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AstriCon 2024 Videos Now Available!

This is just a quick post to state that the AstriCon 2024 videos are now available on YouTube here. We had both pre-conference webinars as ...
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Meet Chris Savinovich!

Earlier this year, the Asterisk team at Digium got a little bit bigger!  For today’s blog post, I’m going to interview Chris Savinovich, the most ...
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Asterisk 15Conference Bridge

Enhanced Messaging in Asterisk 13 and 15

The next releases of Asterisk 13 and 15 extend MESSAGE support in chan_pjsip and add it to conference bridges.  While Asterisk has supported the SIP ...
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Asterisk 15PJSIP

Receiver Estimated Maximum Bitrate Support

For the last few months I, along with Ben Ford, have been working on improving the user experience side of the WebRTC support in Asterisk. ...
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Asterisk 15Realtime

RTP: retransmission for video to combat packet loss

Introduction Packet loss can be an annoying problem when dealing with real time communication, especially when dealing with video. It’s very noticeable when the screen ...
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Asterisk 16

It’s getting to be that time of year!

With the changing weather, some of us are thinking about summer with excitement, others about winter with trepidation.  Regardless of which hemisphere you live in ...
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Asterisk 14Asterisk 15

A Call to Action!

Hey Everybody! For those of you that don’t know me, my name is Matthew Fredrickson and I’m the Asterisk Open Source Project Lead. Does that ...
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Asterisk 15WebRTC

WebRTC and Asterisk: When It Goes Wrong

Like many things WebRTC is a complex stack of technology within Asterisk and also within the browser. The result of this is that to the ...
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DocumentationPJSIP

Asterisk Call Party, Privacy, and Header Presentation

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 ...
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Asterisk 15PJSIP

The Woes of TLS Certificates and WebRTC

TLS certificates and their management are something we take for granted every day when we visit a website. If you sit down and try to ...
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DocumentationPJSIP

Identifying an endpoint in PJSIP

A basic concept with chan_pjsip/res_pjsip is the endpoint. When a new SIP request comes in, res_pjsip needs to identify which endpoint the request is for. ...
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ArchitecturePJSIP

WANTED: Dead or Alive!

The Story of Asterisk and Keep-Alives The vast majority of VoIP communications is done via UDP datagrams.  It’s a no-overhead protocol which makes it fast ...
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PJSIP

PJSIP: DNS Manager (dnsmgr) and Full Dynamic Hostname Support, Coming Soon!

Recently there’s been discussion on chan_sip going away in the future which led to many comparisons between it and chan_pjsip. What does chan_pjsip do better? ...
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Debugging Tips and Tricks

Overview One of the most challenging things about coding is when your code doesn’t work and you have to figure out why. Trying to track

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An Asterisk Video Update

Over the past few years we’ve been working to improve the video support in Asterisk. We initially started with adding stream support[1] in a backwards

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ARI: Rested Developments

The Asterisk Rest Interface (ARI) over the last year received several enhancements that have been requested by the community: server side event filtering automatic context

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Asterisk-17.0.0-rc1 Released!

Greetings Everyone! Time flies when you are having fun and improving Asterisk; this past year has been no different. October and Astricon [1] are fast

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PJSIP Configuration Design

A comment that I see frequently when helping people with PJSIP is the lack of a general section (with global options) and how this causes

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