LeifMadsen Enterprises, Inc. enters its 7th year of operation!

On this day in 2005, LeifMadsen Enterprises, Inc. was formally registered as an incorporation by the government of Canada! I’ve now been consulting on Asterisk professionally for over 6 years full time (and a few years before that!). I graduated from the telecommuncations technology program at Sheridan Institute of Technology in 2004. In that time I’ve spoken at every AstriCon since 2004 (the first one), and have helped write 4 books on the subject of Asterisk (The Future of Telephony 1st, 2nd editions, The Definitive Guide 3rd edition, Cookbook). Read On →

Chopsticks Played On The Phone

As I haven’t updated my blog in a while (been very busy with wedding planning!) I thought I’d share this with you :) Enjoy! http://www.break.com/index/chopsticks-played-on-phone.html

Asterisk 1.8 And The Importance Of Looking Ahead

With the end of maintenance for the Asterisk 1.4 (the previous long term support (LTS) release) and Asterisk 1.6.2 (the previous standard, short term support release) branches, the time to look at using Asterisk 1.8 (the next long term support release, which provides another 4 years of maintenance, followed by a year of security support) is upon us. For those who have successful deployments of Asterisk 1.4 and 1.6.2 (heck, even 1. Read On →

Blast From The Past: The Original Asterisk Book Cover

Jim nixed this cover pretty fast. Another suggestion from Mark was a Moose (back in the day there was a running joke about moose penis… don’t ask. It was a dark time).

Request for Reviews for Asterisk: The Definitive Guide

Recently Jim Van Meggelen, Russell Bryant and myself released the 3rd edition of the Asterisk book published by O’Reilly Media titled ‘Asterisk: The Definitive Guide’. We have released this book under a Creative Commons license in the spirit of Open Source software. It is available in its entirety at http://ofps.oreilly.com/titles/9780596517342/ and for purchase through Amazon at http://www.amazon.com/Asterisk-Definitive-Guide-Leif-Madsen/dp/0596517343/ref=sr_1_1?ie=UTF8&s=books&qid=1303765969&sr=8-1 If you have a chance to review the book, and feel it is a useful and well written resource, we would appreciate your favorable review on Amazon. Read On →

Asterisk Tech Tips: Asterisk Cookbook (April 21, 2011)

Mark your calendars! The next installment of the Asterisk Tech Tips webinar by Digium will feature Russell Bryant and myself presenting a couple of recipes from the Asterisk Cookbook. The presentation will be on April 21, 2011 at 12:00 Noon CDT (-0500 GMT). From the blog post by Steven Sokol of Digium: “I’m pleased to announce that Russell Bryant and Leif Madsen, two giants of the Asterisk community, will host the next Asterisk Tech Tips event, scheduled for Thursday, April 21. Read On →

Asterisk Cookbook Is Done!

Just a quick update that the Asterisk Cookbook is complete! We’ll be releasing it under a Creative Commons license (just like Asterisk: The Definitive Guide) again. It’ll be a 24 recipe e-book right now, with it growing over time and eventually becoming a full print edition once the size warrants it. Of course if you purchase now you help spur on additional incentive to continue making it larger. I’ve been told that you also continue to receive updates automatically as the book grows and corrections are made (which sounds pretty cool! Read On →

Asterisk Cookbook Ready For Review!

Just a quick note that we’ve finished the Asterisk Cookbook (electronic edition) and it is now ready for review! We’re hoping to have all comments submitted within the next week. We’re using OFPS (Open Feedback Publishing System) again. You can read the book and help review here: http://ofps.oreilly.com/titles/9781449303822/

Debugging the Asterisk Dialplan with Verbose()

In case you missed it, Russell Bryant wrote a blog post on debugging the Asterisk dialplan with the Verbose() application. This is one of the recipes that will be features in the upcoming Asterisk Cookbook that we’re writing, and hoping to have done by the end of March! (In case you’ve missed all the cool stuff lately, the Asterisk Cookbook will also be released under the same Creative Commons license as the previous Asterisk books. Read On →

Using #exec to set externaddr in sip.conf

Today I was working on a system, and knowing that the system is going to get moved, and that often one of the things forgotten is to update the externaddr= option in sip.conf (when Asterisk is sitting behind NAT), I decided to put together a little script that returns the external IP address of the system. Using this script along with an #exec in the sip.conf file will make it so the address gets updated when the system is moved to the new physical location. Read On →