Frontier SIP Trunking

5.5easy start · #27 of 30
in SIP Trunking Providers

Free to practise onnot on record
Free trialnot on record
Well documentednot on record
Runs where you worknot on record

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Frontier SIP Trunking is ranked #27 of 30 in SIP trunking providers on The Geeks Club. There is no free plan.

Compared on SIP trunking providers

Number porting: Yes

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The record

Product: Frontier SIP Trunking unifies a business voice network and is described as a cost-effective way to extend and streamline communications infrastructure.
PBX support: The service is designed to work with traditional or IP PBX systems and existing phone equipment.
Reliability: Frontier says calls can be redirected to other offices or numbers during outages.
Private network: Frontier says its private network provides call security and quality.
Scaling: Businesses can add call paths to an existing PBX more easily than with traditional PRIs and scale usage up or down.
Network delivery: Frontier SIP is delivered over a fiber Ethernet Virtual Private Line; outside its fiber footprint, it can be provisioned over Frontier internet services or another provider’s internet.
Availability commitment: Frontier advertises a 99.99% guaranteed circuit availability service level agreement for its Ethernet Virtual Private Network.
Continuity: Optional network redundancy is offered for enhanced performance across multiple business locations.
Calling plans: Frontier says calling plans include blocks of long-distance minutes and telephone numbers.
Deployment support: Frontier lists design, implementation and lifecycle management, plus 24/7/365 technical support and customer-scheduled maintenance and upgrades.
Limits: Frontier service is available only in select areas, and it says 100 Gbps internet speeds have limited availability.
Maker: Frontier’s corporate site identifies Frontier as a Verizon company and describes it as a U.S. fiber provider.
Founded: 1935
Headquarters: Dallas, Texas, United States

Where it ranks on The Geeks Club

Best SIP Trunking Providers in 2026#27 of 30

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Sources

enterprise.frontier.com/sip-trunking· checked 4 Oct 2026
newsroom.frontier.com/about-frontier/· checked 4 Oct 2026