Patent ID: 11956322
Assignee: VERIZON PATENT AND LICENSING INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A network device, comprising:
one or more processors configured to:
receive, for an emergency call, a session initiation protocol (SIP) invite that includes:
a registered address of a user device that initiated the emergency call, and
network slide selection assistance information (NSSAI);

determine, based on the NSSAI uniquely identifying a private network, that the user device is associated with the private network;
extract the registered address of the user device from a contact header of the SIP invite and based on the user device being associated with the private network; and
provide the registered address to another network device configured to determine a registered geographic location of the user device, based on the registered address, and to provide the registered geographic location to a public safety answering point associated with the emergency call.