Abstract: Aspects presented herein may improve an emergency call establishment procedure by enabling a UE to transmit emergency register messages more efficiently. In one aspect, a UE transmits, to a network entity, a request to set up an ePDN. The UE receives, from the network entity, a response to the request comprising a set of multiple P-CSCF addresses. The UE transmits, to the network entity, a registering message to each of the multiple P-CSCF addresses simultaneously. The UE receives, from the network entity, at least one acceptance message from at least one of the set of multiple P-CSCF addresses in response to the registering message. The UE transmits, to the network entity, an invitation message to a P-CSCF address from which an acceptance message is received to establish an emergency call connection.