TELNYX API INTEGRATION & MIGRATION

Integrate Telnyx, or migrate to it and cut the bill

Telnyx owns its carrier network, so voice and messaging run at roughly half Twilio's list rates with lower latency. We integrate Telnyx into your product, and when you are on Twilio paying too much, we migrate you (TeXML keeps your call flows, FastPort moves your numbers) with no downtime. First plan in 1-2 weeks, from $3K. 20 years of telephony behind it.

Voice + MessagingSIP TrunkingInference / Voice AITwilio migration250+ projects since 2005
$0.002/min
Telnyx outbound voice on its owned network (Twilio lists about $0.014)
TeXML
TwiML-compatible, so most Twilio call flows run on Telnyx with minimal rewrite
20+ yrs
telephony and VoIP since 2005
250+
projects shipped
WHO THIS IS FOR

Built for teams on Telnyx, or overpaying on Twilio

Whether you are integrating Telnyx for the first time, scaling voice and messaging already on it, or watching a Twilio bill climb past what the feature is worth, we have shipped telephony both ways: building on Telnyx and migrating teams onto it.

Programmable voiceSMS & 10DLCWhatsAppSIP trunkingNumber porting2FA / VerifyIVR & call routingVoice AI / InferenceTwilio migrationTelephony cost-optimization
OPTIONS

Stay on Twilio, hand-roll Telnyx, or bring in a specialist

Twilio is easy to start and bills every minute and message at list rates. Telnyx runs the same channels on a network it owns, for roughly half, but the migration and the edge cases are real. A specialist has shipped Telnyx in production and ports you without downtime.

Stay on TwilioHand-rolled TelnyxTelnyx specialist (Fora)
Voice & message costTwilio list ratesLower, if configured rightAbout half, on Telnyx's owned network
Migration pathYou stay and overpayRisky, hand-rolledTeXML flow mapping + FastPort porting, no downtime
Time to productiveAlready live, overpayingRamp-up on your dimeProductive in week 1
Telephony depthPlatform defaultLearn as you go20 years of VoIP and SIP
ComplianceYour responsibilityVariesHIPAA, 10DLC, STIR/SHAKEN done before
When you growBill compoundsLock-inYou own the integration and the numbers

On Twilio and the bill is climbing? We model the Telnyx saving and migrate you with TeXML and FastPort. Starting fresh? We integrate Telnyx right, with compliance and deliverability from day one. Want the Twilio comparison? See Twilio development.

HOW WE BUILD

From your product to the carrier, on Telnyx

A telephony build is more than an API key: it is channels, compliance, deliverability, and a cost model. Here is the architecture we build, whether you integrate Telnyx fresh or migrate from Twilio.

On Twilio todayTwiML flows, your numbersTeXML + FastPortYour productweb / iOS / AndroidTelnyx APIsVoice, Messaging, SIP,Verify, Inferenceowned carrier networkCarriers / PSTNglobal numbersCallers/ recipients
Figure 1: TeXML runs your TwiML flows on Telnyx; FastPort moves your numbers with no downtime.
1

Scope & cost model

Which Telnyx products and channels, expected volumes and regions, and the projected bill. For migrations, we model your Twilio spend against Telnyx and map the TeXML and porting work.

week 1-2
2

Integrate or map

Wire Telnyx Voice, Messaging, SIP, and Verify into your app, or map existing Twilio TwiML to TeXML so your call flows run on Telnyx with minimal rewrite.

3

Build the comms flows

IVR and call routing, notifications, 2FA, WhatsApp, click-to-call, and SIP trunking, the flows your product needs.

4

Migrate without downtime

Port numbers with FastPort, dual-run on both providers, cut traffic over in phases, and keep a rollback path at every step.

5

Scale, optimize & own

Multi-region, observability, per-minute and per-message cost-optimization, and your team owning the integration and the numbers.

The result delivers the same calls and messages, at a cost you control, on infrastructure you own.

THE STACK

What we build on Telnyx

Layer
What we build
Voice
Programmable Voice API, Elastic SIP Trunking, call control, IVR, routing, recording, conferencing
Messaging
SMS/MMS, 10DLC, WhatsApp Business, two-way messaging, notifications
Numbers & SIP
Global numbers, FastPort number porting, Elastic SIP Trunking to your PBX or platform
Verify
2FA / OTP, Number Lookup for number intelligence
Voice AI / Inference
Telnyx Inference (co-located LLM), Voice AI agents bundling STT, TTS, and LLM at a sub-1s loop (full call-agent builds: see our AI call agent page)
Migration
TeXML (TwiML-compatible) flow mapping, FastPort porting, dual-run cutover
Compliance
HIPAA patterns, 10DLC registration, STIR/SHAKEN, opt-in/consent
Clients
Web, iOS, Android, and your backend (Node, Python, Go, and more)
USE CASES

Telnyx we have shipped

MIGRATION

Twilio to Telnyx migration

Move voice and messaging off Twilio to Telnyx with TeXML and FastPort, cutting the per-minute and per-message bill, with no downtime.

VOICE

Programmable voice

Click-to-call, IVR, call routing, recording, and conferencing on the Telnyx Voice API and Elastic SIP Trunking.

MESSAGING

Messaging & 10DLC

SMS/MMS, WhatsApp, and notifications, with 10DLC registration and deliverability tuned so messages land.

SIP TRUNKING

SIP trunking at scale

Connect your PBX or platform to Telnyx Elastic SIP Trunking, with global numbers and porting.

VOICE AI

Voice AI on Telnyx

Real-time voice agents on Telnyx Inference, where the co-located LLM keeps the voice loop under a second. Full call-agent builds pair with our AI call agent work.

COST

Telephony cost-optimization

Cut a climbing telephony bill with routing, channel, and config tuning on Telnyx's owned network.

STAY VS MIGRATE

Stay on Twilio, or own it on Telnyx

Twilio is the easy default and the expensive one. The question is whether the per-minute and per-message bill still makes sense, and who owns the telephony layer. Here is the split.

Control & cost-ownershiplowhighTelephony depthlowhighTwilio as-iseasy default, list rates, less controlGeneralist agencylearns on the jobForaTelnyx, owned network, you own it
Figure 2: Value axes, not scale. Owning it on Telnyx wins on control and cost at any size, not just at high volume.
STAY ON TWILIO
You are validating and the volume is low enough that the bill does not hurt
You have one or two simple flows and no time to migrate
You do not want to touch your telephony provider yet
BRING IN A SPECIALIST
You want Telnyx integrated right the first time, with compliance and deliverability handled
A Twilio bill is climbing and you want the owned-network saving
You need numbers ported and flows migrated with no downtime
You want to own the integration and the numbers, not rent the platform
At any size, a clean integration or a planned migration pays off from your first thousand minutes.

Right when telephony is core to how you reach customers: a first plan in 1-2 weeks.

HOW WE WORK

Four ways to bring us in

PRICING

Starting points, not size caps

Fixed-scope starting points, whether you are integrating Telnyx or planning the move from Twilio. Each is a floor you build up from.

COST AUDIT & MIGRATION PLAN
from $3K
about 1-2 weeks
  • Twilio or telephony usage and bill review
  • Modeled Telnyx saving and migration plan
  • TeXML mapping and porting plan
  • Or an integration plan if you start fresh
Start with a plan
Most teams start here
BUILD OR MIGRATION
from $8K
about 2-4 weeks
  • Integrate Telnyx into your product
  • Or migrate from Twilio to Telnyx
  • Production-ready and deployed
  • You own the code and the numbers
Scope a build
SCALE & MULTI-REGION
from $16K
about 3+ weeks
  • High volume, multi-region
  • SIP trunking at scale
  • Voice AI on Telnyx Inference
  • Ongoing cost-optimization
Plan for scale

Telnyx usage (per-minute, per-message) is billed by Telnyx at their rates, no markup from us. We forecast it, and where a migration cuts it, we show you the math first.

FREE FOR QUALIFIED PROJECTS

Three ways to de-risk before you commit

Before any build or migration, we will check your setup or model the move.

WHY FORA SOFT

Telephony is in the core of the business

We have built voice and messaging for 20 years, on Telnyx and across the CPaaS and SIP world, so our advice on staying versus migrating is grounded in what we have shipped.

Since 2005, 250+ projects

Two decades of voice, messaging, VoIP, and SIP.

Telnyx in production

Voice, Messaging, SIP trunking, and number porting, shipped and running.

Cost modeled up front

We forecast the per-minute and per-message bill and show the Telnyx saving before you commit.

Migration without downtime

TeXML flow mapping, FastPort porting, dual-run cutover, with a rollback path.

Compliance shipped

HIPAA patterns, 10DLC, STIR/SHAKEN, and opt-in/consent, done before, not learned on your project.

You own it

Your code, your Telnyx account, your numbers. No lock-in to us.

FAQ

Telnyx, answered

What is Telnyx development?

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Which Telnyx products do you work with?

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Should I migrate from Twilio to Telnyx?

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How much cheaper is Telnyx than Twilio?

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How does a Twilio-to-Telnyx migration work?

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Can you port our phone numbers?

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Can you build voice AI on Telnyx?

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Is Telnyx HIPAA and 10DLC compliant?

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Telnyx or Twilio, which should we use?

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What does it cost and how long does it take?

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FURTHER READING

Go deeper on telephony

On Twilio, or building telephony from scratch?

Tell us your channels, voice, SMS, WhatsApp, SIP, and what you run today. We will model the Telnyx saving, map the migration, and give you a plan and a number in one call.

Specialist software house for video, real-time and AI products. Founded 2005. 50 in-house engineers.

+1 (914) 775-5855
New York · USA
© Fora Soft, 2005–2026
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