Outgoing and incoming calls don't work with my EHS6T modem | Telit Cinterion IoT Developer Community
December 13, 2016 - 2:59pm, 2134 views
Hi all,
When I tried to make an outgoing voice call with my EHS6T modem using AT command, I received a NO CARRIER answer. The connection is never established. I receive the same answer (NO CARRIER) when I try to allow an incoming call.
Could you please tell me what can be the root causes of this kind of behaviour? Do I have to change the configuration of my modem first before testing the calls ?
Here is a copy of the exchanges between the modem and the host:
command : ATD06******00;
Response : OK
Response : NO CARRIER
Response : +CREG: 1,"4F93","0025007B",2
Response : +CREG: 1,"4F93","002500AA",2
command : ATA
Response : NO CARRIER
command :ATI1
Response :
Cinterion
EHS6
REVISION 03.001
A-REVISION 00.000.31
Thank you in advance.
Best regards,
Ismael FAYE
Hello,
Voice calls should be working without any additional configuration.
Are you sure that the SIM card supports voice calls and the number is properly formatted?
I assume that you are not using the Java MIDlet.
Regards,
Bartłomiej
Hello,
Thank you for rapid answer.
I tested with another SIM card and the call is established with this new card. So know I have to know why it was not working with the previous SIM card and what the differences between the two cards.
Concerning Java MIDlet, what is it about? What is it used for? When do we need to use it and how should it be use?
Thank you in advance.
Best regards,
Ismael FAYE
Hello,
Maybe the SIM card is data only and it has not voice calls subscription. Have you checked the card with a phone?
It is possible to run the custom Java program on the module. And in such program you can also execute AT commands - that's why I have mentioned this - in such case there might be additional issues to check in case of unsuccessful voice call. There is a Java API provided and all environment with that you can implement your own logic without using the external microcontroller. You are able to use the hardware interfaces and network connections, there is also a flash file system where you can store data.
Regards,
Bartłomiej