LE910 Data call setup: 3G vs 4G

Posted on September 13, 2016 by Giorgio Bresciani

Giorgio Bresciani says:

September 13, 2016 at 11:55 am

Hello, we’re porting our 2G-3G application on new 4G product based on LE910.

I’ve looked for an application note or previous thread about AT commands sequence to setup a data call to mobile network APN, but I didn’t found.

Is this identical to 2G-3G one, starting from context definition and activation AT+CGDCONT ?

If I don’t care to select 3G or 4G network (AT+WS46 command), does the module automatically switch to the best available to keep the connection always on?

What does the second context AT+GDSCONT do?

Thanks in advance.
1. Cosmin Buhu says:
  
  September 14, 2016 at 8:45 am
  
  For internal TCP/IP stack, yes the procedure is the same. For PPP, from my colleague:
  
  On 4G, the differences are also operator related and technology related.
  For example, on Verizon products (LE910-SVxx ) in US, you can use only CID 3 for data connection (PPP included) and you can’t use any other CID.
  
  Maybe this customer can use CID 3 for PPP in all technologies (2G – 4G).
  In the majority of the cases, it should work.
  
  The default WS46 settings is
  
  25 3GPP Systems (GERAN and UTRAN and E-UTRAN)
  
  with automatic switching.