VoIP

  • Programming Voice – Empower your APP with Incoming Call, Call Out, and P2P

  • Our SDK let’s your application to start providing Voice service

  • P2P Voice

    High Definition FREE Low Bandwidth Low Latency

  • US Domestic Calls

    Web Callback, Call Blast, Low Price

  • Inbound DID

    Global Resources , 100% Connectivity, US DID as low as 0.5 USD/month

  • Rich Voice Features

    IVR Call Queue Conference SIP Accounts

  • International Calls

    100% Coverage, 100% Caller ID, 100% Connection Rate


Features

Recording

Support mp3, wav, ogg and store recorded files to your Google Storage account


Call Queue

Unlimited Agents, Unlimited Inbound Callers and In-queue announcement


Conference

Unlimited Conference and Participants


Playback

Support High Definition Playback


IVR

Multi-level voice menu


PBX

Unlimited Extensions FREE of charge

Empowers Your APP

Get started to become an Opentact developer and start to integrate Opentact SDKs and APIs to your Mobile and Web APPs.

Got Questions?

We are always open to suggestions and comments to our Messaging, Voice, and Streaming SDKs and APIs.

Platform

100% Available

Readbone

100% Reliable

Lock

100% Secure