anchor.diff:  [[CHANNEL_REQUIRED]]
   ==== Channel Required
   
  -Conforms to 3GPP TS 08.58 § 8.5.3, with these limitations:
  +Conforms to 3GPP TS 48.058 § 8.5.3, with these limitations:
   
   ._Channel Required_ message IE details
   [options="header",cols="10%,30%,60%"]
   |===
  -| TS 08.58 § | IE Name | Handling
  +| TS 48.058 § | IE Name | Handling
   | 9.3.16 | Physical Context | never sent by OsmoBTS
   |===
   
  
positive.code: [cols="30%,25%,15%,15%,15%"]
  |===
  | INFORMATION ELEMENT | REFERENCE | PRESENCE | FORMAT | LENGTH 
  | Message discriminator | 08.58 9.1 | M | V | 1
  | Message type | <<own_msg_types>> | M | V | 1
  | Channel number | 08.58 9.3.1 | M | TV | 2
  | Frame Number | 08.58 9.3.8 | O | TV | 3
  |===
  
  NOTE:: This message is *not* used by Osmocom style dynamic channels
  
negative.code: [[SACCH_FILLING]]
  ==== SACCH Filling
  
  Conforms to 3GPP TS 48.058 § 8.6.2, with these limitations:
  
  ._SACCH Filling_ message IE limitations
  [options="header",cols="10%,30%,60%"]
  |===
  | TS 48.058 § | IE Name | Handling
  | 9.3.30 | System Info Type | See <<SACCH_INFO_MODIFY>> for available types
  | 9.3.23 | Starting Time | _ignored_
  |===
  