anchor.diff:  [cols="30%,25%,15%,15%,15%"]
   |===
   | INFORMATION ELEMENT | REFERENCE | PRESENCE | FORMAT | LENGTH
  -| Message Type (0xf5) | 3GPP TS 12.21 9.1 | M | V | 1
  -| Object Class | 3GPP TS 12.21 9.2 | M | V | 1
  -| Object Instance | 3GPP TS 12.21 9.3 | M | V | 3
  +| Message Type (0xf5) | 3GPP TS 52.021 9.1 | M | V | 1
  +| Object Class | 3GPP TS 52.021 9.2 | M | V | 1
  +| Object Instance | 3GPP TS 52.021 9.3 | M | V | 3
   5+<| _Object Class specific IEs follow, see <<addnl_obj_classes>>..._
   |===
   
  
positive.code: 
  
  ==== Messages Not Implemented by OsmoBTS
  .3GPP TS 12.21 messages not implemented by OsmoBTS
  [options="header",cols="10%,10%,80%"]
  |===
  | TS 12.21 § | type code (hex) | Message
  3+<| *SW Download Management Messages:*
  .3+.| 8.3.1 | 0x01 | Load Data Initiate
              | 0x02 | Load Data Initiate Ack
  
negative.code: [[ie_chan_comb]]
  ==== Additional Channel Combinations
  
  In addition to 3GPP TS 52.021 Chapter 9.4.13, the following channel
  combinations are supported:
  
  .Additional Channel Combinations
  