AT&T IP Flexible Reach

Web

Visit site Alternatives

Freedom report

One barScore 5.4

Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

AT&T IP Flexible Reach is ranked #9 of 30 in SIP trunking providers on Freedom251. It runs on Web.

AT&T IP Flexible Reach plans and pricing

All plans

AT&T IP Flexible Reach Pricing not listed; contact AT&T for sales information business.att.com · 9 Oct 2026

Compared on SIP trunking providers

Pricing model: hybrid
Concurrent channels: 6 channels
Emergency calling: Yes

Best AT&T IP Flexible Reach alternatives

See all 20

Two bars Callcentric SIP Trunking Free tier No. 1Free6.7 Two bars Twilio Segment Free tier No. 2$120/mo6.5 No signal Bandwidth Messaging API No. 36.4 No signal BulkVS SIP Trunking No. 4$0.01/mo6.4 One bar Telnyx Text-to-Speech API Free tier No. 5$500/mo6.4 No signal Anveo Direct No. 66.3

The record

What it does: AT&T IP Flexible Reach is a SIP trunking service for businesses using existing premises-based telephony equipment, providing inbound, outbound, local, and long-distance calling.
Voice and data: The service combines voice and data over an integrated access circuit to simplify network management and optimize capacity.
Existing equipment: Businesses can use their current voice equipment and add SIP trunking to an existing PBX.
Scalable channels: Customers can increase or decrease concurrent call channels and pay for the number of lines they need.
Microsoft Teams: The service integrates with premises-based or cloud-based Microsoft Teams PBX to connect to the public switched telephone network.
Call routing: On-net VoIP-to-VoIP calls route within AT&T’s IP network and do not incur additional charges.
Network: AT&T says calls are carried on its MPLS network rather than the public internet.
Branch offices: Branch office extensions can share trunks across multiple locations.
Virtual numbers: Virtual telephone numbers can give a phone local visibility when it is outside the location’s local calling area.
Management portal: A web-based portal provides performance reporting, call detail reporting, and e-ordering.
Network access requirement: Connecting to the AT&T network requires AT&T Dedicated Internet Service or AT&T Virtual Private Network for high-speed dedicated access.
Call rate limit: AT&T says there is no limit on the number of calls the service can originate per second.
Microsoft Teams SBC: For Teams integration, customers can use their own Microsoft Teams-certified Session Border Controller or have AT&T host and manage it.
Sales support: AT&T lists sales assistance at 877-287-5676, Monday through Friday, 7 a.m. to 7 p.m. Central Time.

Where it ranks on Freedom251

Best SIP Trunking Providers in 2026#9 of 30

Is AT&T IP Flexible Reach yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote AT&T IP Flexible Reach

Sources

business.att.com/products/sip-trunking.html· checked 9 Oct 2026