9.2.1.4 Raw Binary

Raw binary can be useful for transferring data that is either transmitted or received over the network. Only a limited number of commands support this format. Binary transfers are achieved by the DCE leaving terminal mode and remaining in raw mode until one of the following conditions is met:

• A pre-specified number of bytes has been exchanged between DTE and DCE
• An ‘escape sequence’ of three consecutive ‘+’ characters has been sent from the DTE to the DCE
  Note: The ‘escape sequence’ method for returning to terminal mode relies not only on receipt of the ‘+++’ sequence, but also the absence of any further input for a period of time. By default this is 1 second.