Patent ID: 11877342
Assignee: T-MOBILE USA, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method comprising
receiving, from an over-the-top (OTT) client of a user equipment (UE) associated with a wireless telecommunications network, a request to establish an emergency call;
based on the emergency call being received from an OTT client, temporarily associating an emergency route back number (ERBN) with the UE during the emergency call and at least for at least a period of time after the emergency call has ended;
in response to receiving a subsequent request from the OTT client to establish a subsequent emergency call prior to an expiry of the period of time after the emergency call has ended, re-starting the predetermined period of time; and
removing the association of the ERBN with the UE upon an occurrence of one or more events after the subsequent emergency call has ended.