSI (dBm):   -51.3
      NR5G(sub6) Rx2 RSSI (dBm):   ---  	NR5G(sub6) Rx3 RSSI (dBm):   ---	
      
      NR5G RSRP (dBm): -114			NR5G RSRQ (dB):  -25
      NR5G SINR (dB):  23.0
      
      
      OK
      
      at!selrat?
      !SELRAT: 00, Automatic
      
      
      OK
      at!band?
      Index, Name
      00, All bands,
      0 - GW:    100200000EC00000
      1 - LTE:   0000A7E2BB0F38DF 0000000000000042
      3 - NRNSA: 000081A03B0A38D7 0000000000007C62
      4 - NRSA:  000081A03B0A38D7 0000000000007C62
      
      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
      
      tomT Offline
      tomT Offline
      tom
      admin
      wrote on last edited by
      #2

      @spiff You'll likely need to reach out to Sierra Wireless directly for debug help.

      1 Reply Last reply
      0

      Hello! It looks like you're interested in this conversation, but you don't have an account yet.

      Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.

      With your input, this post could be even better 💗

      Register Login
      Reply
      • Reply as topic
      Log in to reply
      • Oldest to Newest
      • Newest to Oldest
      • Most Votes


      ModalAI
      Categories Recent Tags ModalAI.com Docs
      © 2026 ModalAI® · Accelerating autonomy for smaller, smarter, safer drones · Powered by NodeBB
      • Login

      • Don't have an account? Register

      • Login or register to search.
      • First post
        Last post
      0
      • Categories
      • Recent
      • Tags
      • Popular
      • Users
      • Groups