Busy tone - When the button is pressed, 2N® Analog Intercom gives the busy tone

  • Enter the programming menu
  • Enter the code for the button memory and wait for a while
  • The voice menu tells you which number is programmed / check stored number
  • Check which dialing is set, DTMF or pulse (see the manual, chapter 9)
  • Check the PBX settings for PSTN numbers in the PBX system, it is necessary to dial prefix (mostly 0 or 9)