04.183GPPMobile radio interface Layer 3 specificationRadio Resource Control (RRC) protocolRelease 1999TS
10.3.1 Skip indicator
Bits 5 to 8 of the first octet of every Radio Resource management message contain the skip indicator. A message received with skip indicator different from 0000 shall be ignored. A message received with skip indicator encoded as 0000 shall not be ignored (unless it is ignored for other reasons). A protocol entity sending a Radio Resource management message shall encode the skip indicator as 0000.