
SIP trunking for an existing IP-enabled PBX — cloud voice without replacing the phone system. Unlimited nationwide and international calling to 40+ countries, DIDs from 50+ countries and 300+ cities, and self-service trunk management.
Fibi sources Net2Phone Net2Phone SIP Trunking at no cost to you. Our advisory is funded by the carrier.
We compare Net2Phone against 300+ carriers so you know you're getting the best solution for your needs.
Dedicated advisor for the life of your contract — Fibi escalates issues on your behalf so you're never dealing with carrier support alone.
SIP trunking is the route to cloud voice for businesses that have a working IP-PBX and no appetite to replace it. The capital is already spent; this changes what the PBX connects to, not the PBX itself.
Unlimited nationwide calling plus international calling to over 40 countries, with virtual numbers available from more than 50 countries and 300 cities — relevant for businesses that want a local presence without a local office.
Enhanced quality of service for voice, with support for both high-quality and low-bandwidth codecs (G.711 and G.729) so sites with constrained links are not forced into poor audio.
Multiple authentication methods are supported, which matters because SIP trunk fraud is a real and expensive failure mode when trunks are left loosely secured.
Trunks are created and managed directly — unconditional call forwarding from trunk to number, trunk failover to a telephone number, multiple location addresses associated with numbers, call history and exportable call detail records.
A stable platform with a 99.99% uptime record, data centres in nine countries, interconnections with over 1,000 carriers, capacity for 450,000 simultaneous calls and a fully redundant network, backed by more than 30 years of VoIP operation through IDT.
Certified and compatible with most IP-PBXs and gateways, which limits the integration risk that usually accompanies a trunk migration.
Common questions about Net2Phone SIP Trunking from Net2Phone.
More from Net2Phone
Net2Phone Unite delivers cloud business phone (UCaaS) — extensions, mobile, Huddle Video Conferencing, Contact Center Essentials for Unite — for SMB-to-mid-market organizations modernizing voice off legacy on-prem PBX or aging hosted platforms. Pairs with uContact CCaaS, AI Agent, and SIP Trunking inside the same operator portfolio.
Net2Phone uContact is the dedicated CCaaS platform for contact-center workloads — useful for organizations whose footprint includes both general voice users (handled by Unite UCaaS) and a contact-center cohort needing routing, queuing, supervisor tooling, and reporting that goes beyond Contact Center Essentials.
Net2Phone AI Agent works as a tool inside Unite or as a standalone solution — layering AI-driven assistance into voice workflows (auto-summary, routing assistance, conversational handling) without bringing in a separate AI vendor on top of UCaaS or CCaaS. Pairs with the Unite UCaaS and uContact CCaaS portfolio under the same operator.
Net2Phone Hospitality is the dedicated portfolio for hotels and multi-property hospitality operators — guest-room dialing, front-desk integration, and the hospitality-specific operating posture that general-purpose UCaaS doesn't always cover. Useful for hospitality groups consolidating voice across properties under one cloud-voice operator.