# Technical Reference

- [What is CGNAT and How does it work?](/support/services/connectivity/internet-services/technical-reference/what-is-cgnat-and-how-does-it-work.md)
- [Ethernet Service Shaping Requirements](/support/services/connectivity/internet-services/technical-reference/ethernet-service-shaping-requirements.md): This document outlines the shaping requirements for business grade ethernet services such as NBN Enterprise Ethernet and Telstra EA.
- [Router configuration for Telstra 4G/5G services](/support/services/connectivity/internet-services/technical-reference/router-configuration-for-telstra-4g-5g-services.md): This document outlines the steps for configuring a router or LTE/5G module for a Telstra 4G/5G service
- [How to Enable SRA on Netcomm Routers](/support/services/connectivity/internet-services/technical-reference/how-to-enable-sra-on-netcomm-routers.md)