Lenovo ThinkSystem SE350 - Page 174

Section Check item and detail
APN Setting
Collect information from the SIM card user manual.
Generally, it includes information as below, but some
might have more.
NAME, APN, PIN code, USERNAME, PASSWORD and
Authentication method (CHAP or PAP).
For example:
• Name: SB
• APN: plus.4g
• Username: plus
• Password: 4g
• Authentication method: CHAP or PAP
SE350 contains the most common APN settings by
default. By enabling LTE into XCC_GUI or CLI WWAN,
SE350 can connect to telecom services.
The default PDP type is “IPV4”, this is also the most
common setting. For some carriers that change the
PDP type to IPV4V6 or IPV6, check the PDP type
requirement with the carrier; then, change to IPV4V6 or
IPV6 using the command below:
sudo uci set network.lte_wan.pdptype='IPV4V6'
sudo uci commit network
sudo /etc/init.d/network restart
sudo at_command.sh 'at+reset'
Log files For more details, see
“Log file” on page 166
Register network with selected APN
For some special cases, it is possible to be unregistered from the telecom operator. Register again with your
selected “APN” to the network using the command below:
AT+COPS=2
AT+CGDCONT=1,"IPV4V6","<APN>"
AT+COPS=0
Log file
Log files are collected by CLI commands below for SIM working status and Network Registration Status.
sudo at_command.sh 'at+cpin?' /** Is SIM well-installed? Is PIN-CODE setting correct? **/
sudo at_command.sh 'AT+CIMI' /** read IMSI **/
sudo uci show network |grep lte /** check APN, username, password, auth, PDP type **/
Check Network Registration status:
'AT+CSQ' /**search max RF signal quality between ‘device” and all “carriers “ around the device **/
'AT+COPS?' /** return wwan’s registered carrier and 4G tech if it’s successful to register to carrier **/
166 ThinkSystem SE350 and ThinkSystem SE350 Enclosures Maintenance Manual