SIP Trunking
Nextiva SIP Trunking provides PSTN connectivity for organizations that want to keep existing on-premise PBX hardware while transitioning to cloud-hosted calling services. Supports elastic capacity (scale channels up or down without physical infrastructure changes), E911 compliance, number porting, and multi-location configurations. A transition option for businesses with existing PBX investments that are not yet ready for a full UCaaS migration.
Free Advisory
Fibi sources Nextiva SIP Trunking at no cost to you. Our advisory is funded by the carrier.
Side-by-Side Comparison
We compare Nextiva against 300+ carriers so you know you're getting the best solution for your needs.
Post-Sale Support
Dedicated advisor for the life of your contract — Fibi escalates issues on your behalf so you're never dealing with carrier support alone.
More from Nextiva
Related Services
NextivaONE (UCaaS — Voice, Text, Video, Messaging)
NextivaONE is the all-in-one business communications app — combining voice calls, business SMS/text, HD video meetings, voicemail, and team messaging in a single desktop and mobile application. Employees use one app for all business communication rather than separate tools for phone, video, and chat. Includes auto-attendants, call routing, hunt groups, call recording, voicemail-to-email, and conference bridges — all managed from the Nextiva admin portal. No on-site hardware required; deploys on existing computers and mobile devices.
Nextiva Contact Center (CCaaS with NextIQ AI)
Nextiva Contact Center is the CCaaS layer — providing inbound and outbound voice, digital channels (chat, email, SMS, social), omnichannel routing, IVR, call recording, and workforce optimization. The contact center is integrated with NextivaONE so agents and non-agent employees share the same platform, directory, and admin console. NextIQ AI enhances every agent interaction with real-time assist, automated post-call summaries, and AI-powered routing — reducing handle time and improving resolution rates.
XBert — AI Employee (Always-On Receptionist)
XBert is Nextiva
NextIQ AI — Agent Assist & Conversation Intelligence
NextIQ is Nextiva