Section: 10.5.7.7 Uplink data status
Content: The purpose of the Uplink data status information element is to indicate to the network which preserved PDP contexts have uplink data pending. The Uplink data status information element is a type 4 information element with 4 octets length. The Uplink data status information element is coded as shown in figure 10.5.149/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ]  and table 10.5.166/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] . Figure 10.5.149A/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ]  Uplink data status information element Table 10.5.166/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Uplink data status information element NSAPI uplink status (octet 3 and 4) Octet 3, bits 1 to 5 are all spare and shall be encoded as 0 NSAPI(5) – NSAPI(15) (octets 3 – 4): 0 no uplink data are pending for the preserved PDP context or the PDP context is PDP-INACTIVE or is PDP-ACTIVE with a RAB already established. 1 uplink data are pending for the preserved PDP context.