Asterisk Blog

ARIAsterisk 20

Exchanging media between Asterisk and apps has just gotten easier!

Exchanging media between Asterisk and external apps has fairly involved for a few reasons, the main one being that RTP, the primary protocol for exchanging ...
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Architecture

Stream Support in Asterisk

Media streams are something that we all use every day. From watching videos on Youtube to placing calls media streams are right there with us ...
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DocumentationHow To

Configuring the Opus Encoder for Asterisk

The recently announced Opus codec for Asterisk exposes a few configuration options that allow you to manipulate the encoder for your particular setup. These options ...
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ArchitectureDocumentation

Jitter Buffer Operation and Use in Asterisk

Jitter buffer functionality has been in Asterisk for quite some time now. However, knowing what jitter is in a voice over IP (VoIP) application and ...
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PerformancePJSIP

SIP timers T1 and B affect performance

Busy Asterisk systems can be affected by the SIP timers T1 and B timeout values configured.  Consideration of their values impacts how quickly a transaction ...
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PJSIPSIP

New Feature: PJSIP Dual Stack

A new feature that was initially implemented during a recent visit to SIPit has now been merged into the 13, 14, and master Asterisk branches. ...
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Asterisk 14

Asterisk 14 Webinar

Slight interlude from your regularly scheduled programming. For any interested, Matthew Fredrickson, manager of the Asterisk project, will be giving a webinar today about Asterisk ...
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PJSIPReleases

The Case Of The Misunderstood PJSIP Callback

When the PJSIP work for Asterisk began one of the primary concerns kept in mind was that it be extensible. One of the APIs derived ...
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Asterisk 14PJSIP

AstriDevCon 2016 – A Recap

For those of you who were unable to attend, AstriDevCon this year at Phoenix continued to impress. There were 39 people signed up, and at ...
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ArchitectureDPMA

Automatically Download Binary Modules: New Feature in Asterisk 13.12 and 14.1

The Digium Phone Module for Asterisk and the g729a, silk, siren7 and siren14 codec binary modules hosted at downloads.digium.com can now be automatically downloaded and installed ...
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Documentation

Documentation? We’ve Got That!

I’ve been a part of the Asterisk project for many years now, over 10 in fact. I’ve seen it evolve and grow and one of ...
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Architecture

Asterisk Architecture: The Bridging Framework Part I

Overview When the development goals were laid out at AstriDevCon for Asterisk 12 way back in 2012, we had two primary missions: Build a new ...
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Asterisk 14PJSIP

Asterisk 14: Publishing Extension State

Asterisk 14 now has the ability to publish extension state using PJSIP PUBLISH requests to another entity acting as an event state compositor. For larger ...
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Asterisk INLINE Optimization

Asterisk developers who have made use of one of our function attributes called “force_inline” should be aware we are discouraging it.  Why? Let’s get to

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R.I.P. Media Index Cache!

If you’ve been concerned about slow Asterisk startup times or excessive memory utilization, we’ve got some good news for you.  We’ve eliminated the media index

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AstriDevCon 2018 – A Recap

Hey Everybody, It’s about a month out from AstriDevCon 2018 and I wanted to write a little bit to summarize what we discussed this year.

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