B.2 Special ICS to identify optional branches

36.523-23GPPEvolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Packet Core (EPC)Part 2: Implementation conformance statement (ICS) proforma specificationRelease 17TSUser Equipment (UE) conformance specification

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

Table B.2-1 provides a list of ICS definitions describing optional UE behaviour which is not associated with a ICS defined in Annex A.

The ICS specified in the present section are not used in TTCN or in TC prose specification. The provision of answer if the UE supports any of one these ICS is not a prerequisite for TC execution. Rather, the ICS are specified for the sole purpose of facilitating the work of any organisation, e.g. TC validation in Certification organisation, in identifying the optional test branches through which an UE has gone during test execution.

Table B.2-1: UE optional behaviour

Item	Definition	Ref.	Release	Mnemonic	Comments
1	The UE performs IPv4 address allocation by DHCPv4 on the user plane		Rel-8	pb_IPv4_DHCPv4_AAUP
2	The UE sets the ESM information transfer flag in the last PDN CONNECTIVITY REQUEST message		Rel-8	pb_ESM_InfoTransFlag_PDNCR