# Why "QMI protocol error (14)" **URL:** \ **Category:** IoT Modules\ **Created:** [March 25, 2022, 1:15pm UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664 "2022-03-25T13:15:41Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [March 25, 2022, 1:15pm UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/1 "2022-03-25T13:15:41Z")
Hello, Our product includes : Modem: RC7620-1 Version: SWI9X07H\_00.08.07.00 0ce4c1 jenkins 2021/03/17 02:18:20 Everything works fine, but I don’t understand why, for varying lengths of time, the modem can’t connect and gives the following message: _error: couldn’t start network: QMI protocol error (14): ‘CallFailed’_ _call end reason (1): generic-unspecified_ _verbose call end reason (2,209): [internal] pdn-ipv4-call-throttled_ _error: network start failed, no packet data handle_ I don’t understand what the problem is ? Thank you for your help See you soon JFT ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [March 27, 2022, 4:37am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/2 "2022-03-27T04:37:28Z")
what is the return of AT!ENTERCND=“A710” AT!IMPREF? AT!GSTATUS? AT+CEREG? AT+CGDCONT? AT+CFUN? ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [March 28, 2022, 12:27pm UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/3 "2022-03-28T12:27:25Z")
Hello jyijyi, thank you for your reply **Here are the answers to the Hayes questions asked :** _AT!ENTERCND=“A710”_ OK _AT!IMPREF?_ !IMPREF: preferred fw version: 00.08.07.00 preferred carrier name: SIERRA preferred config name: SIERRA\_000.057\_000 preferred subpri index: 001 current fw version: 00.08.07.00 current carrier name: SIERRA current config name: SIERRA\_000.057\_000 current subpri index: 001 OK _AT!GSTATUS?_ !GSTATUS: Current Time: 140 Temperature: 36 Modem Mitigate Level: 0 ModemProc Mitigate Level: 0 Reset Counter: 1 Mode: ONLINE System mode: WCDMA PS state: Attached IMS reg state: NOT REGISTERED IMS mode: Normal IMS Srv State: NO SMS,NO VoIP WCDMA band: WCDMA 900 WCDMA channel: 3075 GMM (PS) state:REGISTERED NORMAL SERVICE MM (CS) state: IDLE NORMAL SERVICE WCDMA L1 state:L1M\_PCH\_SLEEP LAC: C296 (49814) RRC state: DISCONNECTED UTRAN Cell ID: 01526FF7 (22179831) RxM RSSI C0: — RxD RSSI C0: — RxM RSSI C1: — RxD RSSI C1: — OK _AT+CEREG?_ +CEREG: 0,5 OK _AT+CGDCONT?_ +CGDCONT: 1,“IP”,“m2mroaming17”,“0.0.0.0”,0,0,0,0 +CGDCONT: 2,“IPV4V6”,“ims”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0 +CGDCONT: 3,“IPV4V6”,“sos”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,1 OK _AT+CFUN?_ +CFUN: 1 OK **Here is the log of the connection attempt** I have hidden the identifiers REDY: Loading profile at /var/etc/qmi/qmi-network.conf… REDY: APN: m2mroaming17 REDY: APN user: ------------ REDY: APN password: ------------- REDY: APN auth: CHAP REDY: qmi-proxy: no REDY: Checking data format with ‘qmicli -d /dev/cdc-wdm0 --wda-get-data-format ‘… REDY: Device link layer protocol retrieved: raw-ip REDY: Getting expected data format with ‘qmicli -d /dev/cdc-wdm0 --get-expected-data-format’… REDY: Expected link layer protocol retrieved: 802-3 REDY: Updating kernel link layer protocol with ‘qmicli -d /dev/cdc-wdm0 --set-expected-data-format=raw-ip’… REDY: Kernel link layer protocol updated REDY: Starting network with ‘qmicli -d /dev/cdc-wdm0 --wds-start-network=apn=‘m2mroaming17’,username=’-----------’,password=’-------------’,auth=‘CHAP’ --client-no-release-cid '… REDY: error: couldn’t start network: QMI protocol error (14): ‘CallFailed’ REDY: call end reason (1): generic-unspecified REDY: verbose call end reason (2,209): [internal] pdn-ipv4-call-throttled REDY: Saving state at /var/etc/qmi/qmi-network-state-cdc-wdm0… (CID: 3) REDY: error: network start failed, no packet data handle REDY: Clearing state at /var/etc/qmi/qmi-network-state-cdc-wdm0… Thank you for your help See you soon JFT ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [March 28, 2022, 1:06pm UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/4 "2022-03-28T13:06:41Z")
Can you try with another sim card without authentication requirement? BTW, did you also try AT+CGAUTH? You can also try AT!SCACT to see if it can establish data connection: > [@Example on establishing data connection by AT!SCACT via MBPL R20 driver](https://forum.sierrawireless.com/t/example-on-establishing-data-connection-by-at-scact-via-mbpl-r20-driver/24130): > > Here is an example to establish data connection by AT!SCACT via MBPL R20 driver: Module: WP7609 FW: R13 MBPL: R20 PC Environment: Ubuntu 18 need to install the MBPL R20 driver for qmi\_wwan and qcserial (MBPL\_Drivers\_USB\_R20\_ENG1-src.tar.gz) avoid the Ubuntu changing the network name: ln -s /dev/null /etc/systemd/network/99-default.link sudo apt-get install libqmi-utils sudo apt-get install udhcpc now insert the USB to PC sudo chmod 777 /sys/class/net/wwan0/qmi/raw\_ip … ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [March 29, 2022, 8:44am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/5 "2022-03-29T08:44:58Z")
Hello jyijyi, thank you for your reply _Can you try with another sim card without authentication requirement?_ No, no SIM without authentication because the modems are embedded in secure management systems. BTW, did you also try AT+CGAUTH? here is the answer: +CGAUTH: 1,2,“351925689550” +CGAUTH: 2,0 +CGAUTH: 3,0 OK In the documentation it is written that the password should be present but this is not the case. _You can also try AT!SCACT to see if it can establish data connection_ This is not possible. This makes me rewrite the whole procedure for managing the modem. I am not in a PC. When I look at the response to the AT!GSTATUS?, the mode is LTE when the connection is correct… _System mode: LTE PS state: Attached_ _IMS reg state: NOT REGISTERED IMS mode: Normal_ _IMS Srv State: NO SMS,NO VoIP_ _LTE band: B7 LTE bw: 15 MHz_ _LTE Rx chan: 2825 LTE Tx chan: 20825_ _LTE CA state: INACTIVE_ _EMM state: Registered Normal Service_ _RRC state: RRC Idle_ _PCC RxM RSSI: -59 RSRP (dBm): -87_ _PCC RxD RSSI: -92 RSRP (dBm): -134_ _Tx Power: – TAC: C28B (49803)_ _RSRQ (dB): -9 Cell ID: 00114400 (1131520)_ _SINR (dB): 16.8_ …and the mode is WCDMA when the connection is not working. _System mode: WCDMA PS state: Attached_ _IMS reg state: NOT REGISTERED IMS mode: Normal_ _IMS Srv State: NO SMS,NO VoIP_ _WCDMA band: WCDMA 900_ _WCDMA channel: 3075_ _GMM (PS) state:REGISTERED NORMAL SERVICE_ _MM (CS) state: IDLE NORMAL SERVICE_ _WCDMA L1 state:L1M\_PCH\_SLEEP LAC: C296 (49814)_ _RRC state: DISCONNECTED UTRAN Cell ID: 01526FF7 (22179831)_ _RxM RSSI C0: — RxD RSSI C0: —_ _RxM RSSI C1: — RxD RSSI C1: —_ Could you explain the difference? Thank you for your help See you soon JFT ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [March 29, 2022, 8:53am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/6 "2022-03-29T08:53:01Z")
how about fixing the technology to be LTE by AT+KSRAT? ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [March 29, 2022, 9:13am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/7 "2022-03-29T09:13:23Z")
Currently the command is AT+KSRAT=0 I’ll do the test. But the sim cards are 3G-4G and multi-operator. In the AT+KSRAT documentation it says: 1 GSM only =\> 2G 2 UMTS only =\> 3G 5 LTE only =\> 4G What is the WCDMA mode? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [March 29, 2022, 9:29am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/8 "2022-03-29T09:29:49Z")
i think WCDMA is the 3G ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [April 3, 2022, 3:03pm UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/9 "2022-04-03T15:03:43Z")
Hello jyijyi, I did the test in the different modes of the AT+KSRAT= query and the result is always the same. **Do you have any additional information about these error messages ?** REDY: error: couldn’t start network: QMI protocol error (14): ‘CallFailed’ REDY: call end reason (1): generic-unspecified REDY: verbose call end reason (2,209): [internal] pdn-ipv4-call-throttled Thank you for your help See you soon JFT ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [April 4, 2022, 4:12am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/10 "2022-04-04T04:12:50Z")
Why did you test OK previously when technology was LTE? ---
**Author:** ![sophiaab98](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/sophiaab98/32/6741_2.png) [@sophiaab98](https://forum.sierrawireless.com/u/sophiaab98)\ **Post date:** [April 4, 2022, 8:50am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/12 "2022-04-04T08:50:19Z")
means that registration is denied. It seems that the device isn’t able to properly communicate with the SIM [192.168.o.1](https://192168l254.com.mx/192.168.o.1) card provider. Usually, the troubleshooting steps for this issue are these: Try a different SIM card, preferably a SIM card from a different carrier than you already have. ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [April 4, 2022, 10:27am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/13 "2022-04-04T10:27:12Z")
Hello jyijyi and sophiaab98, I understand that the modem is denied, but the problem is not permanent and this is true for all technologies. When the connection is established everything is ok. When the connection is denied I get the following message and I would like to know more about the refusal. REDY: error: couldn’t start network: QMI protocol error (14): ‘CallFailed’ REDY: call end reason (1): generic-unspecified REDY: verbose call end reason (2,209): [internal] pdn-ipv4-call-throttled With another SIM from another provider no similar problem. JFT ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [April 4, 2022, 10:31am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/15 "2022-04-04T10:31:40Z")
Can the module get IP address successfully in AT+CGPADDR=1 ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [April 5, 2022, 1:24pm UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/16 "2022-04-05T13:24:05Z")
Hello jyijyi, I do not use this command. I use “qmicli -d /dev/cdc-wdm0 --wds-get-current-settings” to get the IP address. JFT ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [April 5, 2022, 3:10pm UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/17 "2022-04-05T15:10:22Z")
you can use AT command to check also ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [April 20, 2022, 7:08am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/18 "2022-04-20T07:08:23Z")
Hello jyijyi, All this does not correct my initial problem: What does the following message correspond to? _error: couldn’t start network: QMI protocol error (14): ‘CallFailed’_ _call end reason (1): generic-unspecified_ _verbose call end reason (2,209): [internal] pdn-ipv4-call-throttled_ _error: network start failed, no packet data handle_ I have big problems because this error happens intermittently and users are very unhappy Thank you for your help See you soon JFT ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [April 20, 2022, 7:44am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/19 "2022-04-20T07:44:02Z")
As this is happening randomly, if you need to know the root cause, you need to contact distributor and capture the qualcomm log. Probably you can also try the next official release R9 later to see if it solves the problem… ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [April 20, 2022, 7:58am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/20 "2022-04-20T07:58:09Z")
This is not the answer I expected. ☹ Where can I download the official release R9 later version ? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [April 20, 2022, 8:01am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/21 "2022-04-20T08:01:56Z")
you can search in [https://source.sierrawireless.com/](https://source.sierrawireless.com/) But the R9 is not yet ready, probably in May or June ---
**Author:** ![JFTWIT](https://avatars.discourse-cdn.com/v4/letter/j/d2c977/32.png) [@JFTWIT](https://forum.sierrawireless.com/u/JFTWIT)\ **Post date:** [April 20, 2022, 8:08am UTC](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664/22 "2022-04-20T08:08:01Z")
It is therefore better to wait. another question: what is the difference between 1. R8 (Generic - GCF): RC7620, RC7620-1 2. R8 (Sierra Wireless): RC7620, RC7620-1 [Next page](https://forum.sierrawireless.com/t/why-qmi-protocol-error-14/26664.md?page=2)