Force IMS registration with the Verizon SIM

IoT Modules MC/EM Series
1

How do I force the IMS registration on EM7455 with the Verizon SIM card?

It is not happening automatically. Please see the info mentioned below

Defined PDP Context:

+CGDCONT: 1,“IPV4V6”,“ims”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0
+CGDCONT: 2,“IPV4V6”,“vzwadmin”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0
+CGDCONT: 3,“IPV4V6”,“vzwinternet”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0
+CGDCONT: 4,“IPV4V6”,“vzwapp”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0
+CGDCONT: 5,“IPV4V6”,“vzw800”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0
+CGDCONT: 6,“IPV4V6”,“vzwclass6”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0

Active PDP Context:

+CGCONTRDP: 3,5,vzwinternet,100.100.30.129,38.0.16.18.177.98.130.110.0.0.0.73.248.121.222.1,0.255.101.0 254.128.0.0.0.0.0.0.0.0.0.73.248.121.222.64,198.224.171.135 32.1.72.136.0.101.255.0.6.46.0.13.0.0.0.0,198.224.169.135 32.1.72.136.0.100.255.0.6.32.0.13.0.0.0.0

Operational Status:

Current Time: 885 Temperature: 33
Reset Counter: 1 Mode: ONLINE
System mode: LTE PS state: Attached
LTE band: B4 LTE bw: 20 MHz
LTE Rx chan: 2100 LTE Tx chan: 20100
LTE CA state: NOT ASSIGNED
EMM state: Registered Normal Service
RRC state: RRC Idle
IMS reg state: No Srv IMS mode: Normal

PCC RxM RSSI: -73 RSRP (dBm): -101
PCC RxD RSSI: -74 RSRP (dBm): -101
Tx Power: 0 TAC: 2F02 (12034)
RSRQ (dB): -6.9 Cell ID: 054C8E20 (88903200)
SINR (dB): 15.0

Uptime: 0 days, 0 hours, 14 minutes, 45 seconds

SIM lock status: Disabled

Network Operator: Verizon

Network Auth Mode: None

Roaming Setting: Enabled

2

Hi @akn ,

I am paying attention on the configuration of your module. You are using a verizon SIM card but the module’s setting is showing roaming enabled. The roaming state might limit some services like IMS.
Thanks

3

IMS registration failure is also seen with “Roaming Disabled”