# Crazytel Knowledge Base — Full Article Index

> Auto-generated index of published knowledge base articles at https://crazytel.com.au/knowledgebase/
> Crazytel: Australian VoIP provider — SIP trunks, CrazyPBX, SMS, softphones, 1300/1800 numbers.

## CrazyAI

- [Getting Started with CrazyAI](https://crazytel.com.au/knowledgebase/article/getting-started-with-crazyai): This guide covers the basic setup of CrazyAI.

## CrazyPBX

- [CrazyPBX - Sign in to the Crazyphone App](https://crazytel.com.au/knowledgebase/article/crazypbx-crazyphone): This guide covers how to sign in to the Crazyphone application for Mobile or Desktop.
- [CrazyPBX - Making a CrazyPBX Time Switch](https://crazytel.com.au/knowledgebase/article/crazypbx-timeswitch): Time Switches route calls to set destinations based on the time of day, or date range. Time Switches are commonly used to set up business hours, or Do Not Disturb hours.
- [CrazyPBX - Making a CrazyPBX Speed Dial](https://crazytel.com.au/knowledgebase/article/crazypbx-speeddial): Speed dials act as phone number shortcuts. Speed Dials can be used to route to common internal CrazyPBX destinations, or external phone numbers.
- [CrazyPBX - Making a CrazyPBX Ring Group](https://crazytel.com.au/knowledgebase/article/crazypbx-ringgroup): A Ring Group alerts multiple endpoint devices when a single number is called. This guide covers how to make and configure a Ring Group for CrazyPBX
- [CrazyPBX - Making a CrazyPBX Manual Switch](https://crazytel.com.au/knowledgebase/article/crazypbx-manualswitch): A Manual Switch is a logic routing tool that allows CrazyPBX Extensions to swap routing between two (or more) set destinations. This guide covers how to make a Manual Switch.
- [CrazyPBX - Making a CrazyPBX Call Queue](https://crazytel.com.au/knowledgebase/article/crazypbx-callqueue): Call Queues act as a First in First out ordered stack of calls. Calls wait until a CrazyPBX Extension is available, or the maximum queue time elapses.
- [CrazyPBX - Making a CrazyPBX Autoattendant/IVR](https://crazytel.com.au/knowledgebase/article/crazypbx-IVR): IVRs/Auto Attendants are interactive menus that allow callers to pick a destination. This guide covers how to make one for your CrazyPBX.
- [CrazyPBX - Making a CrazyPBX Announcement](https://crazytel.com.au/knowledgebase/article/crazypbx-announcement): This guide covers how to make a CrazyPBX Announcement.
- [CrazyPBX - How to make a CrazyPBX Extension](https://crazytel.com.au/knowledgebase/article/crazypbx-extension): This guide covers how to make a CrazyPBX Extension, and what each option means.

## General

- [Crazyphone and other Softphone applications](https://crazytel.com.au/knowledgebase/article/softphones): The Crazyphone application, and recommended 3rd party softphone applications.
- [Why Can't I Make Calls With Telstra Caller ID?](https://crazytel.com.au/knowledgebase/article/why-cant-i-make-calls)
- [Porting a number to Crazytel](https://crazytel.com.au/knowledgebase/article/porting-a-number-to-crazytel)
- [What Numbers Can Crazytel support?](https://crazytel.com.au/knowledgebase/article/what-numbers-can-crazytel-support)
- [Making Calls While Overseas with Crazytel Services](https://crazytel.com.au/knowledgebase/article/making-calls-while-overseas-with-crazytel-services): When traveling internationally, staying connected to Australia is essential for both personal and business needs. Crazytel offers solutions that allow you to make calls to Australia seamlessly, regardless of your global location.
- [Receiving Calls with a Mobile Softphone while traveling internationally.](https://crazytel.com.au/knowledgebase/article/receiving-calls-with-a-mobile-softphone-while-traveling-internationally): The Crazytel CrazyPhone mobile softphone app transforms your smartphone into a powerful business phone system. This guide specifically focuses on how to properly configure and optimize your mobile softphone to receive incoming calls reliably, both within Australia and while traveling internationally.
- [Error Downloading External Provisioning -- What, and why?](https://crazytel.com.au/knowledgebase/article/error-downloading-external-provisioning-what-and-why): If you're encountering an ""Error Downloading External Provisioning"" message when trying to log in to the Crazyphone app, this guide will help you resolve the issue. This error typically occurs when users attempt to manually enter credentials instead of using the required QR code authentication method.
- [Receiving SMS with a Mobile Softphone While Overseas](https://crazytel.com.au/knowledgebase/article/receiving-sms-with-a-mobile-softphone-while-overseas): Many travelers need to stay connected to their Australian phone number while overseas, particularly for receiving SMS messages like verification codes, important notifications, and business communications. This guide explains how you can receive SMS messages on your mobile softphone while traveling internationally.
- [Porting a Skype number](https://crazytel.com.au/knowledgebase/article/porting-a-skype-number)
- [What devices can I access my account on?](https://crazytel.com.au/knowledgebase/article/what-devices-can-i-access-my-account-on)
- [What OS or hardware do I need to run Crazyphone?](https://crazytel.com.au/knowledgebase/article/what-os-or-hardware-do-i-need-to-run-crazyphone): What operating system does Crazyphone require? How much RAM? Do I need any special hardware?
- [Where are Crazytel's Data centers?](https://crazytel.com.au/knowledgebase/article/where-are-crazytels-data-centers): Crazytel's data centers are located in major cities around Australia (and a few internationally!). This geo-redundancy, combined with cutting-edge load balancing, ensures minimal interruptions if there's a system or server fault.
- [Multiple SIP Trunks with Multiple Extensions](https://crazytel.com.au/knowledgebase/article/multiple-sip-trunks-with-multiple-extensions): Many Crazytel customers ask whether they need to purchase multiple SIP Trunks or Extensions when they have multiple phone numbers. This guide explains how Crazytel's system allows you to manage multiple phone numbers (DIDs) with just a single SIP Trunk or Extension.
- [Plan Management](https://crazytel.com.au/knowledgebase/article/voip-plan-management): How to change your plan with Crazytel
- [Channel Partner |  Wholesale |  Affiliate Referral  - Commissions](https://crazytel.com.au/knowledgebase/article/channel-partner)
- [MMS Support](https://crazytel.com.au/knowledgebase/article/mms-support): Crazytel's support for MMS - what products do, and don't.
- [Changing 2FA Numbers](https://crazytel.com.au/knowledgebase/article/changing-2fa-numbers): How to change your 2FA number on your Crazytel account
- [Call Forwarding Charges](https://crazytel.com.au/knowledgebase/article/call-forwarding-charges): All about call forwarding charges.
- [Crazytel IP Addresses](https://crazytel.com.au/knowledgebase/article/crazytel-ip-addresses): All about the IP Addresses Crazytel uses
- [Access Denied Errors](https://crazytel.com.au/knowledgebase/article/access-denied-errors)
- [Inbound Call Problems](https://crazytel.com.au/knowledgebase/article/inbound-call-problems): Can't receive inbound calls? This article covers the basics.
- [Crazytel Physical SIM FAQ](https://crazytel.com.au/knowledgebase/article/physical-sim-faq): FAQ for Crazytel's Physical SIM/SIM only plans
- [VoIP Plan overview](https://crazytel.com.au/knowledgebase/article/voip-plan-overview): What VoIP Plans does Crazytel offer?
- [Legal Documents Repository](https://crazytel.com.au/knowledgebase/article/legal-docs): All about Crazytel's legal documents, and where to find them.
- [Sign up restrictions](https://crazytel.com.au/knowledgebase/article/sign-up-restrictions): Who can and can't sign up to Crazytel? What restrictions are in place?
- [SIP Trunks vs CrazyPBX](https://crazytel.com.au/knowledgebase/article/sip-trunks-vs-crazypbx): What's the difference between SIP Trunks and CrazyPBX? What's right for you?
- [SMS Message Costs (Virtual Mobile Numbers)](https://crazytel.com.au/knowledgebase/article/sms-message-costs): SMS message costs, and how to calculate them
- [International Call Pricing](https://crazytel.com.au/knowledgebase/article/international-call-pricing): All about international call pricing and how to place international calls.
- [SIP Trunks VS CrazyPBX Extensions -- what's the difference?](https://crazytel.com.au/knowledgebase/article/sip-trunks-vs-crazypbx-extensions-whats-the-difference): What's the difference between SIP Trunks and CrazyPBX Extensions? Which is right for you?
- [Understanding Codecs](https://crazytel.com.au/knowledgebase/article/understanding-codecs): A brief exposé on commonly found codecs -- nothing technical, only the basics!
- [No Sound on Calls (SIP Device, IP Phone, or Softphone)](https://crazytel.com.au/knowledgebase/article/no-sound-on-calls-sip-device-ip-phone-or-softphone): No audio on calls, but not using the Crazyphone app? Check these before raising a heldesk ticket.
- [No Sound on Calls (Crazyphone)](https://crazytel.com.au/knowledgebase/article/no-sound-on-calls-crazyphone): No Audio on the Crazyphone app? Check these settings!
- [NetComm NF18-Mesh | No Caller ID Issue](https://crazytel.com.au/knowledgebase/article/netcomm-nf18-mesh-no-caller-id-issue): This article provides instructions on how to stop NetComm NF18-Mesh devicesfrom  showing 'Anonymous' on all outbound calls.
- [Realtime Network Status](https://crazytel.com.au/knowledgebase/article/realtime-network-status): All about the Network Status Page
- [Account Login Issues](https://crazytel.com.au/knowledgebase/article/account-login-issues): This article covers common problems with signing into your account.
- [Call Drop Outs (30s+)](https://crazytel.com.au/knowledgebase/article/call-drop-outs-30s): This article covers common causes for call drop-outs after 30s of call time.
- [Call Drop-outs (10-30s)](https://crazytel.com.au/knowledgebase/article/call-drop-outs-10-30s): This article covers common causes for call drop-outs between 10 and 30 seconds. If your drop-out occurs after 30s, this is not the correct article.
- [Glossary of Terms](https://crazytel.com.au/knowledgebase/article/glossary): This article covers non-standard abbreviations and terms Crazytel uses.
- [How to Port Out your Mobile Number](https://crazytel.com.au/knowledgebase/article/porting-out-a-mobile-number): This guide explains how to port your Virtual Mobile Number away from Crazytel.
- [Creating a Register Based SIP Trunk](https://crazytel.com.au/knowledgebase/article/qr-code-sip-trunks): How to generate a new SIP Trunk QR Code

## Getting Started

- [Authorised Representatives and Advocates](https://crazytel.com.au/knowledgebase/article/authorised-representatives-and-advocates): All about appointing another person as a representative, or an advocate to communicate with Crazytel.
- [IPND Data](https://crazytel.com.au/knowledgebase/article/ipnd-data): How to add IPND information for numbers/services. IPND data is a legal requirement for services.
- [How to call forward your Crazytel number](https://crazytel.com.au/knowledgebase/article/how-to-call-forward-your-crazytel-number): Use Manage Phone Numbers to send inbound calls from your Crazytel number  to an external number.
- [Where to find call records](https://crazytel.com.au/knowledgebase/article/where-to-find-call-records): Use Call Detail Records (CDR) to review call, SMS, fax, data, and billing rows for the account. Here you can filter records, check summary totals, inspect individual rows, and export a CSV.
- [How to Buy a Number](https://crazytel.com.au/knowledgebase/article/how-to-buy-a-number): How to purchase a number from the Crazytel Customer Portal
- [CrazyPhone - Crazytel's official softphone application | Setup Guide](https://crazytel.com.au/knowledgebase/article/crazyphone-crazytels-official-softphone-application-setup-guide): Crazyphone is Crazytel's official softphone application. This guide covers setting up and signing into the application.

## Premium Features

- [Premium Voicemail](https://crazytel.com.au/knowledgebase/article/premium-voicemail): Premium Voicemail creates mailbox-based voicemail for selected phone numbers. It supports custom greetings, email and SMS alerts, transcription, retention controls, webhooks, inbox playback, and usage reporting.
- [Premium Recording Box](https://crazytel.com.au/knowledgebase/article/premium-recording-box): Premium Recording Boxes record inbound calls, optionally play a greeting, and then forward the call to another destination. They are useful when calls need to be captured for review, compliance, training, or follow-up.
- [Premium IVR](https://crazytel.com.au/knowledgebase/article/premium-ivr): Premium IVR lets callers press keypad digits to navigate menus and route themselves to the correct destination. It supports multi-level menus, audio prompts, business schedules, holiday overrides, alerts, webhooks, and Number Manager routing.
- [Premium Announcements](https://crazytel.com.au/knowledgebase/article/premium-announcements): Premium Announcements play an uploaded audio message to callers, then either hang up or forward the call to another destination. They support optional weekday schedules, holiday overrides, call history, and usage reporting.
- [Premium Time Conditions](https://crazytel.com.au/knowledgebase/article/premium-time-conditions): Premium Time Conditions route inbound calls based on the date, day of week, time of day, and holiday overrides. They are most commonly used for business hours, after-hours routing, public holidays, and temporary closures.

## SIP-Trunks

- [Premium Ring Groups](https://crazytel.com.au/knowledgebase/article/premium-ringgroups): Premium Ring Groups distribute inbound calls to multiple members. They support simultaneous, sequential, circular, and longest-idle ringing, plus schedules, holiday routing, announcements, recording, transcription, AI insights, alerts, webhooks, and secure download links.
- [SIP Trunk Announcements - How To](https://crazytel.com.au/knowledgebase/article/sip-trunk-announcements-how-to): How to set up an announcement for use with SIP Trunk routing
- [SIP Trunk Auto Attendants / IVR - HOW TO](https://crazytel.com.au/knowledgebase/article/siptrunk-ivr): How to set up a SIP Trunk IVR/Auto Attendant. IVRs allow callers to press a keypad button to navigate an in-call menu to select a destination.
- [How to: Make a SIP Trunk Ring Group](https://crazytel.com.au/knowledgebase/article/how-to-make-a-sip-trunk-ring-group): This article covers how to make a Ring Group for SIP Trunks.
- [SRTP Compatibility with Crazytel](https://crazytel.com.au/knowledgebase/article/srtp-compatibility-with-crazytel): This article outlines the compatibility of Secure Real-time Transport Protocol (SRTP) with the Crazytel SIP Trunk network.
- [Configuring Custom Outbound Proxy Settings](https://crazytel.com.au/knowledgebase/article/Configuring%20Custom%20Outbound%20Proxy%20Settings): Issue: Occasionally, our system may not automatically connect you to the nearest Point of Presence (POP) due to your Internet Service Provider's (ISP) centralized DNS setup. This can result in slower connectivity.

## SMS Center

- [SMS Center - Getting Started](https://crazytel.com.au/knowledgebase/article/smscenter-basics): This guide covers the basics for Crazytel's new SMS Center; inbound setup, outbound setup, contact lists, opt-out lists.
- [SMS Frequently Asked Questions](https://crazytel.com.au/knowledgebase/article/sms-frequently-asked-questions): The SMS Center covers day-to-day sending, 2-way conversations, bulk messaging, scheduled sends, authorised email senders, mobile number setup, address books, opt-out compliance, and message logs.

## News & Updates

- [Crazytel Now Offers UK Landline and Virtual Mobile Numbers](https://crazytel.com.au/news/post/crazytel-now-offers-uk-landline-and-virtual-mobile-numbers): Crazytel has added UK landline and UK virtual mobile numbers. Friends, family, and business contacts can reach you as a local UK call, virtual mobiles can receive SMS, and you can skip expensive international roaming. UK number porting is coming soon.
- [Triple Zero on Our New Network: No Ifs, No Buts, No Blocks](https://crazytel.com.au/news/post/triple-zero-on-our-new-network-no-ifs-no-buts-no-blocks): On Crazytel's new SIP Trunk network, calls to 000 bypass every account check - disabled trunks, negative balances, spend limits, the lot. Built into the core routing layer, not bolted on as an afterthought.
- [Crazytel Now Supports IPv6](https://crazytel.com.au/news/post/crazytel-now-supports-ipv6): Crazytel now supports native IPv6 across our network - one of the first Australian VoIP providers to do so. If you already have IPv6, routing is automatic: no NAT, lower latency, and nothing you need to change.
- [Introducing AI Bridge: Connect Your Phone Numbers to the World's Leading AI Voice Platforms](https://crazytel.com.au/news/post/introducing-ai-bridge-connect-your-phone-numbers-to-the-worlds-leading-ai-voice-platforms): AI Bridge is a custom-engineered gateway that connects your Crazytel phone numbers to leading AI voice platforms like OpenAI Realtime, Vapi, and Retell. Free during beta - and 12 months free if you join now.
- [Crazytel: The Who, What, When & Why](https://crazytel.com.au/news/post/crazytel-the-who-what-when-why): Setting the record straight on rumours about Crazytel's ownership, grandfathered plans, and SIP Trunk changes — plus an honest look at our growth over the past 12 months.
- [Custom On-Hold Music, Powered by AI](https://crazytel.com.au/news/post/custom-on-hold-music-powered-by-ai): Create professional custom on-hold music with AI for only $2 per track. Discover how our AI generator provides affordable, studio-quality hold music and voiceovers for your VoIP business phone system.
- [CrazyFax: Rebuilt From the Ground Up](https://crazytel.com.au/news/post/crazyfax-rebuilt-from-the-ground-up): We rebuilt CrazyFax entirely in-house - a modern cloud fax platform with REST API, email-to-fax, fax-to-email, webhooks, and 100% Australian data sovereignty. No hardware, no middleware, just fax that works.
- [Crazytel SIP Trunks Now Support Retell AI!](https://crazytel.com.au/news/post/crazytel-sip-trunks-now-support-retell-ai): Your Crazytel SIP Trunks can now connect directly to Retell AI for outbound calls, AI voice agents, and more. We're building the features you want.

## Site

- [Crazytel homepage](https://crazytel.com.au/)
- [Curated llms.txt](https://crazytel.com.au/llms.txt)