Callivex is a wholesale carrier delivering SIP termination, DID numbers, and a white-label reseller program engineered for high-volume outbound traffic. Direct EU carrier interconnects, per-second billing, and a portal your customers can run themselves.
Built for the operators others reject
Everything wires through the same Kamailio + Asterisk + RTPEngine stack with real-time CGRateS billing underneath. We don't try to be everything — we do voice transport, well.
A–Z outbound voice on direct EU carrier interconnects. CLI + non-CLI, predictive-dialer-friendly, per-second billing with five-decimal rate precision.
Learn moreLocal DIDs in 30+ countries, toll-free where regulators permit, paperless porting on supported regions, channel-pooled inbound delivery.
Learn moreInbound + outbound trunks for PBX, contact-center platforms, and softswitches. IP authentication or registration, BYO IP whitelist.
Learn moreWhite-label portal, multi-tier markup, per-sub-account balance and channel caps, real-time CDRs. Sign on, set your margin, switch on customers.
Learn moreHigh calls-per-second, short-duration call profiles, predictive-dialer attempt rates, and ANI rotation are the design center — not afterthoughts. Channel caps and CPS limits enforce per-customer at the SBC, so one runaway dialer can't take down a route.
Three layers of pricing get composed automatically. Wholesale cost on the bottom, your platform margin in the middle, the reseller's margin on top. Every CDR is split per second, balances drain in real time, and calls cut at zero.
Callivex is opinionated about what we accept. We sign customers we can serve well, on routes we can stand behind.
Predictive dialers, high CPS, ANI rotation, short-duration call mixes. AUP that doesn't surprise you with a take-down notice the first time you spike.
Wholesale termination + DIDs as a feed for your retail product. Bring your own SBC or use ours.
Take a portal under your brand, set your margin, onboard your customers. We handle the carrier relationships and the billing engine.
Voice agents, IVRs, dialers, voicebots. SIP trunks with REFER, early media, and codec negotiation that doesn't fight you.
Country-mix routing, time-of-day plans, and per-campaign sub-accounts so each operation has its own balance and reporting.
Trunks behind your tenant fabric. Channel pooling, per-tenant CDRs, and inbound DID delivery into your platform.
We onboard new customers on a prepaid model. Send the destinations you care about; we'll come back with rates and a test trunk.