Voice gateways serve as the bridge between traditional phone systems and modern VoIP networks. In this episode, we explain how voice gateways convert analog voice signals into digital packets and how they integrate with systems like PBXs and SIP servers. You’ll learn about protocol translation, codec negotiation, and how gateways ensure interoperability between PSTN lines and IP-based communication systems.

We also cover common deployment models, such as digital gateways using PRI trunks and analog gateways connecting to FXS/FXO ports. Troubleshooting topics include one-way audio, codec mismatches, and jitter buffering. This episode is crucial for anyone managing converged voice and data networks or preparing for performance-based VoIP scenarios on the exam.