Steadfast Telecommunications – The VoIP Service New York Trusts.

We have been providing some of the best telephone systems and VoIP New York has to offer since 1976. We are proud to install phone systems New York businesses can truly count on for increased efficiency, cutting–edge technology, and overall cost–efficient telecom solutions.

Sales & Installation


Technology includes analog, digital, VoIP and SIP
Simple Equipment Management


Not sure if we can service your system?
Find out what systems we can service

Save Money with VoIP


One low monthly bill ensures that your line and equipment are running smoothly

What Do Our Customers Think?

The customer service at Steadfast is always very prompt. I can rely on them to handle any inquiries or orders that come up.
5 Phone Rating
5 Phone Rating
I have worked with Steadfast now for several years and find the experience to be a pleasure. Steadfast is not only provided us a good service but also saved us money on telecom cost. We have migrated 3 regional offices telephone system to Steadfast and continue to migrate our remaining offices in near future.
5 Phone Rating
5 Phone Rating
Ho, IT Manager
I can not express in words how satisfied I am with Steadfast Telecommunications. It has been such a pleasure to work with them. They do a fantastic job and they treat you like family.
5 Phone Rating
5 Phone Rating
Mark Lorber, DDS,
With the help of Steadfast Telecommunication’s expertise we were able to network our numerous locations, allowing us to process calls between locations more effectively.
5 Phone Rating
5 Phone Rating
Steadfast has been great. Very responsive following up. Truly concerned about the outcome of any issues and making sure issues that pop up from time to time are rectified. One time, they showed up at 7am to rectify a last minute situation. I don’t know of other companies who would do that.
5 Phone Rating
5 Phone Rating
Joe Dnistrian, Managing Director, New York State Operations
The customer service is excellent. They’ve been responsive, so I’ve been very happy with that. In business there always can be questions of something not working; especially when you start up. If we had a question, the call back was very quick –certainly within the hour, or within a half an hour. I have nothing to complain about there. I’m very satisfied.
5 Phone Rating
5 Phone Rating
Howard Yudin, MD, Family Practice Purchase - New York
As one of the best restaurants in New York City, the ability to receive phone reservations is critical to our overall business. Steadfast Telecommunications understands our need for being responsive. This urgency has afforded us the reputation of handling customer requests in a timely and orderly manner at our restaurant.
5 Phone Rating
5 Phone Rating
Yuka, Director of Operations
Any problem, Steadfast would zip up there. Recently, during a snowstorm, they installed a device into the router in my house to receive calls from work. I sat in my house, I had my phone and people didn’t know the difference. It was great. Steadfast has great customer service!
5 Phone Rating
5 Phone Rating
Dr. Stern
Great System. Priced Right. Easy to Operate. Terrific Support.
5 Phone Rating
5 Phone Rating
D. Donato
Read More Reviews


Simplified. Streamlined. Secure.

Providing top–notch business phone systems NYC companies have been trusting for more than thirty years means going above and beyond the status quo. We provide a hosted PBX New York businesses can rely on for a better experience, without having to pay for all the expensive extra hardware.
Our VoIP systems come with all of the standard productivity features which can promote streamlined practices, save you time, increase your efficiency, and keep your costs down.



One particularly notable VoIP feature is the ability to have a number that’s localized to almost anywhere in the country, and even many locations abroad. Now your international clients can reach you without having to pay international rates. You can even get an intelligent scheduling system for simple and complex call scheduling. The system can screen with a “Do Not Call” list to automatically block calls from telemarketers, or any other phone–pests you don’t want to waste your time with.


By utilizing our smart fax and voicemail conversion solutions, which run on our unified messaging platform, you’ll be going green by saving paper and ink. No longer will you have to manage multiple inboxes—listen to voicemails right from your computer, faster than you can catch a cab outside Grand Central.


Our streamlined practices will help save you time, increase your efficiency, and keep your costs down. Installation is simplified with flexible cabling options, which get you up and running across all of your systems in no time. Sick of worrying about what happens when you lose power or your connection? With redundancy options, you’ll never miss out on a call, because even if your VoIP connection is lost, the call can be set to transfer to an employee’s cell phone. Additionally, by utilizing our unified functionality, your remote worker’s phones will be able to operate as if they are right in the office with you!

With the services we provide at Steadfast Telecom, we go above and beyond the other VoIP service providers New York has had to deal with. We provide you with superior service, and at a lower cost. We work hands on with our clients to make sure that they are getting the exact service that works best for their business. Whether it’s a hosted PBX NYC businesses can afford, or simply providing the streamlined business phone systems New York deserves,

Steadfast is here for you.



NYC Skyline - Phone Systems NYC Can Trust

Phone Systems New York Businesses Can Trust

In an age where we practically cannot exist without the internet, VoIP technology has never before been a more necessary part of effective commerce practices. We pride ourselves on being more than just another VoIP NYC company looking to amass our client base. We work one on one with each of our clients to make sure that they get the service they’ve come to trust, and at a price they can get excited about. Our advantages include:


Experienced Telecom Partners

For VoIP service providers New York companies will be truly benefit from, trust the guys who have been doing it for more than thirty years: Steadfast Telecommunications. Call and speak to one of our friendly representatives for a free quote, and see how we can revolutionize your phone systems today.