Location and Routing Support for Non-Operator-Managed Over the Top (OTT) Citizen-to-Authority Emergency Services
|Publication Date:||1 February 2017|
The scope of this standard is twofold. First, to identify and evaluate technical methods by which an operator of a user access network can acquire and convey location used for routing an Over The Top VoIP emergency call or an Over The Top IP-based text messaging emergency session. Secondly, to identify and evaluate technical methods in the case of an IP Multimedia Subsystem (IMS)-based operator-managed interconnected VoIP or Text Messaging over IP (ToIP) service by which location information can be acquired and conveyed for routing VoIP or ToIP emergency calls. For both cases, the location information is made available for presentation to the appropriate Public Safety Answering Point (PSAP) for dispatch purposes.
In evaluating different methods, the standard considers feasibility, compatibility with existing deployment, security, privacy, regulatory constraints, and inter-operator charging. The standard applies to multiple access types including wireless (e.g., Long Term Evolution [LTE], Wi-Fi) and wireline (e.g., DSL) broadband networks.
The standard is intended to support location acquisition, conveyance, and dereferencing for the purposes of both routing and dispatch for an IP-based emergency call or text messaging session using voice Global Text Telephony (GTT) or text messaging made by a fixed, nomadic, or mobile subscriber in North America. Also, in this standard the term access network refers to 3GPP access technologies.