Blog > Telnyx Call Control

What is Call Control:
Call Control is a programmable voice API. For example, a user calls a contact center for a call center; they present a recorded menu that instructs users that press one to speak to sales free support or press two for agent support. If you press two for agent support, it will automatically transfer that information to the required company and understand where to direct your call to base on that input. Telnyx goes beyond that by using a Call Control API.
Telnyx Call Control:
Many companies using embedded voice calling to make collaboration easy, but building and maintaining a voice application from scratch is complicated. It distracts developers from working on the core components for their solutions; that’s why developers turn to Telnyx rather than others. Telnyx Call Control API allows incorporating voice workflows within their applications quickly. Their programmatic Call Control allows developers the building blocks to create customizable caller experiences.
A simple set of Call Control API commands controls the Telnyx communication engine, which returns webhook notifications to users’ systems. For example, you can build branching interactive voice response workflows from a single command.
When the user system sends a command, the Telnyx system begins monitoring for dial-tone responses. Each response will forward to the user system as a webhook notification. The logic for administering the call is built into the application using Telnyx commands; they make the workflow responsive and sophisticated according to user requirements.
How Telnyx Call Control Different:
Telnyx Call Control provides its users total control over the call via API, whether you’re transferring, forking media for real-time audio processing, conferencing in several users, or enabling/disabling recording on the fly. Call Control allows you to embed customized communications workflows into your application.
Telnyx providing advance features such as:
- Answering Machine Detection
- Call Conferencing
- Media Forking
The above features show how data packets are transferring across the network and granular into the call flow. All the features mentioned above can use by Telnyx out-off –the-box call control API.
API and Call Flow Control
Telnyx is one of the largest interconnected VoIP carriers companies in the country. Its call control system design makes it easier to embed voice capabilities and add advanced features like conferencing, call recording, and text-to-speech into the software application with a lot more to come. Telnyx Call Control system brings advanced functionalities.
In addition, the advantage of leveraging the Call Control API is that application developers don’t need Telecom’s domain expertise to build great voice applications. It can be used to develop call center applications, call tracking apps, voice dialers, or even work for the staff.

Telnyx Programmatic Call Control Commands
Moreover, Call Control API offers the developer a handful of commands for some actions like answering an incoming call, dial a new call, or bridge an existing call; there is a webhook associated with each of these commands.

Building IVR with Call Control
Call center applications, call tracking apps, voice dialers, or workforce apps with embedded collaboration can leverage a Call Control API to build highly customizable caller experiences.
Indeed, a developer could build a widespread application, which is called an interactive voice response system. Telnyx providing different Call Control solutions and commands. Moreover, Telnyx Telephony which a new infrastructure that defines network interface, network backbone, and phone numbers.
Call Control: Carrier vs. Non-Carrier
Carrier | Non-Carrier |
Licensed as an interconnected VOIP carrier | Application business that manages pass-through traffic |
Manages a private network environment | Reliant on the public internet for connectivity |
Tier-1 privileges from PSTN operators and owned phone number assets and routing control | Partners with telecom aggregators for communications functionality and numbers |
Carrier: Carrier refers to a licensed company that operates on the same footing and with the same regulatory privileges as other traditional telephone companies. So, these companies typically manage their private network, have direct interconnection and privileges with one PSTN operator. Therefore, these companies own their numbering assets and routing infrastructure.
Non-Carrier: However, Non-Carrier tends to focus on developing those APIs, better developer experience, call delivery, and providing numbers.
Author: SVCIT Editorial
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