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Telnyx SIP Trunking
LinkedIn lists Telnyx headquarters at 600 Congress Avenue, Austin, Texas.
What it is
Telnyx SIP Trunking connects business phone systems to the public telephone network over the internet rather than through traditional phone lines. Telnyx says its service runs on a private global network it owns, with international service in 230+ countries and 500M+ SIP calls processed monthly. 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. To place or receive calls using a softphone, customers create a SIP connection, associate it with an outbound voice profile, and assign a Telnyx phone number. Standard SIP compatibility is listed for 3CX, FreePBX, and Asterisk; other integrations include Microsoft Teams, Zoom Phone, Talkdesk, UJET, and Genesys. US local outbound calling starts at $0.005 per minute and local inbound at $0.0032 per minute, with rates varying by destination and volume tier. Optional call recording is $0.002 per minute; emergency calling is $1.5 per month per number. Secure trunking and T.38 fax support are listed as free.
For and against
For
- International SIP trunking is available in 230+ countries.
- Supports HD voice, branded calling, and spam protection.
- Standard SIP compatibility includes 3CX, FreePBX, and Asterisk.
- 24/7 technical support is available through the Mission Control Portal.
- Secure trunking and T.38 fax support are listed as free.
Against
- US local outbound calls start at $0.005 per minute.
- US local inbound calls start at $0.0032 per minute.
- Call recording costs $0.002 per minute.
- Emergency calling costs $1.5 per month per number.
The verdict
Telnyx SIP Trunking offers internet-based phone connectivity with listed PBX and telephony integrations and calling protections. Usage rates vary by destination and volume, and optional features can add charges.
Who it suits
It suits businesses seeking internet-based phone connectivity, including organizations with global voice needs. The listed PBX compatibility and telephony integrations may suit teams connecting existing phone systems or services.
Plans and prices
Pay as you go
standard published rates · no contract · automatic volume discounts
Read 15 Oct 2026 · telnyx.com
Growth
15% discount on Voice, Messaging and Numbers · automatic volume discounts · 24/7 chat or call support
Read 15 Oct 2026 · telnyx.com
Enterprise
dedicated infrastructure and IPs · private interconnect · in-region GPUs · unlimited rate limits
Read 15 Oct 2026 · telnyx.com
Committed
Discounted rates across usage · named account manager · priority support · higher limits
Read 5 Oct 2026 · telnyx.com
On the record
- API
- Telnyx exposes REST APIs for voice, messaging, numbers, fax, identity and networking services.gartner.com · read 15 Oct 2026
- Branded calling
- Telnyx says branded calling can display a business identity on recipients' screens.telnyx.com · read 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.telnyx.com · read 5 Oct 2026
- Call setup
- Telnyx describes creating a SIP connection, assigning an outbound voice profile, and attaching a phone number before calling.telnyx.com · read 15 Oct 2026
- Company founding
- LinkedIn and Gartner list Telnyx as founded in 2009.linkedin.com · read 15 Oct 2026
- Company offices
- Crunchbase states that Telnyx has offices in Chicago, Dublin, Amsterdam, Warsaw and São Paulo.crunchbase.com · read 15 Oct 2026
- Company ownership
- LinkedIn identifies Telnyx as a privately held software-development company with 201–500 employees.linkedin.com · read 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.telnyx.com · read 5 Oct 2026
- Documentation
- The help center provides SIP configuration guides and notes that its compatibility guide is not comprehensive.support-v2.telnyx.com · read 15 Oct 2026
- Global coverage
- The SIP trunking product page states coverage in more than 230 countries.telnyx.com · read 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.telnyx.com · read 15 Oct 2026
- Inbound price
- US local inbound SIP calls start at $0.0032 per minute.telnyx.com · read 15 Oct 2026
- Integrations
- Telnyx lists Microsoft Teams, Zoom Phone, 3CX, FreePBX, Asterisk, Talkdesk, UJET and Genesys integrations or configuration paths.telnyx.com · read 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.capterra.com · read 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.capterra.com · read 15 Oct 2026
- Limit: support delays
- Trustpilot and TrustRadius reviews include complaints about slow responses, unresolved tickets and weak handling of urgent technical issues.trustpilot.com · read 15 Oct 2026
- Limit: verification and onboarding
- Independent reviews repeatedly mention slow or complicated identity verification and account approval during onboarding.capterra.com · read 15 Oct 2026
- Network
- Telnyx describes its SIP service as running on a private global network that it owns rather than rents.telnyx.com · read 5 Oct 2026
