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HomeGuidesAPI ReferenceChangelogReferenceVoiceMessagingThe BasicsChangelog

Get Set Up

  • Application Quickstart
  • FreeClimb Number Quickstart

THe Basics

  • Overview
  • How FreeClimb Works
    • Using Your Free Trial Account
    • Understanding Applications
    • Understanding Number Types
    • Languages and Tools
    • FreeClimb CLI
    • Using the API
    • HTTP Response Codes
    • Resource List Pagination
    • Barge In
  • PerCL Overview
    • Terminal Commands
  • Protect Your Account
    • Securing Sensitive User Data with PCI DSS Certification and HIPAA Compliance
    • Managing Your API Key
    • Verifying Request Signatures

Messaging

  • Overview
  • Get Started
    • Node.js Messaging Quickstart
    • Java Messaging Quickstart
    • C# Messaging Quickstart
    • Python Messaging Quickstart
  • Try It Out
    • Receive a Message
    • Send an SMS During a Call
    • List Messages
    • Two-Factor Authentication Using SMS
  • Learn More
    • Sending and Receiving Messages
    • Concatenation
    • Encoding
    • Troubleshooting Deliverability
    • Non-Consumer (A2P) SMS Messaging on FreeClimb
      • A2P SMS Messaging Registration Guidelines
      • Enable Toll-Free A2P SMS
      • Enable 10DLC A2P SMS
      • 10DLC Use Cases
  • Build Your App
    • Two-Factor Authentication Using SMS
    • Error Codes
    • Reference
    • Webhooks
    • PerCL

Voice

  • Overview
  • Get Started
    • Node.js Voice Quickstart
    • Java Voice Quickstart
    • C# Voice Quickstart
    • Python Voice Quickstart
    • Ruby Voice Quickstart
    • PHP Voice Quickstart
  • Try It Out
    • Calls
      • Accept an Incoming Call
      • Add Speech Recognition
      • Collect Digits
      • List Calls
      • Make an Outbound Call
      • Make a WebRTC-Enabled Call
      • Activate Audio Stream
    • Conferences
      • Connect a Caller to Another Party
      • Create a Conference and Add Participants
      • List Conferences
      • List Conference Participants
    • Queues
      • Create a Queue
      • Dequeue a Member
      • Get a Queue
      • Get a Queue Member
      • Handle a Call Queue
      • List Queue Members
      • List Queues
      • Update a Queue
    • Recordings
      • Create a Recording
      • Delete a Recording
      • List Recordings
      • Play a Recording
      • Stream a Recording
    • Advanced Features
      • Click to Call via Web Browser
      • Pay by Phone with Voice Calling
      • Self Service Using Audio Files
      • Self Service Using Text-to-Speech
      • Self Service Using Keypad Input
      • Call Routing Using Voice Input
      • Call Routing Using Keypad Input
      • Interactive Voice Response (IVR)
  • Learn More
    • Basic Calling
    • Conferencing
    • Queues
    • Recordings
    • IVRs
    • How to Write a Grammar
    • WebRTC and FreeClimb
    • FreeClimb TTS
    • FreeClimb Audio Streaming
  • Build Your App
    • Click to Call via Web Browser
    • Pay by Phone with Voice Calling
    • Interactive Voice Response (IVR)
    • Error Codes
    • Reference
    • Webhooks
    • PerCL

Services

  • JSON Blobs
    • FreeClimb Blob Store
    • Get Started with the Blob Store

Error Codes

Error and Warning Dictionary

Updated about 1 year ago


Two-Factor Authentication Using SMS
Overview
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