VoIP Citadel – Your Asterisk, VoIP & IP PBX Consultants

Affordable VoIP consulting, backed by real world experience and expertise, driven by a results oriented customer service experience is VoIP Citadel.

You could say we get it. We have seen the results, and in fact, routinely repair the results of VoIP gone wrong. Consisting of seasoned, well versed, veteran asterisk consultants in beautiful Scottsdale Arizona, VoIP Citadel has a proven track record established through implementation, repairs and maintenance of varying size VoIP installations. Whether it is an Enterprise Sized Call Center or a 5 seat office in New York, contact us today to see if we can help solve your VoIP problems.

You can view our current SIP trunking rates here

Latest News:

Xorcom’s Twin- Star Hot Failover Asterisk Solution

Xorcom’s XR3000 is designed and manufacturer for the enterprise grade application. Featuring the ability to support up to 1,000 users and the only commercially supported hot failover solution on the market, Xorcoms XR3000 (pictured), XR2000 & XR1000 series IP PBX’s offer hardware reliability unmatched in the VoIP arena.

Through the use of an external Astribank channel bank and USB connections interfacing with the servers, the XR Series PBX’s allow you the ability to achieve hot failover without a huge amount of additional labor or hardware.

The servers communicate with each other via a private ethernet connection and achieve hot failover by use of the Astribank. The Astribank’s can interfaces with your PSTN lines, regardless if they are Analog, PRI or even BRI. Add Trixbox or Elastix as Xorcom’s GUI of choice and you have the most reliable asterisk solution currently available. If you would like further information from a certified Xorcom reseller about their hot failover solution please contact us.

While the primary server is active, the backup server is idle:

If the primary server goes offline, the backup server immediately picks up (less than 30 seconds):


Contact Us today to see how we can implement a Custom or Xorcom High Availability Asterisk system!


VoIP Citadel

VoIP Citadel is a one-stop-shop for
IT services, specializing in VoIP.

Located in beautiful Phoenix, Arizona VoIP Citadel offers a vast array of properly priced IT innovations, convergence, management and communications solutions to the entire United States.

No Job is too big or too small.

Experienced Asterisk Consultants

VoIP Citadel's staff has real-world experience with Asterisk and open source communications platforms. We make ourselves available to you regardless of the time of day and we hold ourselves accountable to you, our customer. We understand the value of a communications platform, and will ensure you see an ROI and increased efficiencies in your organization.

If you would like to find out more, please contact us today.

Open Source PBX

Elastix, Trixbox, and PBX in a
Flash are open source unified communication platforms based on
FreePBX. Both FreePBX & its derivatives are based on current tried & true working versions of Asterisk.

Asterisk has matured enough to support everything from 5 seat PBX's to 500+ seat contact center applications. The most enticing aspect of Asterisk is the sheer amount of features available and how they encompass licensing. While more features are added with every release, licenses for items such as voicemail, extensions, and even dialers no longer exist. Open Source VoIP has truly revolutioned the PBX market. Asterisk continues to embrace legacy PBX features such as DISA, custom IVR's & ACD, while enhancing the value of your communications platform with features such as flash based CDR's, click-to-dial applications, real time monitoring, and operators managing calls from their computers with the click of a mouse.