Telnyx SIP Trunking
Telnyx SIP Trunking connects business phone systems to the public telephone network through the internet.
What Telnyx SIP Trunking is
Telnyx SIP Trunking connects business phone systems to the public telephone network through the internet. Telnyx says the service runs on a private global network it owns, with service available in 230+ countries and 500M+ SIP calls processed monthly. Calling features include HD voice with wideband codecs such as AMR-WB, branded calling, STIR/SHAKEN A-level attestation, CNAM, spam protection and Voice Integrity reputation monitoring. Customers can create a SIP connection, associate it with an outbound voice profile, assign a Telnyx number, then place or receive calls using a softphone. Standard SIP compatibility includes 3CX, FreePBX and Asterisk; listed integrations include Microsoft Teams, Zoom Phone, Talkdesk, UJET and Genesys. Optional call recording is $0.002 per minute, and emergency calling is $1.5 per month per number. Secure trunking and T.38 fax support are listed as free.
Good
- International SIP service in 230+ countries
- HD voice and caller reputation features
- Compatible with 3CX, FreePBX and Asterisk
- 24/7 technical support by chat
Watch out
- Calling rates vary by destination and volume tier
- Call recording and emergency calling cost extra
Who it suits
It suits businesses that need global voice calling and PSTN connectivity, including enterprise users. Teams using 3CX, FreePBX, Asterisk, Microsoft Teams or Zoom Phone may find its listed compatibility relevant.
Verdict
Telnyx SIP Trunking combines global reach, SIP/PBX compatibility and several calling controls. Usage-based calling has listed per-minute rates, while some features carry additional charges.
Plans and prices
From Telnyx SIP Trunking's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Pay as you go | Free | standard published rates · no contract · automatic volume discounts · $0 monthly minimum; usage billed per minute |
| Committed | $500 a month | Discounted rates across usage · named account manager · priority support · higher limits · From $500/ mo |
| Growth | $2,000 a month | 15% discount on Voice, Messaging and Numbers · automatic volume discounts · 24/7 chat or call support · $2,000 monthly minimum spend |
| Enterprise | $5,000 a month | dedicated infrastructure and IPs · private interconnect · in-region GPUs · unlimited rate limits · $5,000 monthly minimum spend |
The facts
Each one read from Telnyx SIP Trunking's own pages, with the date it was checked.
What it does
- API
- Telnyx exposes REST APIs for voice, messaging, numbers, fax, identity and networking services.checked 15 Oct 2026
- Branded calling
- Telnyx says branded calling can display a business identity on recipients' screens.checked 15 Oct 2026
- 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.checked 5 Oct 2026
- Call setup
- Telnyx describes creating a SIP connection, assigning an outbound voice profile, and attaching a phone number before calling.checked 15 Oct 2026
- Coverage and scale
- The product page states that international SIP trunking is available in 230+ countries and that Telnyx processes 500M+ SIP calls monthly.checked 5 Oct 2026
- Documentation
- The help center provides SIP configuration guides and notes that its compatibility guide is not comprehensive.checked 15 Oct 2026
- Global coverage
- The SIP trunking product page states coverage in more than 230 countries.checked 15 Oct 2026
- Inbound channels
- Optional inbound channels are priced at $12 monthly for the first 10, then $11, $9 and $8 per channel in higher tiers.checked 15 Oct 2026
- Integrations
- Telnyx lists Microsoft Teams, Zoom Phone, 3CX, FreePBX, Asterisk, Talkdesk, UJET and Genesys integrations or configuration paths.checked 15 Oct 2026
- Limit: audio reliability
- A 2026 Capterra review reported inconsistent call behavior and poor audio quality despite the platform's capabilities and price.checked 15 Oct 2026
- Limit: documentation and learning curve
- Reviewers report that documentation can be hard to start with, tutorials are limited and some UI terminology is confusing.checked 15 Oct 2026
- Limit: support delays
- Trustpilot and TrustRadius reviews include complaints about slow responses, unresolved tickets and weak handling of urgent technical issues.checked 15 Oct 2026
- Limit: verification and onboarding
- Independent reviews repeatedly mention slow or complicated identity verification and account approval during onboarding.checked 15 Oct 2026
- Network
- Telnyx describes its SIP service as running on a private global network that it owns rather than rents.checked 5 Oct 2026
- Network scale
- Telnyx says its network processes more than 500 million SIP calls monthly.checked 15 Oct 2026
- Notable security news
- TechRadar reported on March 30, 2026 that malicious Telnyx Python package versions were published in a supply-chain attack.checked 15 Oct 2026
- 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.checked 5 Oct 2026
- 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.checked 15 Oct 2026
The company
- Company founding
- LinkedIn and Gartner list Telnyx as founded in 2009.checked 15 Oct 2026
- Company offices
- Crunchbase states that Telnyx has offices in Chicago, Dublin, Amsterdam, Warsaw and São Paulo.checked 15 Oct 2026
- Company ownership
- LinkedIn identifies Telnyx as a privately held software-development company with 201–500 employees.checked 15 Oct 2026
- Headquarters
- LinkedIn lists Telnyx headquarters at 600 Congress Avenue, Austin, Texas.checked 15 Oct 2026
Money
- Inbound price
- US local inbound SIP calls start at $0.0032 per minute.checked 15 Oct 2026
- Outbound price
- US local outbound SIP calls start at $0.005 per minute.checked 15 Oct 2026
Alternatives to Telnyx SIP Trunking
- 1
Callr
AndroidiOSWebAPI7.6From €599 a month - 2
D7 Networks
Free planWebAPI7.5$0.01 one-time - 3
Wazo Platform
Free planAndroidiOSWebAPI7.5Free plan - 4
46elks
Free planWebAPI7.0From €3 a month - 5
Amazon Chime SDK PSTN Audio
Free planAndroidiOSWebAPI6.9Free plan - 6
Infobip Voice API
Free planAndroidiOSWebAPI6.9Free plan