[F A Q] Not able to establish a voice call

One thought on “[F A Q] Not able to establish a voice call

  1. Q:

    Every time after ATD; the call is aborted and NO CARRIER is received. Why?

     

    A:

    Any character sent after the carriage return and before the OK causes
    call aborting. This can happen when the command is terminated by 0D 0A
    instead of 0D only.
    ATD1234567;<0D><0A> wrong
    ATD1234567;<0D> correct