Frontier SIP Trunking

Summary

Frontier SIP Trunking is ranked #26 of 30 in SIP trunking providers on Everything Xiaomi.

Compared on SIP trunking providers

Number porting

Yesenterprise.frontier.com

Facts

Product

Frontier SIP Trunking unifies a business voice network and is described as a cost-effective way to extend and streamline communications infrastructure.enterprise.frontier.com · 4 Oct 2026

PBX support

The service is designed to work with traditional or IP PBX systems and existing phone equipment.enterprise.frontier.com · 4 Oct 2026

Reliability

Frontier says calls can be redirected to other offices or numbers during outages.enterprise.frontier.com · 4 Oct 2026

Private network

Frontier says its private network provides call security and quality.enterprise.frontier.com · 4 Oct 2026

Scaling

Businesses can add call paths to an existing PBX more easily than with traditional PRIs and scale usage up or down.enterprise.frontier.com · 4 Oct 2026

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.enterprise.frontier.com · 4 Oct 2026

Availability commitment

Frontier advertises a 99.99% guaranteed circuit availability service level agreement for its Ethernet Virtual Private Network.enterprise.frontier.com · 4 Oct 2026

Continuity

Optional network redundancy is offered for enhanced performance across multiple business locations.enterprise.frontier.com · 4 Oct 2026

Calling plans

Frontier says calling plans include blocks of long-distance minutes and telephone numbers.enterprise.frontier.com · 4 Oct 2026

Deployment support

Frontier lists design, implementation and lifecycle management, plus 24/7/365 technical support and customer-scheduled maintenance and upgrades.enterprise.frontier.com · 4 Oct 2026

Limits

Frontier service is available only in select areas, and it says 100 Gbps internet speeds have limited availability.enterprise.frontier.com · 4 Oct 2026

Maker

Frontier’s corporate site identifies Frontier as a Verizon company and describes it as a U.S. fiber provider.newsroom.frontier.com · 4 Oct 2026

Purpose

Frontier SIP Trunking connects a business voice network and is described as a way to widen and streamline communications infrastructure.enterprise.frontier.com · 11 Oct 2026

PBX compatibility

The service is designed to work with existing traditional or IP PBX systems and phone equipment.enterprise.frontier.com · 11 Oct 2026

Call paths

Businesses can add call paths more easily than with traditional PRIs.enterprise.frontier.com · 11 Oct 2026

Call continuity

Customers can port existing phone numbers and redirect calls to other offices or numbers during outages.enterprise.frontier.com · 11 Oct 2026

Availability

Frontier says its Ethernet Virtual Private Network service has a 99.99% guaranteed circuit availability SLA.enterprise.frontier.com · 11 Oct 2026

Redundancy

Optional network redundancy is available for performance across multiple business locations.enterprise.frontier.com · 11 Oct 2026

Support

Frontier offers design, implementation and lifecycle management, plus 24/7/365 technical support.enterprise.frontier.com · 11 Oct 2026

Security

Frontier describes its private network as providing call security and says its network infrastructure secures communications.enterprise.frontier.com · 11 Oct 2026

Service limit

Frontier states that the service is available in select areas.enterprise.frontier.com · 11 Oct 2026

Network speed

The page says Frontier's fiber network offers dedicated internet speeds up to 100 Gbps, subject to limited availability.enterprise.frontier.com · 11 Oct 2026

Company

Founded

1935enterprise.frontier.com · 28 Sept 2026

Headquarters

Dallas, Texas, United Statesenterprise.frontier.com · 28 Sept 2026

Where it ranks on Everything Xiaomi

• Best SIP Trunking Providers in 2026#26 of 30

Sources

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