Limited-time promo

Replace legacy phone lines with reliable SIP trunks from 1Stop VoIP.

Keep your existing PBX or IP phone system and move your voice service to the cloud. Get predictable pricing, unlimited incoming calls, and local USVI support that understands your business.

Connect to your existing PBX or IP phone system
Keep your current business numbers
Unlimited incoming calls on every trunk
Local USVI team for cutover & support

Get a SIP trunk quote → Schedule a quick consult

No obligation. We’ll review your current bill and trunk usage, then recommend the right number of lines and calling plan for your site or multi-site deployment.

SIP trunking for business phone systems

Modern VoIP connectivity for your existing PBX or IP phone system — without changing how your staff uses the phones.

Keep your existing phone system

Works with IP PBX • Legacy PBX with gateway

Move from PRI or analog lines to SIP trunks while keeping the phone system your team already knows. We work with your IT or PBX vendor on the cutover.

Compatible with most IP PBXs and SIP-capable systems
Options for SIP gateways to support older PBXs
Keep existing extensions, ring groups, and call flows

Local routing & reliability

USVI numbers • Failover options • QoS friendly

Your trunks are engineered for island conditions, with options for call rerouting if your site or internet goes down.

Local and toll-free numbers for USVI and U.S. markets
Optional call forwarding during outages or holidays
Designed to work with managed internet & QoS

Control over capacity & cost

Unlimited incoming • Flexible outbound plans

Start with the number of trunks you need today, then scale up as call volume grows — without overbuying channels.

Unlimited incoming calls on every trunk (fair-use policy)
Outbound calling with per-minute or bundled options
Visibility into trunk usage and growth over time

Simple SIP trunk pricing with room to grow

Your quote is tailored to your location, number of trunks, and existing internet connection. Below is a common starting configuration for a small office moving from traditional lines to SIP.

Example: 2-Line SIP Trunk Package

Ideal for small offices, professional services, and locations moving from 2–4 analog lines or a small PRI.

2 SIP trunk lines from $99.40/month
Unlimited incoming calls
Outbound domestic calling: per-minute or bundled options
Port existing or add new local/toll-free numbers
SIP configuration & testing included at turn-up
No long-term contract

Let’s design the right SIP trunk package for your business

Answer a few quick questions and we’ll follow up with a custom SIP trunk proposal for your office, call-heavy team, or multi-site environment — no pressure, no obligation.

Quick SIP Trunk Quote Request

Typical form time: under 2 minutes

Important service information

911 & emergency calling: VoIP and SIP trunk 911 service works differently than traditional landline 911. Service depends on power, network equipment, and your internet connection. During a power outage, internet outage, or equipment failure, you may not be able to place 911 calls.
Power & internet dependency: SIP trunk service requires a working broadband connection and powered equipment such as routers, switches, PBX, and gateways. Battery backup or generator solutions are recommended for critical sites.
Taxes, surcharges & regulatory fees: Advertised rates do not include applicable taxes, telecom surcharges, government assessments, or regulatory fees including E911 and USF.
Fair-use policy: Unlimited and unlimited incoming calling is intended for typical business voice usage. High-volume auto-dialers, call centers, resale, continuous, or excessive traffic may be restricted or billed differently.
Service availability: Service, pricing, and features are subject to qualification, network availability, and service agreement terms.