--- title: "RealtimeSIP team (@realtimesip) | Hashnode" description: "RealtimeSIP team (@realtimesip) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@realtimesip" --- @realtimesip # RealtimeSIP team @realtimesip · Joined November 2025 ### [Build AI Call Agents with Azure OpenAI Realtime API (Start FREE with $200 Credits): Manual vs. RealtimeSIP](https://blog.realtimesip.com/build-ai-call-agents-with-azure-openai-realtime-api-start-free-with-200-credits-manual-vs-realtimesip?utm_source=hashnode&utm_medium=feed) TL;DR: Azure gives you $200 FREE credits to test AI call agents with GPT-4o voice. Build it yourself with Azure + Twilio + Node.js (12+ hours, 450+ lines of code) or use RealtimeSIP (paste Azure endpoint, 5 minutes, zero code). EU data residency incl... 11 min read · [blog.realtimesip.com](https://blog.realtimesip.com/build-ai-call-agents-with-azure-openai-realtime-api-start-free-with-200-credits-manual-vs-realtimesip?utm_source=hashnode&utm_medium=feed) [Nov 9, 2025](https://hashnode.com/posts/build-ai-call-agents-with-azure-openai-realtime-api-start-free-with-200-credits-manual-vs-realtimesip/6910ff9aa60f58194b551455) ### [Build AI Call Agents with OpenAI Realtime SIP: The Manual Way vs. RealtimeSIP](https://blog.realtimesip.com/build-ai-call-agents-with-openai-realtime-sip-the-manual-way-vs-realtimesip?utm_source=hashnode&utm_medium=feed) Create AI call agents rapidly with OpenAI Realtime SIP. Choose between the manual build or an easy 5-minute setup with RealtimeSIP 5 min read · [blog.realtimesip.com](https://blog.realtimesip.com/build-ai-call-agents-with-openai-realtime-sip-the-manual-way-vs-realtimesip?utm_source=hashnode&utm_medium=feed) [Nov 9, 2025](https://hashnode.com/posts/build-ai-call-agents-with-openai-realtime-sip-the-manual-way-vs-realtimesip/69108dc792da655dccafabe7)