Wholesale VoIP is the bulk buying and selling of voice termination and origination capacity between carriers, resellers, and enterprises, enabling high-volume calls over IP at a fraction of traditional telecom costs, with the wholesale voice market growing rapidly on the back of internet-based communication, 5G integration, and demand for cost-effective scalable infrastructure. Wholesale VoIP termination is the specific service that routes a call from one provider to another, ultimately delivering it to a standard phone line (PSTN) — the 'last mile' of an international call's journey, handled through carrier partnerships worldwide. Setting up a wholesale VoIP business requires choosing between a carrier-based model (bridging large networks to smaller providers), a reseller model (buying bulk from a primary provider and reselling, with lower infrastructure needs), or value-added services like custom routing and fraud prevention; upfront investments include softswitches and media gateways, real-time billing software, sufficient bandwidth for peak volumes, and regulatory compliance consultation. A softswitch is the central software device that routes calls and separates call control from the media gateway, while servers manage call detail records and service quality. Regulatory considerations span SIP/RTP signaling standards, data protection compliance, emergency 911 routing requirements, and — for international operation — navigating different national data-handling, taxation, and licensing regimes. Economically, common pricing models include per-minute billing, unlimited plans, and volume-tiered pricing, with margins depending on negotiated interconnection fees and network investment that supports scale without quality loss. Softtop provides high-quality A-Z voice termination with premium CLI and non-CLI routes, scalable SIP trunking, and a voice wholesale platform with intelligent routing and real-time monitoring designed for carriers, resellers, and enterprises expanding globally.