Advantages of our SIP Trunking Services

Burstable Trunks

Our SIP Trunks include an enhanced "burstable" feature which temporarily allows for more trunk channels than initially provisioned. You'll be able to accommodate bursts of traffic, increasing call completion rate, and avoid busy signals for your customers. FlexFone's SIP trunking solution allows any compatible IP-PBX or even your existing old telephone equipment to use your existing broadband connection to deliver phone numbers and dial tone.

FlexFone allows you to converge all your voice and data between your office and the PSTN (public switched telephone network). SIP trunking solutions from FlexFone deliver productivity-enhancing, money-saving IP telephony features while using your existing PBX equipment.

The Primary Benefit of SIP Trunking

Traditionally, business phone systems were powered by PRIs made up of 23 channels. No more, no less. Each purchase had to include all 23 channels. SIP trunks can be purchased one at a time for scaling as demand dictates. The dramatic cost savings coupled with superb voice quality and reliability that equals or even surpasses traditional phone providers is making SIP trunks the logical choice.

What is a Business SIP Trunk?

Simply put, a SIP Trunk is a single voice call routed over your Internet connection. FlexFone uses your Internet connection to bring voice services of tomorrow to your clients today. Trunks are purchased according to the number of anticipated simultaneous calls in an enterprise. If you find you need more call capacity, you can simply add trunks as needed. FlexFone SIP Trunking is your conduit to a converged IP world.

Built-in Disaster Recovery

You'll never miss a call with our "No Fear" failover system. If your trunk is damaged, your call can automatically be redirected by FlexFone’s switch to your cell phone or alternate landline.

Call us today for a no obligation analysis!


  • I’ve partnered with Liberty since its inception and its owners prior to that.  They provide support on our phone system on an on-going basis.  

    - Robert Marchetti

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