Section: 9.9.4.22 Header compression configuration
Content: The purpose of the Header compression configuration information element is to negotiate ROHC channel setup parameters specified in IETF RFC 5795 [37] and, optionally, provide additional header compression context setup parameters. The Header compression configuration information element is coded as shown in figure 9.9.4.22.1 and table 9.9.4.22.1. The Header compression configuration is a type 4 information element with a minimum length of 5 octets and a maximum length of 257 octets. The optional Additional header compression parameters container field conveys the additional header compression context setup parameters as specified in 3GPP TS 23.401[ General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access ]  [10] in a generic container. This field corresponds to the profile-specific information in the header of the ROHC IR packet type in IETF RFC 5795 [37]. Figure 9.9.4.22.1: Header compression configuration information element Table 9.9.4.22.1: Header compression configuration information element