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Telnyx SIP Trunking

telnyx.com

From $500/mo Free plan WebiOSAndroidAPI
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Spec score 8.6 #4 of 52 in Voice APIs

What it is

Telnyx SIP Trunking connects business phone systems to phone networks over the internet, rather than a traditional phone line. Telnyx says its service runs on a private global network it owns. The product is available in 230+ countries and Telnyx reports processing 500M+ SIP calls monthly. Features include HD voice using wideband codecs such as AMR-WB, branded calling, STIR/SHAKEN A-level attestation, CNAM, spam protection and Voice Integrity reputation monitoring. To place or receive calls, customers create a SIP connection, link it to an outbound voice profile, assign a Telnyx number and use a softphone. Listed PBX compatibility includes 3CX, FreePBX and Asterisk; integrations include Microsoft Teams, Zoom Phone, Talkdesk, UJET and Genesys. The free plan has a $0 platform fee, with usage billed per minute. US local outbound rates start at $0.005 per minute and inbound at $0.0032 per minute; rates vary by destination and volume. Committed starts at $500 a month, and Enterprise at $5,000 a month.

Spec sheet

What it does
Telnyx provides carrier-operated SIP trunking for inbound and outbound PSTN calling over the internet.Read 15 Oct 2026 · telnyx.com
API
Telnyx exposes REST APIs for voice, messaging, numbers, fax, identity and networking services.Read 15 Oct 2026 · gartner.com
Integrations
Telnyx lists Microsoft Teams, Zoom Phone, 3CX, FreePBX, Asterisk, Talkdesk, UJET and Genesys integrations or configuration paths.Read 15 Oct 2026 · telnyx.com
Support
Telnyx says customers can chat with 24/7 technical support through its Mission Control Portal.Read 5 Oct 2026 · telnyx.com
Headquarters
LinkedIn lists Telnyx headquarters at 600 Congress Avenue, Austin, Texas.Read 15 Oct 2026 · linkedin.com
Branded calling
Telnyx says branded calling can display a business identity on recipients' screens.Read 15 Oct 2026 · telnyx.com
Call setup
Telnyx describes creating a SIP connection, assigning an outbound voice profile, and attaching a phone number before calling.Read 15 Oct 2026 · telnyx.com
Calling features
Features include HD voice with wideband codecs including AMR-WB, branded calling, STIR/SHAKEN A-level attestation, CNAM, spam protection, and Voice Integrity reputation monitoring.Read 5 Oct 2026 · telnyx.com
Company founding
LinkedIn and Gartner list Telnyx as founded in 2009.Read 15 Oct 2026 · linkedin.com
Company offices
Crunchbase states that Telnyx has offices in Chicago, Dublin, Amsterdam, Warsaw and São Paulo.Read 15 Oct 2026 · crunchbase.com
Company ownership
LinkedIn identifies Telnyx as a privately held software-development company with 201–500 employees.Read 15 Oct 2026 · linkedin.com
Coverage and scale
The product page states that international SIP trunking is available in 230+ countries and that Telnyx processes 500M+ SIP calls monthly.Read 5 Oct 2026 · telnyx.com
Documentation
The help center provides SIP configuration guides and notes that its compatibility guide is not comprehensive.Read 15 Oct 2026 · support-v2.telnyx.com
Global coverage
The SIP trunking product page states coverage in more than 230 countries.Read 15 Oct 2026 · telnyx.com
Inbound channels
Optional inbound channels are priced at $12 monthly for the first 10, then $11, $9 and $8 per channel in higher tiers.Read 15 Oct 2026 · telnyx.com
Inbound price
US local inbound SIP calls start at $0.0032 per minute.Read 15 Oct 2026 · telnyx.com
Limit: audio reliability
A 2026 Capterra review reported inconsistent call behavior and poor audio quality despite the platform's capabilities and price.Read 15 Oct 2026 · capterra.com
Limit: documentation and learning curve
Reviewers report that documentation can be hard to start with, tutorials are limited and some UI terminology is confusing.Read 15 Oct 2026 · capterra.com
Limit: support delays
Trustpilot and TrustRadius reviews include complaints about slow responses, unresolved tickets and weak handling of urgent technical issues.Read 15 Oct 2026 · trustpilot.com
Limit: verification and onboarding
Independent reviews repeatedly mention slow or complicated identity verification and account approval during onboarding.Read 15 Oct 2026 · capterra.com
Network
Telnyx describes its SIP service as running on a private global network that it owns rather than rents.Read 5 Oct 2026 · telnyx.com
Network scale
Telnyx says its network processes more than 500 million SIP calls monthly.Read 15 Oct 2026 · telnyx.com
Notable security news
TechRadar reported on March 30, 2026 that malicious Telnyx Python package versions were published in a supply-chain attack.Read 15 Oct 2026 · techradar.com
Optional charges
Optional pricing includes call recording at $0.002 per minute and emergency calling at $1.5 per month per number; secure trunking and T.38 fax support are listed as free.Read 5 Oct 2026 · telnyx.com
Optional features
The rate card lists call recording at $0.002 per minute, secure trunking and T.38 fax as free, and emergency calling at $1.50 per number monthly.Read 15 Oct 2026 · telnyx.com
Outbound price
US local outbound SIP calls start at $0.005 per minute.Read 15 Oct 2026 · telnyx.com
PBX compatibility
Telnyx lists standard SIP compatibility with 3CX, FreePBX, and Asterisk, with IP or credential authentication and configuration guides.Read 5 Oct 2026 · telnyx.com
Platform fee
The SIP pricing page lists a $0 platform fee and pay-as-you-go billing.Read 15 Oct 2026 · telnyx.com
Praise: APIs and tools
Reviewers commonly praise straightforward APIs, developer documentation, portal usability and SIP debugging tools.Read 15 Oct 2026 · trustradius.com
Praise: pricing and value
Capterra and TrustRadius reviewers repeatedly praise competitive pricing, savings versus larger providers and clear cost control.Read 15 Oct 2026 · capterra.com
Praise: support
Reviewers on Capterra, Software Advice and Trustpilot often describe support as knowledgeable, friendly or responsive.Read 15 Oct 2026 · trustpilot.com
Pricing basis
The pricing page lists US local outbound calling from $0.005 per minute and local inbound calling from $0.0032 per minute, with rates varying by destination and volume tier.Read 5 Oct 2026 · telnyx.com
Rating on Capterra
4.7 out of 5 from 196 reviews.Read 15 Oct 2026 · capterra.com
Rating on G2
4.7 out of 5 from 605 reviews.Read 15 Oct 2026 · g2.com
Rating on Gartner Peer Insights
5.0 out of 5 from 1 review.Read 15 Oct 2026 · gartner.com
Rating on Google Play
No ratings yet from 0 reviews for Telnyx WebRTC; the app had about 7.5 thousand installs.Read 15 Oct 2026 · appbrain.com
Rating on Software Advice
4.7 out of 5 from 196 reviews.Read 15 Oct 2026 · softwareadvice.com
Rating on Trustpilot
3.3 out of 5 from 651 reviews.Read 15 Oct 2026 · trustpilot.com
Rating on TrustRadius
5 out of 10 from 8 reviews.Read 15 Oct 2026 · trustradius.com
SDK licence
Telnyx's public WebRTC SDK repository is MIT licensed and includes browser and React packages.Read 15 Oct 2026 · github.com
Security and compliance
The SIP product page describes encrypted, monitored, auditable interactions and displays ISO 27001, GDPR, AICPA SOC, and PCI markers.Read 5 Oct 2026 · telnyx.com
Security certifications
Telnyx lists ISO 27001, SOC 2 Type II, ISO 27701, PCI DSS and GDPR compliance or certification.Read 15 Oct 2026 · telnyx.com
Setup
Customers can create a SIP connection, associate it with an outbound voice profile, assign a Telnyx phone number, and place or receive calls using a softphone.Read 5 Oct 2026 · telnyx.com
Softphone requirement
Telnyx does not supply a softphone or PBX, so customers must connect a compatible third-party system.Read 15 Oct 2026 · support-v2.telnyx.com
Status transparency
Telnyx operates a public status page showing component health and scheduled maintenance.Read 15 Oct 2026 · status.telnyx.com
Teams integration
The Teams Direct Routing guide uses a Telnyx SBC, SIP connection, assigned number, voice routes and routing policies.Read 15 Oct 2026 · support.telnyx.com
Telephony integrations
Telnyx lists Microsoft Teams Direct Routing and Operator Connect, Zoom Phone BYOC, and carrier integrations for Talkdesk, UJET, and Genesys.Read 5 Oct 2026 · telnyx.com
Voice quality
The product page advertises HD voice and wideband codecs including AMR-WB.Read 15 Oct 2026 · telnyx.com
Who it serves
Telnyx presents the service for businesses that need global voice calling and PSTN connectivity, including enterprise use cases.Read 5 Oct 2026 · telnyx.com

Plans and prices

Pay as you go Free $0 monthly minimum; usage billed per minute standard published rates · no contract · automatic volume discounts Read 15 Oct 2026 · telnyx.com
Committed $500 a month From $500/ mo Discounted rates across usage · named account manager · priority support · higher limits Read 5 Oct 2026 · telnyx.com
Growth $2,000 a month $2,000 monthly minimum spend 15% discount on Voice, Messaging and Numbers · automatic volume discounts · 24/7 chat or call support Read 15 Oct 2026 · telnyx.com
Enterprise $5,000 a month $5,000 monthly minimum spend dedicated infrastructure and IPs · private interconnect · in-region GPUs · unlimited rate limits Read 15 Oct 2026 · telnyx.com

Every Telnyx SIP Trunking plan and price →

Strong points and limits

Strong points

  • International service in 230+ countries
  • Compatible with 3CX, FreePBX and Asterisk
  • Secure trunking and T.38 fax support are free
  • 24/7 technical support through Mission Control Portal

Limits

  • Usage is billed per minute on the free plan
  • Local call rates vary by destination and volume
  • Committed starts at $500 a month
  • Emergency calling costs $1.5 per month per number

Who it suits

It suits businesses needing global voice calling and PSTN connectivity, including enterprises. Teams using supported PBX systems or listed telephony integrations may also find the compatibility options relevant.

Verdict

Telnyx specifies setup, integrations, calling features and usage-based rates for its SIP service. The free platform fee does not make calls free, and higher-tier plans start at $500 a month.

Where Specifiction places it

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