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Kevin Harwell

Blog Author

About the Author

Kevin is a Software Developer at Digium. He has a diverse background in the software industry and has worked on an assortment of projects. Since joining the Asterisk team a few years ago he has been a frequent contributor to a variety of areas within the project. He also can usually be seen with a cup of hot tea.

Asterisk Test Suite: Building Better Tests

By Kevin Harwell

Let’s talk some more about testing, understanding the test framework for Asterisk, and building better tests. An exciting topic I know! In a previous post, we discussed how unit testing Asterisk

Asterisk Call Party, Privacy, and Header Presentation

By Kevin Harwell

Asterisk allows users to manipulate call party identification information through mechanisms like configuration options and dialplan functions (for instance CALLERID and CONNECTEDLINE to name a couple). This grants the user

Asterisk 15: Multi-stream Media and SFU

By Kevin Harwell

In a previous post some of the upcoming changes made for Asterisk 15 have been discussed. Specifically, one of the items mentioned is the beginnings of a multi-stream media framework.

Asterisk, Opus, packet loss, and FEC

By Kevin Harwell

So you’ve heard there is now an Opus codec for Asterisk that’s been released. However, you are having problems with poor audio quality due to packets being dropped or lost.

Configuring the Opus Encoder for Asterisk

By Kevin Harwell

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 can be set within codecs.conf.

Jitter Buffer Operation and Use in Asterisk

By Kevin Harwell

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 when to use a de-jittering

Asterisk 14 DNS: Resolve to Resolve

By Kevin Harwell

Asterisk 14: Coming with improved PJSIP DNS Support spoke about the new core DNS API, and mentioned several of the enhancements implemented. In this post we will focus more on

Asterisk, ODBC, and Connections

By Kevin Harwell

As mentioned in a previous post there have been some fundamental changes made to the Asterisk ODBC resource module, res_odbc. Specifically, the single connection bottle neck was removed in favor

Asterisk 13.8.0 Highlights

By Kevin Harwell

Asterisk 13.8.0 was just recently released. As usual this release includes bug fixes as well as a few new features. Many of which were submitted and patched by community members

How To: Unit Testing Asterisk

By Kevin Harwell

So you’ve written some code for Asterisk and now you need to test it. The Asterisk project has support for both integration and unit testing. In this post we’ll talk

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