Section: 9.9.4.23 Control plane only indication
Content: The purpose of the Control plane only indication information element is to indicate that a PDN connection is only for control plane CIoT EPS optimization, e.g. the PDN connection is with an SCEF (see 3GPP TS 23.401[ General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access ]  [10]). The Control plane only indication information element is coded as shown in figure 9.9.4.23.1. The Control plane only indication is a type 1 information element. Figure 9.9.4.23.1: Control plane only indication information element Table 9.9.4.23.1: Control plane only indication information element