23.1673GPPIP Multimedia Subsystem (IMS) emergency sessionsRelease 17TS
The following options from the normative clauses of this TS are applicable in cdma2000 HRPD systems with a PDS core network:
1) Clause 7.1.1, step 4 "The IP-CAN may support a UE indication that this request is for an emergency service".
The following options from the normative clauses of this TS are not applicable in cdma2000 HRPD/PDS systems:
1) Clause 4.1 "The P‑CSCF serving the emergency call is the IMS network entity which may retrieve the location identifier from the IP‑CAN".