anchor.diff:  | 0x47 | 9.4.32 | Measurement Result  |  | _ignored_
   |===
   
  -==== IEs Not Conforming to TS 12.21
  -
  -.IEs not conforming to TS 12.21
  +==== IEs Not Conforming to TS 52.021
  +
  +.IEs not conforming to TS 52.021
   [options="header",cols="5%,10%,30%,55%"]
   |===
  -| tag (hex) | TS 12.21 § | IE name | Description
  +| tag (hex) | TS 52.021 § | IE name | Description
   | 0x15 | 9.4.21 | HSN              | presence causes NACK response
   | 0x17 | 9.4.23 | HW Description   | _ignored_ by OsmoBTS, but coding may differ, see <<ie_hw_desc>>
   | 0x1b | 9.4.27 | MAIO             | presence causes NACK response 
  
positive.code: [[addnl_obj_classes]]
  === Additional Object Classes
  
  In addition to 3GPP TS 12.21 Chapter 9.2, the following managed objects
  are supported:
  
  .Additional Managed Object Classes
  
negative.code: 
  ==== Messages Specific to OsmoBTS
  
  .Messages specific to OsmoBTS, not found in 3GPP TS 52.021
  [options="header"]
  [options="header",cols="20%,55%,5%,20%"]
  |===
  