scope:

This standard specifies Emergency Telecommunications Service (ETS) requirements for an Evolved Packet System (EPS) consisting of the Evolved UMTS (Universal Mobile Telecommunications System) Terrestrial Radio Access Network (E-UTRAN) and the Evolved Packet Core (EPC) for support of:

• NGN GETS Voice,

• NGN GETS Video,

• NGN GETS Guaranteed Bit Rate (GBR) Data, and

• NGN GETS Data Transport.

This standard describes requirements for NGN GETS treatments for:

• E-UTRA access for an NGN GETS session initiated from, or terminated to the UE via the E-UTRA air interface and the E-UTRAN access network;

• Advance Priority-SPR and Advance Priority-HSS;

• Congestion control;

• Circuit Switched Fallback (CSFB) to UTRAN/GERAN;

• CSFB to 1xRTT;

• Intra-RAT E-UTRAN handover;

• Inter-RAT (IRAT) handover to/from the UMTS PS domain; and

• IRAT handover to/from eHRPD.

This standard assumes a 3GPP Release 10 system.