Section: 8.32 Bearer Flags
Content: Bearer Flags is coded as depicted in Figure 8.32-1. Figure 8.32-1: Bearer Flags The following bits within Octet 5 indicate: - Bit 1 – PPC (Prohibit Payload Compression): This flag is used to determine whether an SGSN should attempt to compress the payload of user data when the users asks for it to be compressed (PPC = 0), or not (PPC = 1). - Bit 2 – VB (Voice Bearer): This flag is used to indicate a voice bearer when doing PS-to-CS (v)SRVCC handover. - Bit 3 – Vind (vSRVCC indicator): This flag is used to indicate that this bearer is an IMS video bearer and is candidate for PS-to-CS vSRVCC handover. - Bit 4 - ASI (Activity Status Indicator): When set to 1, this flag indicates that the bearer context is preserved in the CN without corresponding Radio Access Bearer established. The target S4-SGSN shall keep the bearer context associated with this indicator preserved. When the target S4-SGSN sends Relocation Request message towards the target RNC, the target S4-SGSN may not request to setup the RABs for those bearer contexts associated with this indicator.