GPRS TCP Connection CME ERROR 558 – cannot resolve DN

4 thoughts on “GPRS TCP Connection CME ERROR 558 – cannot resolve DN

  1. Hi Cosmin,

     

    Most of the times i want to establish a new tcp connection, i get this error, is there a way to improve DNS resolution ?

     

    I’ve already activated DNS CACHING. 

     

    Also is it possible to decrease AT#SGACT timeout ? 

    1. Hi,

      please could you post the firmware version (at+cgmr) and which server you try to connect to try to reproduce your scenario at my side?