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                               Release Notes PN 93009457
                                
                                DigiMesh 2.4 RF Modules
                                      Version 8x70
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INTRODUCTION
  These release notes document changes made to the firmware on XBee and XBee-PRO
  DigiMesh 2.4 radios.

ENHANCEMENTS
 - Added the ATDM command which allows certain DigiMesh features to be disabled.

 - Added the ATN? command which allows the maximum timeout for a Network 
   Discovery command to be queried.
 

BUG FIXES
  - Fixed bug where corrupt RF data could indefinitely propagate.

  - Fixed bug where repeatedly transmitting and power-cycling or resetting a 
    module could cause receiving radios to erroneously drop packets.
    
  - Fixed bug where CTS would erroneously assert too early on power-up (before 
    the radio was ready to receive serial data)

  - Fixed bug where the Route Information API frame was being output with
    extra invalid data at the end of the frame.

  - Fixed bug where the Energy Detect command (ATED) would occasionally cause
    the module to reset.

  - Fixed bug where the Energey Detect command (ATED) would change the radios
    operating channel.
    


KNOWN LIMITATIONS
 - When streaming broadcast messages, occasionally receiving radios will
   output a packet out its uart multiple times.

 - The ATED command does not work in API mode or via remote AT commands.


HISTORY
  Version 8x67
    ENHANCEMENTS:
      - A software reset can be initiated by asserting a serial break for more 
        than 5 seconds.

      - Added code to greatly reduce the probability of packet corruption that
        can occur when using radios in close proximity to each other.

    BUG FIXES
      - Fixed bug where broadcasting with multiple nodes could cause a third node 
        to lock up. When locked up the module can not receive, but can enter 
        command mode and transmit. After transmitting, the locked up module will 
        recover.

      - Fixed bug where the D8 command could not be set to 1.

      - Fixed bug where the default for the .mxi file did not match the firmware 
        default.

  Version 8x65
    ENHANCEMENTS:
      - Added the ability to enable a clear channel assessment (CCA) feature with 
        the ATCA command.
      - Added Test Link functionality for RF link reliability testing.
      - Added the ability to enable a Trace Route or NACK on transmitted packets.
      - Added a Find Neighbor (ATFN) command.
      - Added a command (ATAG) for building and repairing routes to a node and for
        replacing aggregator nodes.    

    BUG FIXES
      - Querying ATOS for large sleep periods was resulting in the wrong value.
        This has been fixed.
      - Certain payloads of encrypted packets were not getting sent correctly.
        This has been fixed.
      - Fixed bug where a remote WR command would immediately apply changes to CH 
        when not desired.
      - Fixed bug where changes to the IF parameter would apply a value other than 
        that set.
      - Removed the BD8 option from the .mxi file because the error margin at that 
        baud rate is unacceptable.
      - Fixed bug where some radios would not receive data after powerup until after
        the receiving radio had transmitted data.


  Version 8x62
    ENHANCEMENTS:
      - Added asynchronous sleep modes.
      - Improved timing for synchronous sleep networks (less wake time is necessary) 
    
    BUG FIXES
      - Improved accuracy of analog to digital conversions.
      - Increased the time that a node will wait to receive a network discovery
        response to account for the time it takes for the request to propagate.
      - Fixed a bug where the pullup resistor would not get properly set on the DIN line.
      - Fixed a bug where the default for the D2 command on the RS232 adapter build was
        wrong.  This caused higher than necessary sleep currents.
      - Fixed bug where the CB command would not wake up an end device like a real 
        button press would.
      - Fixed a bug which would cause reduced receiver sensitivity on some modules.
      - Fixed bug where no status was returned for a failed RMT AT CMD Request transmission.
      - Fixed a sleeping router bug which would cause a module to continue being a sleep
        coordinator even after it had received a sync from a senior node.