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

Claim 0:
1. A system comprising:
one or more processors;
a memory; and
one or more components stored in the memory and executable by the one or more processors to perform operations comprising:
receiving, from a user equipment (UE) associated with a wireless telecommunications network, a request to establish an emergency call with a Public Safety Answering Point (PSAP);
identifying that the UE is associated with a non-unique telephone number, and the non-unique telephone number is associated with a hunt group;
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 UE to establish a subsequent emergency call with the PSAP 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.