1) Check the Signal using the below command
admin@MBTC-0013-JPN21470265-cli> show interfaces wwan status carrier-brief |tab
INTERFACE CURRENT OPERATOR OPERATOR RX TX
NAME STATE REGISTRATION STATE ICCID NUMBER TECH SIGNAL RSSI RSRQ RSRP SNR ID NAME APN ADDRESS PREFIX GATEWAY DNS UPTIME BYTES BYTES
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
vni-0/100 searching not-registered-searching 89634221527313407996 639763518841 lte 100 5152 0 N/A N/A
vni-0/101
vni-0/102
vni-0/103
What to do if STATE is in "searching"?
Step-1:
Check the signal in each of the antennas using the below command.
***Please run the below command for 4-5 iterations with a few seconds interval***
admin@MBTC-0013-JPN21470265-cli> show interfaces wwan status lte-info
interfaces wwan status lte-info vni-0/100
band B1
bandwidth "15 Mhz"
ant0-rssi -93
ant0-rsrp "-138 dBm"
ant1-rssi -57
ant1-rsrp "-91 dBm"
rx-channel 425
tx-channel 18425
serving-cell-id 07000632
serving-physical-cell-id 26
serving-snr 0
serving-rsrq -16.1
serving-rsrp -91.9
serving-rssi -57.1
carrier-aggregation "NOT ASSIGNED"
interfaces wwan status lte-info vni-0/101
interfaces wwan status lte-info vni-0/102
interfaces wwan status lte-info vni-0/103
1) If the value is <-86, it means the antenna may not be Connected, or improperly installed Antenna.
2) If the customer says the antenna is properly connected, do the below steps:
i ) Check if the Antennas are connected to LTE and not to WiFi.
ii) The Signal may be really bad in the location. Consider moving the device around to find better signal reception.
CSG 7XX dual LTE:
=================
SIM slot 1 (Left) : Outer 2 antenna connectors marked as LTE, Port facing: far left Aux, Far right Main
SIM slot 2 (Right): Inner two antenna connectors marked as LTE/WiFi: port facing left Main, right Aux.
CSG 350 Dual LTE:
=================
LTE 1 -> Top sim slot ->Port facing: Front Left Aux, Back left Main.
LTE 2 -> Bottom sim slot ->Port Facing: Front Right Main, Back Right Aux.
CSG 355/365 Dual LTE:
=================
SIM slot 1 (Left): Outer 2 antenna connectors marked as LTE, Port facing: far left Aux, Far Right Main
SIM slot 2 (Right): Inner two antenna connectors made as LTE/WiFi: Port facing left Main, Right Aux.
*Please note that SIM slot 2 will be functional only for 2LA/2LB devices. To find what is the model IP, either check the Stick on the Bottom of the CSG which would specify the model or use the CLI "admin@versa-flexvnf-cli> show system details" to identify the model.
Step-2:
If Step-1, doesn't resolve the problem, find the correct APN. We do have a predefined APN database, that has a general APN.
But if some customer has a Non-Standard or Private APN, then we need to explicitly specify the APN name in the config.
GUI:
CLI:
admin@Server-3-HA1-cli(config)% set interfaces vni-0/100 wwan apn
Possible completions:
<String (max 31 characters)>
Side note: Below scenario is specific to case where verizon sim was being used and the customer is looking to connect to a different provider
Check /var/log/versa/versa-usbmodem.log and if you see the below logs, it's very like that it's still holding on to Verizon as the carrier, so it needs to be cleared and set to "Generic"
The procedure to set the carrier as GENERIC is as below
admin@versa-flexvnf: ~] $ sudo su
[root@versa-flexvnf: admin]# echo -n -e "at"'!'"impref=\"GENERIC\"\r\n" > /dev/ttyUSB2; sleep 1; timeout 1 cat /dev/ttyUSB2
at!impref="GENERIC"
OK
[root@versa-flexvnf: admin]# echo -n -e "at"'!'"impref?\r\n" > /dev/ttyUSB2; sleep 1; timeout 1 cat /dev/ttyUSB2
at!impref?
!IMPREF:
preferred fw version: 02.32.11.00
preferred carrier name: GENERIC
preferred config name: GENERIC_002.064_000
preferred subpri index: 000
current fw version: 02.33.03.00
current carrier name: VERIZON
current config name: VERIZON_002.079_001
current subpri index: 000
fw version mismatch
carrier name mismatch
config name mismatch
OK
[root@versa-flexvnf: admin]# echo -n -e "at+cfun=1,1\r\n" > /dev/ttyUSB2; sleep 1; timeout 1 cat /dev/ttyUSB2
at+cfun=1,1
OK
[root@versa-flexvnf: admin]# exit
exit
Once done you can check if the SIM is able to register with the new carrier, if not you can try a power-cycle and check if the registration is successful