Section: 10.5.4.5 Bearer capability
Content: The purpose of the bearer capability information element is to describe a bearer service. The use of the bearer capability information element in relation to compatibility checking is described in annex B. The bearer capability information element is coded as shown in figure 10.5.88/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ]  and tables 10.5.102/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ]  to 10.5.115/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] . The bearer capability is a type 4 information element with a minimum length of 3 octets and a maximum length of 16 octets. Figure 10.5.88/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ]  Bearer capability information element NOTE 1: The coding of the octets of the bearer capability information element is not conforming to ITU Recommendation Q.931 [53]. An MS shall encode the Bearer Capability infomation element according to A/Gb mode call control requirements also if it is requesting for a service in Iu mode, with the following exceptions: 1. A mobile station not supporting A/Gb mode and GERAN Iu mode for the requested bearer service shall set the following parameters to the value "0": - Maximum number of traffic channels (octet 6e, bits 1-3) - Acceptable Channel coding(s) (octet 6e, bits 4, 5 and 7) 2. Furthermore, a mobile station not supporting A/Gb mode and GERAN Iu mode for the requested bearer service shall also set the following parameters to the value "0", if the respective octets have to be included in the bearer capability information element according to subclause 10.5.4.5.1 and 3GPP TS 27.001[ General on Terminal Adaptation Functions (TAF) for Mobile Stations (MS) ]  [36]: - UIMI, User initiated modification indication (octet 6f, bits 5-7) - Acceptable Channel Codings extended (octet 6g, bits 5-7) For UTRAN Iu mode the following parameters are irrelevant for specifying the radio access bearer, because multiple traffic channels (multislot) are not deployed, see 3GPP TS 23.034[ High Speed Circuit Switched Data (HSCSD); Stage 2 ]  [104]. However, the parameters if received, shall be stored in the MSC, and used for handover to A/Gb or GERAN Iu mode: - Maximum number of traffic channels (octet 6e, bits 1-3) - Acceptable Channel coding(s) (octet 6e, bits 4, 5 and 7) - UIMI, User initiated modification indication (octet 6f, bits 5-7) - Acceptable Channel Codings extended (octet 6g, bits 5-7) NOTE 2: The following parameters are relevant in UTRAN Iu mode for non transparent data calls for deciding which RLP version to negotiate in order to avoid renegotiation of RLP version in case of inter-system handover from UTRAN Iu mode to A/Gb or GERAN Iu mode, see 3GPP TS 24.022[ Radio Link Protocol (RLP) for circuit switched bearer and teleservices ]  [141]: - Maximum number of traffic channels (octet 6e, bits 1-3) - Wanted air interface user rate (octet 6f, bits 1- 4) - UIMI, User initiated modification indication (octet 6f, bits 5-7). Table 10.5.102/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element (continued...) Table 10.5.102/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element (continued) Table 10.5.103/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ]  Bearer capability information element Table 10.5.104/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.105/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.106/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.107/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.108/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.109/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.110/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.111/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.112/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.113/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.114/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.115/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element Table 10.5.115a/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Bearer capability information element