SIP trunking connects an existing on-premises or cloud phone system to the public telephone network over IP, replacing legacy PRI circuits.
Who SIP Trunking is best for
This service is a strong fit for organizations keeping their current PBX while cutting line costs and adding flexibility. The right provider and design depend on your locations, applications and tolerance for downtime, which is where an independent comparison pays off.
What to evaluate before you buy
- Concurrent call capacity and bursting
- PBX interoperability
- Failover and disaster routing
- Number and 911 management
How Connectivity Counsel helps
We begin with your requirements rather than a product. Our advisors document your sites and goals, identify which providers can deliver SIP Trunking at your addresses, gather pricing, and present the options in a consistent format. We then support the contract, the installation and any escalation afterward. There is no charge to you for this work.
Providers we represent for SIP Trunking
84 providers in our portfolio list capabilities in this area. They include:
- 2talk
- Intrado
- Telesystem
- TouchTone Business
- ACC Business
- Access One
- AireSpring
- altafiber
- Astound Business Solutions
- AT&T
- BAI Connect (now Zentro)
- BCN
- Bluebird Fiber
- Breezeline
- Brightspeed Business
- Broadvoice
- CallTower
- CBTS
- CCI Network Services
- COEO Solutions
- Colt
- Comcast Business
- CommandLink
- Cox
- EarthLink
- EnTelegent Solutions
- Everstream
- Fidium
- FirstComm
- FirstLight
- Frontier
- Fusion Connect
- GoTo
- Granite
- GTT
- Hawaiian Telcom
- Infobip
- Intermedia
- Kinetic by Windstream
- Lightpath
- Lingo
- Logix Fiber Networks
- Metronet
- MetTel
- Momentum Telecom
- Net2Phone
- NetWolves (now COEO Solutions)
- Nextiva
Additional providers are available. See the full directory or ask an advisor.
Related voice and collaboration services
- Unified Communications as a Service (UCaaS)
- Hosted PBX and Business VoIP
- POTS Line Replacement
- Microsoft Teams Voice
- Video Conferencing and Collaboration
- Cloud Fax
- Business Messaging and CPaaS
Industries that rely on SIP Trunking
Frequently asked questions
What is SIP Trunking?
SIP trunking connects an existing on-premises or cloud phone system to the public telephone network over IP, replacing legacy PRI circuits.
How much does SIP Trunking cost?
Pricing depends on your locations, capacity or user counts, contract term and the provider. Connectivity Counsel gathers quotes from multiple providers for your exact requirements so you can compare real numbers instead of list prices.
How do I choose a provider for SIP Trunking?
Compare providers on concurrent call capacity and bursting, PBX interoperability and failover and disaster routing. An independent advisor can run that comparison for you and explain the trade-offs.
How long does it take to implement SIP Trunking?
Timelines range from a few days for cloud and wireless services to several months where network construction is required. We give you a realistic schedule for each option before you sign and track the installation afterward.
Does it cost anything to use Connectivity Counsel for SIP Trunking?
No. Connectivity Counsel does not charge clients for advisory, quoting or ordering support. Providers compensate us when you choose their service, and you pay the provider directly under the provider's own contract and pricing.
Is Connectivity Counsel tied to a single provider?
No. Connectivity Counsel is an independent advisor with a portfolio of more than 230 providers. Recommendations are based on your addresses, requirements, budget and timeline, and we show you competing options side by side.