VoIP Number
CtrlK
  • 🎉 Getting started
    • Innovative cloud telephony for your business
  • 🔩Components
    • Connection
    • Trunk
    • AI Agent
    • Number
    • Call Flow
  • 🧙‍♂️Features
    • Real time speech translation
    • AI Agent
    • Media routing
    • Audio codecs setup / negotiation
    • Elastic SIP trunking
    • HD voice
    • Voicemail with audio transcription
    • Call Flow Builder
    • Email notifications
    • Storage
  • 💡How to
    • Translate speech in a real time
    • AI Agent with Groq LLM
    • Whispering AI Agent
    • Voicemail Trunk
    • Translate speech in a real time back to the caller
    • Inbound calls from PSTN/mobile to your SIP
    • Making outbound calls to PSTN/mobile
    • Echo 🔊
    • Play text announcement
    • Play audio announcement
    • IVR with user input, bridge and voicemail
    • Voicemail box
    • Calling to voicemail and listening/managing your messages
  • 🐶knowledge
    • Languages supported by real time speech translation 🗣️
  • Signalling
  • Media
  • Codecs
  • Pricing
  • 👩‍🎤Reporting
    • SMS/MMS
    • Calls
    • Billing
  • 🦮Guides
    • Register a Softphone (SIP phone)
    • Register IP desk phone
    • Changing Plan (membership)
    • Removing your account
  • 📖API Reference
    • SMS/MMS
  • 📽️Videos
    • Basics
    • AI Agents
    • Real time speech translation
    • Audio call with real time speech translation
    • Real time speech translation with 841 ms latency
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Codecs

Codecs

Codec
ℹ️ Description

PCMA

G711 A law codec with 8 kHz sampling rate

PCMU

G711 U law codec with 8 kHz sampling rate

G722

HD codec with 16 kHz sampling rate

OPUS

Full band codec with variable bitrate at 48 kHz sampling rate

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Last updated 1 month ago