Office Technology
VoIP Phone Solutions for NYC & Long Island Businesses
Cloud phone systems with enterprise features that let your team work from anywhere — usually for less than your legacy phone bill.
Modern Business Phones, Without the Hardware Headaches
RDI’s cloud phone systems give your business enterprise-grade calling — auto-attendants, voicemail-to-email, call routing, and mobile apps — without on-site PBX hardware. Your team can work from the office, home, or the road on one number, and we handle setup and support locally.
RDI installs and supports business phone systems built on hosted PBX and SIP trunking with Yealink desk phones for offices across Manhattan, Nassau County, and Suffolk County. Keep your numbers, add users in minutes, and get local business phone installation and support from the same team that manages your network.
Our local team plans your number porting, configures auto-attendants and call flows to match how your business actually runs, and trains your staff before go-live. NYC and Long Island businesses reach a real technician who knows their setup — not an offshore call center.
Powered by IDT
Enterprise Calling, Backed by a Global Carrier
RDI delivers VoIP on IDT’s platform — a Tier 1 global communications provider with more than 30 years of experience, 1,800 employees, and 500,000+ customers worldwide — paired with RDI’s local setup and support.
30+
Years in business
500K+
Customers worldwide
95%
First-call resolution
24/7
U.S.-based support
Dedicated onboarding, training, and support · 22-day average complete installation · UCaaS, contact center, and AI-powered tools
What’s Included
Everything a modern business phone system should do.
Cloud Phone System
No on-site PBX to maintain — your phone system lives securely in the cloud.
Mobile & Remote Calling
Take your office line anywhere with desktop and mobile apps.
Advanced Call Features
Auto-attendants, call routing, and voicemail-to-email built in.
Keep Your Numbers
Port your existing business numbers so nothing changes for customers.
Hardware
Yealink Desk Phones, Cordless Handsets, and Conference Phones
RDI supplies and provisions Yealink IP phones, so every device arrives configured for your extensions and ready to plug in. We match the handset to the role, not the other way around.
Desk phones
Yealink T7 and T8 series color-screen IP phones for reception, executives, and open-plan desks, with built-in Wi-Fi and Bluetooth and expansion modules for front desks that manage many lines.
Cordless and mobile
Yealink W-series DECT cordless handsets for warehouses, clinics, shop floors, and anyone who is rarely at a desk, plus the mobile and desktop apps for everyone who works from more than one place.
Conference phones and headsets
Yealink CP-series conference phones for meeting rooms and boardrooms, and wireless headsets for reception, sales, and support teams who spend the day on calls.
Phones can be purchased outright or bundled into your monthly per-user cost, and many existing SIP desk phones can be re-provisioned onto the new system rather than replaced. Pair the phones with conference room displays and RDI handles the whole meeting room.
VoIP & UC
Modern Calling Features, Built In
Enterprise-grade phone features, configured and supported by a local team.
Cloud Phone System
Mobile & Desktop Apps
Auto-Attendants
Voicemail-to-Email
Smart Call Routing
Keep Your Numbers
Desk Phones & Softphones
Local Setup & Support
Microsoft Teams
Turn Microsoft Teams Into Your Phone System
Already on Teams? IDT’s native integration adds full business calling right inside the app — replacing the Microsoft calling plan with an all-inclusive feature set and Tier 1 carrier reliability.
Native Integration
Make and receive calls right inside Teams — no third-party apps and no PowerShell setup.
Unlimited Calling
Unmetered domestic plus unlimited international calling to 40+ countries, included with every seat.
All-Inclusive Features
Auto attendants, hunt groups, call queues, video, SMS/MMS, and call recording — all included.
Always-On Reliability
If Teams ever goes down, keep calling through a desk phone, web softphone, or mobile app.
Direct Routing
No PowerShell
SMS/MMS Texting
Call Recording
AI Call Summaries
CRM Integrations
Why Businesses Switch to RDI VoIP
Lower Phone Bills
Modern calling usually costs less than legacy lines.
Work Anywhere
Office, home, or on the road — one number follows you.
Easy to Scale
Add lines and users in minutes as your team grows.
Local Setup & Support
RDI configures, ports, and supports it all locally.
Onboarding & Support
A Guided Setup, Start to Finish
From your signed order to go-live, a dedicated onboarding specialist — assigned within one business day — handles number porting, configuration, installation, and training, backed by 24/7 support after launch.
1. Onboarding
2. Porting
3. Installation
4. Training
5. Customer Success
6. Technical Support
7. Billing
1 Day
Onboarding specialist assigned within one business day.
< 1 Min
Average support hold time when you call in.
~4 Hrs
Typical support ticket response and resolution.
Backed by a U.S. support team available 24/7, a dedicated account manager, Tier 3 engineers, and live training webinars.
Number Porting
Switching Without Downtime
Moving your phone numbers is the part most businesses worry about. Here is how it actually goes, and why nothing is switched off until the new system is proven.
1. Port request
We collect a recent bill from your current carrier and a signed authorization, then submit the port for every number you want to keep, including fax and toll-free lines.
2. Build and test
While the port is pending, RDI builds your auto-attendants, ring groups, and call flows, provisions the phones, and tests the whole system on temporary numbers. Your existing service keeps running the entire time.
3. Port date
Carriers typically take two to four weeks to release business numbers. On the scheduled date the numbers move to the new system, usually within minutes, and an RDI technician is on hand to confirm inbound and outbound calls.
4. Go-live and training
Staff are trained on the phones and apps the same day, call flows are adjusted to how the office actually answers, and the old carrier is cancelled only after we have confirmed everything works.
From signed order to go-live, a complete installation averages 22 days. Because the system lives in the cloud, an internet outage at the office never takes your phones down: calls fail over to the mobile app or forward to any number you choose, and voicemail and auto-attendants keep working. Pair it with managed IT and the network the phones run on is monitored by the same team.
Get a quote for a business phone system
Tell us what you need and an RDI Solutions Architect will follow up within one business day. Prefer to talk? Call (212) 244-9480 in NYC or (631) 317-2156 on Long Island.
Thank you for reaching out to the RDI Solutions Team. Your request has been received and an RDI representative will be in touch within one business day.
We respond within one business day and never share your information.
Frequently Asked Questions
What is a VoIP phone system?
VoIP (Voice over IP) runs your business phones over the internet instead of traditional lines, adding features like mobile apps, voicemail-to-email, and smart call routing, usually at a lower cost.
Can we keep our existing phone numbers?
Yes. We port your current business numbers so you keep them when you switch to VoIP.
How long does it take to port our numbers?
Business number ports typically take two to four weeks from the day the request is submitted, depending on your current carrier. Your existing service stays active the whole time, and the actual switch happens on a scheduled date, usually in minutes. From signed order to go-live, RDI’s average complete installation is 22 days.
Will VoIP work for remote and multi-location teams?
Absolutely. VoIP lets your team make and take calls from anywhere on desk phones, computers, or mobile apps, with one unified system across every location.
Do you install desk phones or is it app-based?
Both. You can use traditional desk phones, softphone apps on your computer, mobile apps, or any mix. RDI recommends the right combination for each role, provisions the devices, and pairs your phones with our managed IT services so the whole system stays supported.
What happens to our phones if the internet goes down?
Calls automatically fail over to the mobile app or forward to any number you choose, so customers still reach you. Because the system lives in the cloud rather than in your office, an outage never takes down your voicemail, auto-attendant, or your team’s ability to call from a laptop or phone on another connection.
How is VoIP priced?
Per user, per month, with unlimited domestic calling and the full feature set included rather than sold as add-ons. Desk phones can be purchased outright or bundled into the monthly cost. RDI quotes after a short review of your current lines, call volume, and locations, and most businesses end up paying less than they do today for legacy phone service.
What internet speed do we need for reliable VoIP?
Most offices already have enough bandwidth, since each call uses very little. What matters more is a stable connection with low latency, so during setup we assess your network, prioritize voice traffic, and confirm your internet can handle your call volume cleanly.
Ready to Modernize Your Phones?
Get a free quote and we’ll show what VoIP would cost — and save — for your business.