Callivex SIP Trunking

6.2easy start · #8 of 30
in SIP Trunking Providers

Free to practise onnot on record
Free trialnot on record
Well documentedyes
Runs where you worknot on record

Runs on api, Web.

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Callivex SIP Trunking is ranked #8 of 30 in SIP trunking providers on The Geeks Club. It runs on API, Web.

Callivex SIP Trunking plans and pricing

All plans

Wholesale SIP trunking Not published Prepaid balance; custom rates quoted per customer based on destination mix, projected volume, and traffic profile. No channel fees · Capacity and call-rate limits set per account · Premium-rate and satellite destinations opt-in callivex.com · 2 Oct 2026

Compared on SIP trunking providers

Number porting: Yes
Emergency calling: Yes
Toll-free numbers: Yes
Encrypted signaling: Yes

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The record

What it does: Callivex provides bidirectional SIP trunks that connect PBXs, contact-center platforms, and softswitches to the public telephone network over IP.
Billing: Calls are billed per connected second with five-decimal rate precision, with no 60-second minimum or six-second rounding.
Prepaid accounts: Accounts use a prepaid balance with real-time balance and usage visibility, and no volume commitments.
PBX compatibility: Callivex says it integration-tests trunks with Asterisk, FreeSWITCH, FreePBX, 3CX, Cisco UCM, Microsoft Teams Direct Routing, and other listed systems.
Authentication: Trunks support IP authentication, SIP registration, or a hybrid configuration, and the default IP-auth option supports up to eight source IPs per trunk.
Resilience: The service describes active-active SBC deployment, per-call carrier selection, and automatic failover on 5xx errors and PDD spikes.
Network coverage: Callivex lists points of presence in Europe, Asia, North America, and the Middle East, with 218 termination destinations.
Phone numbers: Callivex offers inbound local, national, and toll-free numbers in 96 countries, with toll-free availability subject to local regulations.
Security: The network page lists TLS 1.2+ signaling, SRTP media using AES-128 or AES-256, optional mutual TLS, source-IP enforcement, and SIP scanner mitigation.
Privacy and data: Callivex says its published data processing agreement covers call records and personal data used in routing, and call content is not stored unless recording is enabled.
Fraud controls: Included account protections include country allowlists, spend caps, and anomaly detection; premium-rate destinations are opt-in.
Support: The network operations centre handles live faults 24 hours a day, while quotes, onboarding, and account changes are handled during UK business hours.
Trial and onboarding: The SIP trunking page says customers can request a trial trunk, and the pricing page says a test trunk is provided after contract and initial top-up.
Who it serves: Callivex describes its customers as VoIP carriers and ITSPs, CPaaS and AI voice platforms, cloud PBX operators, resellers, enterprises, small businesses, and contact centers.

Where it ranks on The Geeks Club

Best SIP Trunking Providers in 2026#8 of 30

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Sources

callivex.com/services/sip-trunking· checked 2 Oct 2026
callivex.com/pricing· checked 2 Oct 2026
callivex.com· checked 2 Oct 2026
callivex.com/services/did-numbers· checked 2 Oct 2026
callivex.com/network· checked 2 Oct 2026
callivex.com/about· checked 2 Oct 2026