What is USP? 
The User Services Platform is a standardized protocol for managing, monitoring, upgrading, and controlling connected devices. USP allows service providers and consumer electronics manufacturers to:
Create interoperable and vendor-independent managed Wi-Fi systems.
Perform lifecycle management of consumer connected devices.
Support independent applications for smart networking products.
Enable IoT and consumer electronics upgradability for critical security patches.
Develop applications that gather the telemetry necessary to mass data processing, AI, and machine learning.
Bootstrap and configure newly installed or purchased devices and virtual services.
Let customer support monitor and troubleshoot connected devices, services, and home network links.
Easily map the home network to control service quality and monitor threats.
Securely control IoT, smart home, and smart networking functions locally or from the Cloud
USP represents the natural evolution of the Broadband Forum’s CPE WAN Management Protocol (CWMP), commonly known as TR-069. It uses an expanded version of the Device:2 Data Model to represent device operations (firmware upgrades, reboots, etc.), network interfaces, events, and service functions (IoT functions, VoIP, etc.).
How to use this site: 
The specification directory contains the full text of the current version of the protocol, and the schema (currently in Protocol Buffers) for the syntax of USP messages. Use this section when developing your USP protocol stack.
The data models link will take you to the generated versions of the Device:2 data model (also known as “TR-181i2 - Device:2 Data Model for TR-069 devices and USP Agents”) specific to USP. The raw xml used in development can be found in this directory. Use these to find the Objects necessary to the USP protocol stack, and when developing the Objects, interfaces, services, etc. that you want to manage and control with USP.
The USP Agent Test Plan provides a list of the test cases executed to validate USP Agent implementations and seek certification.
Dev Resources provides several links for how to build, test, certify, and bring to market USP based solutions.
The FAQ page gives information on frequently asked questions. Use this section to learn more about USP and getting involved in its ongoing development.
Current Version: 1.2 
About this version: 
This specification includes:
- Architectural overview
- Discovery mechanisms for Controllers and Agents
- Basic CRUD messages between Controllers and Agents
- Use of USP Record encapsulation for end to end integrity, security, and privacy
- Data model Objects specific to protocol functionality, object defined operations, and notifications/events
- Protocol buffers encoding schema
- Use of WebSockets, MQTT, and STOMP as message transfer protocols (MTP)
- A system for authentication and authorization
- Extensions for bulk data collection, firmware management, software module management, and device proxying
- Theory of operations for using a USP Agent to control IoT devices and systems
USP is developed by the Broadband Forum. For more information, visit https://www.broadband-forum.org