asterisk

Notes on rebuilding andrius/asterisk. The template system, the version coverage from 1.2.40 to 23.2.0, and the CI/CD that keeps it supported.

Notes on integrating Asterisk 23's chan_websocket channel driver with Pipecat. Three attempts, the protocol surprises, and the small bridge code that ended up working end-to-end.

I've created and open-sourced a Crystal-lang shard (library) that handles all Asterisk PBX interfaces (ARI, AMI, and all types of AGI).

Announcing the first alpha release of the Roaming PBX image, featuring Ruby, pcapsipdump, Asterisk PBX, and the SILK codec.

How to cross-compile a custom Raspberry Pi image and to build custom Asterisk PBX installation.

How to get Asterisk PBX working with SILK and AMR-NB codecs.

Here is a script that installs Asterisk PBX 11.x: with fax support, MySQL, Ruby, and Adhearsion AGI.

As a frequent traveler, I understand the telecommunications needs of other travelers and citizens of the world. Recently, I decided to dedicate my free time to building a Roaming PBX solution.

In the world of Asterisk, the dial-plan is a powerful tool for creating custom voice applications. However, there are situations where using AGI (Asterisk Gateway Interface) is preferred. This article explores the reasons why AGI can be a valuable addition to your Asterisk system.

Sharing one of my older projects with Asterisk: a click-to-call library with client and server components. It does work with Windows!

After my last post about the GSM gateway based on Raspberry Pi and Huawei modem, I received a few questions asking how to unlock it. Below is a YouTube video that describes the process.

Yesterday, I installed chan_dongle for my Asterisk PBX running on Raspberry Pi. chan_dongle is a driver that enables the use of Huawei 3G USB dongles as a voice "board" for handling voice, SMS, and USSD. I conducted extensive research on various topics and summarized everything in a document. Additionally, I provided useful links related to Asterisk CLI commands, troubleshooting Huawei modems, and additional resources for chan_dongle.

The typical telephony system processes incoming call flows based on different times. Customers want to have control over this and handle time ranges. The platform can also be a multi-tenant server with different virtual PBXes. In my implementation, I use Ruby, ActiveRecord, and polymorphic associations to create routing blocks. By reusing polymorphic database associations, I can create flexible call flow building blocks. These blocks can be linked to any voice-related entity in a PBX, such as an extension, voicemail, conference, etc. This enables customizable and dynamic call handling based on time conditions.

The Questionnaire application, based on the AsteriskRuby gem, is a production-ready system that was developed a while ago for a small project. Now, I want to share it with the VoIP community. The application provides caller authentication, prompts for a PIN code, and continues from the last unanswered question for returning callers, storing answers and call records in the database.

How to build a telecommunication system to keep you connected globally while maintaining a good price/quality/flexibility balance. The components include a VoIP server, prepaid SIM card, and DID phone number for low-cost or zero-cost calls.

The Asterisk PBX AGI sample in Bash is a great option for creating small yet flexible dial plans for embedded devices and more.