Section: 8.8 EPS Bearer ID (EBI)
Content: EPS Bearer ID (EBI) is coded as depicted in Figure 8.8-1. The overall length of the IE is 5 octets. In future releases of the spec additional octets may be specified and new semantic for the spare bits may be defined. Figure 8.8-1: EPS Bearer ID (EBI) The following bits within Octet 5 shall indicate: - Bit 8 to 5 – Spare, for future use and set to zero. - Bit 4 to 1 – EPS Bearer ID (EBI) field, the coding of EBI field and its value range is specified in 3GPP TS 24.007[ Mobile radio interface signalling layer 3; General Aspects ]  [30], clause 11.2.3.1.5, bits 5 to 8. The sending GTPv2 entity shall include a EBI with a value between '1' and '4' only when the target GTPv2 entity is known to support 15 EPS Bearers, based on per PLMN local configuration.