Wholesale voice refers to the bulk sale of voice termination capacity between telecommunications carriers, rather than direct sales to end users. Wholesale voice carriers interconnect with each other and with retail operators, enabling calls to reach destinations worldwide. Pricing is per-minute and significantly lower than retail VoIP rates. Wholesale voice customers are typically telecom operators, UCaaS providers, contact centres, and enterprises routing high call volumes internationally.
Wholesale voice is the carrier-to-carrier sale of voice termination capacity, billed per minute at rates below those available to end-user customers. Rather than selling phone services to individual businesses or consumers, wholesale voice carriers sell large blocks of call minutes to other telecoms operators, UCaaS providers, contact centres, and enterprises that route sufficiently high call volumes to justify a wholesale commercial relationship. Typical wholesale voice customers include regional telcos, VoIP resellers, contact centre outsourcers, and enterprises with international call volumes exceeding several hundred thousand minutes per month.
Retail voice services are sold directly to end-user businesses and consumers with per-line monthly fees, bundled minutes, and customer-facing support — think business phone plans from a national telco. Wholesale voice is sold between carriers at per-minute rates without retail markup, with commercial terms based on volume commitments and route quality tiers rather than subscription bundles. Wholesale is not visible to end users; it is the infrastructure layer that retail providers and CPaaS platforms buy to deliver their services. IDT Express operates at the wholesale level, selling directly to operators and high-volume businesses.
Wholesale voice termination is priced per minute, with rates varying by destination country, number type (fixed line vs mobile), and quality tier. Carriers publish rate decks — spreadsheets listing per-minute prices for every international destination — which are updated regularly as underlying carrier costs change. Volume discounts apply above certain monthly minute thresholds. IDT Express offers two quality tiers: Standard routes for cost-optimised traffic, and Platinum routes with full CLI, higher ASR guarantees, and lower post-dial delay at a premium per-minute rate. Rate decks are available on request or via the IDT Express portal.
The global wholesale voice market is served by a mix of large international carriers and specialist wholesale providers. Major players include IDT Express, BICS (a subsidiary of Proximus), iBASIS (owned by Tofane Global), Lumen Technologies, Telin, PCCW Global, and Syniverse. The market is broadly segmented by reach (A-Z global coverage vs regional specialists), quality tier (Platinum/premium vs standard/grey routes), and customer type (carrier-only vs carrier plus enterprise). IDT Express is known for strong A-Z coverage, competitive Platinum route pricing, and direct enterprise sales alongside carrier relationships.
