Hi, You have posted this quite a while ago. Is this fixed now? Could you please post the full CLI config (without the passwords of course) of your switch? Thank you very much for your information in advance. KR, 

Hi Richard, I have the same issue.What do you have as Line0 configuration and chat script? Do you have this? line 0/0/0 exec-timeout 0 0 ! Calls the chat-script script dialer LTE ! activates the script it did not work without it for GSM card....