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1947 Evans Road Cary, NC 27513 +1 (919) 443-1617
As a platinum sponsor of MSP Expo, please join us at ITEXPO 2020 at booth 801!
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We are extremely excited to announce our return to Enterprise Connect 2020! Join us at booth 1501 to form a great friendship or even partnership.
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Local Voice  -  Toll Free  -  International  -  SMS  -  e911  -  iFAX
SIP Trunks with QuestBlue
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One of the most robust APIs available on the market.  FREE!
Our  API  has  you covered
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Download it for FREE Today!
Try Our QuBe PBX Today!
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Why QuestBlue?

QuestBlue offers tiered pricing, compatible SIP endpoints, protection from fraud, and services delivered via our high availability data centers.

Free Brandable QuBe PBX

A robust PBX that you can download and install on your own hardware or host it in our cloud. You can remove our branding and replace it with your own!

Find the Right Provider!

QuestBlue allows you to have unlimited channels while giving you the power to manage your entire operation in real-time. You'll be routing calls in no time!

The API Difference

Every service we offer is part of our worldwide network! Instant provisioning of every service is available to you with the ability to scale to your requirements.

Learn How to Download 
When using your QuBe PBX with QuestBlue Systems, you can easily be up and running in minutes. From your easy-to-navigate user portal, you can order all communication services in real-time: DIDs (telephone numbers), SIP Trunks, 911 services, and you can manage refill options to keep your account going. All of this can be done without ever having to call up and ask for a new phone number. In just a couple clicks and a few seconds you will have a working phone number pointing to your PBX.

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Managed Service Providers

Grow your business without a volume commitment. Use our white label QuBe PBX and simplify your daily routine without your customers ever seeing or knowing of QuestBlue.


Easily deploy custom, high quality services across any size footprint. Adding more locations as your company grows is very simple. We will always be there to support your growth every step of the way.

Hosted Voice

Stress free hosted voice. Utilize our cloud services as you run your business and we host your servers and routing.





Only pay for what you use! Rates starting at $0.009/minute. Call volume brings greater discounts!
Local and toll free DIDs starting at $0.50/month. Volume accounts may be eligible for greater discounts! International DIDs also available for $14.95 per month.
Important parts of getting your system up and running, we offer full support of E911 and CNAM for all of our DIDs.
Our powerful API allows you to have total control over your account. Seamless integration into your system