Contact us Technical Author By Yakov Nissen CTO & SIP Engineer, CallnFax Yakov has been with CallnFax since 2008 and oversees SIP engineering, VoIP infrastructure, number routing, virtual numbers, SIP trunking, and AI voice-agent integrations. His articles focus on practical, real-world guidance for businesses using modern VoIP services. CallnFax | VoIP at the Speed of […]
