Knowledge Base
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Knowledge Base
CALLR & Telecom Basics
From the telecom baggage to the legal frameworks, this section covers the basics you need to use CALLR Console & API to the best of your ability.
Account & Billing
CALLR is an on-demand service. By default, your account is prepaid, and you can switch to postpaid after a credit check. Here's how.
Tutorials and FAQs
CALLR Console
Make the most of the CALLR Console with in-depth tutorials and FAQ to help you buy numbers, set up call forwarding and control calls in real-time.
API
Enjoy step by step guidance to learn how to use our API on the programming language you are familiar with: PHP, Python, Ruby or NodeJS.
SIP & IAX
Find resources to help you install, configure and diagnostic your SIP trunking, IAX or Registrar SIP service as well as answers to VoIP frequently asked questions.
