Asterisk Blog

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AstriDevCon July 2025

An AstriDevCon video conference was held on July 20, 2025 with about 15 attendees.  You can get a recap of the event at AstriDevCon July 2025 ...
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Testing

Continuous Integration Update

Back in December in my The Continuing Saga of Continuous Integration blog post I wrote about how we reduced the Testsuite’s “27” layers of file ...
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DocumentationHow To

Changing CHANGES (and UPGRADE.txt)

Overview For those of you who have been around for a while now and contribute to the code base, you probably know about CHANGES and ...
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Architecture

res_mwi_devstate: Presence subscription for voicemail mailboxes!

In Asterisk we have an API called device state. As the name implies this allows a device (such as a PJSIP endpoint) to provide notification ...
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Architecture

Developer Notes: Large Number Storage

I ran into a curious problem the other day while working on an issue involving the storage, manipulation, and conversion of large number values in ...
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ARIDocumentation

Stasis Improvements: Goodbye Dialplan!

Overview One of the topics of discussion every year at Astricon is not needing to use the dialplan in order to use Stasis. This involves ...
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Uncategorized

Did you know you can use “@” variables in pjsip.conf?

You probably already know that you can use the “set_var” parameter on pjsip endpoints to add variables to a channel using that endpoint but did ...
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ARIDocumentation

Filtering Event Types in ARI

Since the arrival of the Asterisk REST Interface (ARI) requests have been made to allow for event type filtering capabilities. Consumers have wanted a way ...
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ArchitectureDocumentation

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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ArchitecturePerformance

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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ArchitecturePerformance

stasis: Statistics CLI Commands

Previously on this blog I talked about a new feature to internally filter messages in our internal message bus, as well as a new caching ...
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TestingTuning

The Continuing Saga of Continuous Integration

or… “Watch This Space” If you’re an Asterisk contributor you’ve probably noticed that we’d been having issues with large numbers of Jenkins test failures during ...
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Asterisk 15Asterisk 16

pjproject-2.8 Qualified For Use With Asterisk

With the release of Asterisk versions 13.24.0-rc1, 15.7.0-rc1 and 16.1.0-rc1, we’re pleased to say that pjproject-2.8 has been qualified for use with Asterisk. In these ...
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Asterisk-18.0.0-rc1 Released!

Greetings Everyone! Another year has flown by and while we now live in interesting times this has not stopped the development and progress of Asterisk

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Common SIP URI Issues

When transitioning from the chan_sip channel driver to chan_pjsip one of the items that can catch people off guard is the use of SIP URIs

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New PJSIP Logging Functionality

When PJSIP support was written for Asterisk we naturally needed the ability to display the SIP messages being sent and received. This took the form

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