Modem - QMI-network

This service is used to configure and manage the modem QMI network.

Note:

It is strongly recommended to do network configuration via the Network tab.

The QMI can be installed on the "Services" tab within the DINGO-Manager. The configuration can also be installed from a SSH terminal with this command: apt-get -y install libqmi-utils udhcpc

To configure the QMI; select the QMI service and click the "Main config. file..." button. See screenshot.

The QMI setup is used when the DINGO device is configured to use modem in the default interface setup and tries to make a modem connection.

Related services:

Test connection

The modem and QMI-configuration can be tested from an SSH terminal.

Configuration file:

/etc/qmi-network.conf

Make connection:

bash -c 'echo Y > /sys/class/net/wwan0/qmi/raw_ip'

sudo qmi-network /dev/cdc-wdm0 start && udhcpc -b -i wwan0 && route add default dev wwan0

Stop connection:

sudo qmi-network /dev/cdc-wdm0 stop

ifconfig wwan0 down

Other commands:

sudo qmicli -d /dev/cdc-wdm0 --nas-get-signal-info

[/dev/cdc-wdm0] Successfully got signal info

LTE:

RSSI: '-75 dBm'

RSRQ: '-10 dB'

RSRP: '-111 dBm'

SNR: '5.6 dB'

sudo qmicli -d /dev/cdc-wdm0 --nas-get-signal-strength

[/dev/cdc-wdm0] Successfully got signal strength

Current:

Network 'lte': '-75 dBm'

RSSI:

Network 'lte': '-75 dBm'

ECIO:

Network 'lte': '-2.5 dBm'

IO: '-106 dBm'

SINR (8): '9.0 dB'

RSRQ:

Network 'lte': '-10 dB'

SNR:

Network 'lte': '6.2 dB'

RSRP:

Network 'lte': '-111 dBm'

sudo qmicli -d /dev/cdc-wdm0 --nas-get-home-network

[/dev/cdc-wdm0] Successfully got home network:

Home network:

MCC: '242'

MNC: '1'

Description: 'TELENOR'

sudo qmicli -d /dev/cdc-wdm0 --nas-get-serving-system

[/dev/cdc-wdm0] Successfully got serving system:

Registration state: 'registered'

CS: 'attached'

PS: 'attached'

Selected network: '3gpp'

Radio interfaces: '1'

[0]: 'lte'

Roaming status: 'off'

Data service capabilities: '1'

[0]: 'lte'

Current PLMN:

MCC: '242'

MNC: '1'

Description: ''

Roaming indicators: '1'

[0]: 'off' (lte)

3GPP location area code: '65534'

3GPP cell ID: '20429573'

Detailed status:

Status: 'available'

Capability: 'cs-ps'

HDR Status: 'none'

HDR Hybrid: 'no'

Forbidden: 'no'

LTE tracking area code: '30601'

Full operator code info:

MCC: '242'

MNC: '1'

MNC with PCS digit: 'no'

sudo qmicli -d /dev/cdc-wdm0 --dms-uim-verify-pin=PIN,0000

sudo qmi-network /dev/cdc-wdm0 status

Loading profile at /etc/qmi-network.conf...

APN: telenor

APN user: wap

APN password: wap

qmi-proxy: no

Loading previous state from /tmp/qmi-network-state-cdc-wdm0...

Previous CID: 20

Previous PDH: 2266515696

Getting status with 'qmicli -d /dev/cdc-wdm0 --wds-get-packet-service-status --client-cid=20 --client-no-release-cid '...

Status: connected

sudo qmicli -d /dev/cdc-wdm0 --wds-get-packet-service-status

[/dev/cdc-wdm0] Connection status: 'connected'

sudo 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: 'ready'

Application ID:

A0:00:00:00:87:10:02:F9:72:FF:01:89

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'

sudo qmicli -d /dev/cdc-wdm0 --nas-network-scan

sudo qmicli -d /dev/cdc-wdm0 --nas-get-system-selection-preference

[/dev/cdc-wdm0] Successfully got system selection preference

Emergency mode: 'no'

Mode preference: 'gsm, umts, lte'

Band preference: 'gsm-dcs-1800, gsm-900-extended, gsm-900-primary, wcdma-2100, wcdma-900'

LTE band preference: '1, 3, 7, 8, 20, 28'

TD-SCDMA band preference: '(null)'

Roaming preference: 'any'

Network selection preference: 'automatic'

Service domain preference: 'cs-ps'

GSM/WCDMA acquisition order preference: 'wcdma'

Acquisition order preference: lte, umts, gsm, td-scdma, cdma-1x, cdma-1xevdo

sudo qmicli -d /dev/cdc-wdm0 --dms-get-capabilities

[/dev/cdc-wdm0] Device capabilities retrieved:

Max TX channel rate: '50000000'

Max RX channel rate: '100000000'

Data Service: 'non-simultaneous-cs-ps'

SIM: 'supported'

Networks: 'gsm, umts, lte'

Known problems

On some RASPBIAN 9 systems we get this error: error: couldn't start network: QMI protocol error (64): '(null)'

Solution: modify the function: start_network() in /usr/bin/qmi-network

START_NETWORK_ARGS="'apn=$APN,ip-type=4'"

For Buster (RASPBIAN 10):

START_NETWORK_ARGS="apn='$APN',ip-type=4"

If this error is encountered: verbose call end reason (6,50): [3gpp] ipv4-only-allowed, then the solution is to make sure that , ip-type=4, is included in the START_NETWORK_ARGS. See above.