MC7700 succefully connected to GSM/WCDMA! Need LTE...


#1

We are running the latest linux ubuntu version. We have successfully connected with several non-LTE technologies. We are using AT commands to communicate with the modem. For example the normal process of connecting to the internet that we have been using (AT commands) is:

  1. AT!GSTATUS?
    this checks a bunch of information regarding connection. When the computer boots and all our settings are good, we are able to connect to the internet automatically.

  2. AT!SELRAT=
    so far, we have been using n = 5, 6, and 7 (“GSM and UMTS Only”, “LTE Only”, and “GSM, UMTS, LTE”, respectively). Only 5 and 7 have been able to connect to the internet. When 6 is selected (“LTE Only”) we have tried everything but with no success.

  3. AT!SCPROF=,"",1,0,0,0
    our pid is set up as:
    AT+CGDCONT=,“IP”,“Broadband”, since we are using AT&T

  4. AT!SCACT=1,
    this is one of the problematic steps when using “LTE only”. it has worked in the past but it is not working any more.

  5. AT+CGATT=1
    this one almost never works in “LTE only” mode.

These are the steps we take to get internet connectivity with the non-LTE technologies. We are wondering what additional steps or settings we have to change in order to connect to LTE. Any help is appreciated.


#2

Hi,

Check for BAND setting using AT!BAND command.

Thanks.