The LTE module serial EC25-X and EC25-XX match many frequency bands in the world, but the module provider has not completed the compatibility test with all operators, so there is still no independent MBN for each operator. For example, “EC25-AU” frequency match Australia and Latin America, but there is no MBN for Claro in Argentina.

As operator network has been improved, VoLTE network was launched, but clients may be still face with “no VoLTE call” issues. When the SIM card tries to call, it will downgrade to 3G or 2G, because there is no independent MBN can be used when VoLTE is chosen for use.

This instruction guide is intended to show how to force the SIM card to use VoLTE. The UC2000-VG VoIP GSM Gateway is using LTE module “EC25-AU” and has an IP address of 192.168.34.50. Claro SIM card is inserted in port/module 2 of the UC2000-VG device.

Note: The EC25-AU module refers to version EC25AUFAR06A03M4G or above.

1. Telnet of UC2000-VF

Run the application “Putty” and connect it to UC2000-VG through IP 192.168.34.50 (make reference to the following setting). Default telnet port is 23:

Note:

1. If the connection fails, please click Tolls>>>>>Management page to check whether the Telnet option is enabled at the UC2000-VG side.

2. Reboot the device to make the configuration to take effect.

2. Open monitor window ‘ADA’

Log into telnet and input command “en”, then “^ada”. Press ‘Enter’ to enter into the ADA mode as follows:

Input the cmd 53 19 2 2 1 command to open the AT monitor of module 2:

Note:

The command format is: cmd 53 19 X Y Z

X Y means the module number range from X to Y. If only one port is enabled, X is the same with Y.

Z means ON or OFF; value 0 means ON; value 1 means OFF.

For example:

cmd 53 19 0 0 1 means enabled the module 0 cmd 53 19 0 0 0 means disabled the module 0 cmd 53 19 2 4 1 means enabled the ports from 2 to 4.

3. Open configure window ‘Config'

Repeat the configuration described in section 2.1. And then log into telnet and input command “en” then “^config”. Press ‘Enter’ to enter into the Config mode as follows:

4. Confirm whether the SIM card supports VoLTE or not

In window Config, input command: mobile cmd at 2 AT+CIREP=1 to enable the VoLTE information print of current module 2.

Note:

The command format is: mobile cmd at X AT+CIREP=1

X means module number.

In window Config, input command mobile cmd at 2 AT+QVOLTEDBG to check the detail information of module 2.

Note:

The command format is: mobile cmd at X AT+QVOLTEDBG

X means channel number.

In ADA window, you will see the following print.

CIREP: 1 means the SIM card supports VoLTE, while 0 means it does not support VoLTE.

MBN configuration

1. Deactivate Module’s MBN

In window Config, input command: mobile cmd at 2 at+qmbncfg="deactivate” to deactivate the MBN of the current module 2.

Tips:

The command format is: mobile cmd at X at+qmbncfg="deactivate”

X means module number.

2. Reboot Module

In window Config, input command: mobile cmd at 2 AT+CFUN =1,1 to reboot the current module 2, for the purpose of activating section 1.

Tips:

The command format is: mobile cmd at X AT+CFUN=1,1

X means module number.

In window ADA, you will see the following print which means module 0 has been rebooted successfully.

3. Fix the MBN

After the module 2 is booted up, input command: mobile cmd at 2 at+qmbncfg="select","ROW_Generic_3GPP” in window Config to set the module 2 to be fixed with the MBN of ROW_Generic_3GPP. And then you can input the command twice to confirm the fixing work.

The target is to force the Claro card to use the MBN of common: ROW_Generic_3GPP

Tips:

The command format is: mobile cmd at x at+qmbncfg="select","ROW_Generic_3GPP"

X means module number.

In window ADA, you will see the following print:

4. Reboot Module

In window Config, input command mobile cmd at 2 AT+CFUN =1,1 to reboot the current module 2, for the purpose of activating the MBN setting.

Tips:

The command format is: mobile cmd at X AT+CFUN=1,1

X means module number.

In window ADA, you will see the following print which means the module 2 has been rebooting successfully.

5. Check the MBN status of module

After the module 2 is booted up, please check the MBN status.

In window Config, input command mobile cmd at 2 at+qmbncfg="list". You can input the command for several times to get exact status.

Tips:

The command format is: mobile cmd at x at+qmbncfg="list"

X means channel number.

In ADA window, you will see the following print, "List",7,1,1," ROW_Generic_3GPP" means MBN ROW_Generic_3GPP has been selected and activated successfully.

Tips:

1. The print format is: List “List”,X,Y,Z,”xxxxxxxxxxxx”

X is the List index;

Y is the MBN in-use status; 1 means enable; 0 means disable.

Z is the MBN active status; 1 means active; 0 means deactivated.

xxxxxxxxx is the MBN name

2. If the MBN is not activated, please wait for 2 minutes and then check again.

3. If it remains inactivated like under, please go back to section3.1 and do again.

6. Check the LTE register status.

In window Config, input command mobile cmd at 2 at+cops? to check the register status of module 2. You can input the command for several times to get exact status.

Tips:

The command format is: mobile cmd at X at+cops?

X means channel number.

In window ADA, you will see the following print, " Claro AR Claro AR",7 means SIM card has registered to LTE network of Claro:

Tips:

The print format is “xxxxxxxxx”,Y

“xxxxxxxxx” means current registered network.

Y means current registered network mode; Value 7 is LTE network.

7. Configure the IMS setting in module

In window Config, input command mobile cmd at 2 AT+QVOLTEDBG to check the IMS setting status of module 2.

Tips:

The command format is mobile cmd at X AT+QVOLTEDBG

X means channel number.

In ADA window, you will see the following print.

The QNVFR="/nv/item_files/ims/IMS_enable" means the IMS setting status.

The value of QNVFR 0 that’s means disable, it should 1.

In window Config, input command: mobile cmd at 2 AT+QNVFW="/nv/item_files/ims/IMS_enable", 01to enable the IMS.

Tips:

The command format is mobile cmd at X AT+QNVFW="/nv/item_files/ims/IMS_enable",01

X means channel number.

In ADA window, you will see the following print.

Then reboot the module 2.

In window Config, input command mobile cmd at 2 AT+CFUN =1,1 to reboot the current module 2, for the purpose of activating the MBN setting.

After module up, check the IMS setting status again. The value of QNVFR (namely 1) in QNVFR="/nv/item_files/ims/IMS_enable" means IMS has been enabled.

8. Check the IMS register status

In window Config, input command mobile cmd at 2 at+qcfg=”ims” to check the IMS register status of module 2. You can input the command for several times to get exact status.

Tips:

The command format is: mobile cmd at X at+qcfg=”ims”

X means channel number.

In ADA window, you will see the following print. The "ims",0,1 means SIM card has registered to IMS network.If the IMS is unregistered, please wait for 2 minutes and then check again.

Tips:

The print format is: "ims",X,Y

X means register mode; Value 0 means automatic.

Y means register status; Value 1 means registered while Value 0 means unregistered.

When the SIM card is registered to IMS successfully, you can test call to prove that.

9. Check the network status when call

In window Config, input command mobile cmd at 0 atd8929644377; to call

Tips:

The command format is: mobile cmd at X atdYYYYYY;

X means channel number.

YYYYYY means the called number

In ADA window, you will see the following print.

Keep the call and in window Config, input command mobile cmd at 2 at+cops? to check the current status of module 2.

In window ADA, you will see the following print, "Claro AR Claro AR",7 means SIM card has been kept in Claro LTE network and not fall after rise to 2G/3G network.

The test proved that the SIM Card used VoLTE now!