http://twitter.com/leif_madsen
Asterisk Consultant, Author
Areas of Expertise:
- asterisk
- clustering
- call-centre
- call-center
- dialplan
- queues
- odbc
- func_odbc
- consulting
- speaking
- programming
- writing
Biography
Books
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(Blog
Leif's blog posts are hosted at:
http://leifmadsen.wordpress.com/
http://leifmadsen.wordpress.com/
November 14 2009
Wow it’s been a long time since I’ve update my blog. Well, lets do that! I’ve just posted some documentation to the Asterisk issue tracker for review. It’s about building queues with Asterisk. It is the start of probably 2 or 3 sets of documentation on building queues with Asterisk… read moreAstriCon 2009, Building a Distributed Call Center
October 07 2009
Every year that AstriCon has existed, I have presented or at least helped organize, and this year is no exception. I will be presenting on Wednesday, October 14, 2009 from 10:00am to 10:35am in the Carrier/Call Center track. I will be the first presenter of the day hoping to give… read moreSeptember 08 2009
I figured that due to my limited time to write blog posts, and my intent to try and write at least one blog post a week, I’d do a simple “Ask the Expert” type of article. I’ll take 5 of your questions and answer them in a blog post later… read moreAugust 27 2009
Recently I’ve been noticing a lot more use of QR codes around the internet. A QR code is those 2D matrices that look like a bar code, but aren’t just the ordinary vertical lines that you would see on your box of cereal. These are a box that contain pixels… read moreConsuming SOAP complexType webservice with PHP
August 04 2009
I recently had a client request that I communicate with a webservice via SOAP in order to do some credit card authorization for an Asterisk project they were implementing. After a couple of days of reading several posts I found via Google (which funny enough weren’t exactly what I was… read moreSuzanne Bowen Interviews Leif Madsen, Asterisk Rockstar
July 30 2009
Today I had the privilege to be interviewed by Suzanne Bowen of DIDX. You can find the interview at http://www.didx.net/podcast/?p=episode&name=2009-07-30_leifmadsenjul312009.m p3 Hope you enjoy! Here is a description of the interview: “Truth is that I “met” the authors of the book “Asterisk, the Future of Telephony” when I was an English teacher and had volunteered… read moreLoad testing SIP registrations with SIPp
July 29 2009
Today I had a need to go and load a bunch of registrations into Asterisk for a bug I was working on. Since I’ve had this need a couple of times now, and I keep going and having to redevelop it, I think I’ll just write about it here, and… read moreImporting Master.csv into MySQL CDR table
July 29 2009
Today I had a client that had a need to run some statistical analysis on their data, but since they didn’t have anything like that developed, I had to go on a search to find them something. After asking around on IRC (and pretty much knowing what the answer was… read moreJuly 19 2009
Prevalent beliefs that knowledge can be tapped from previous incarnations or from a “universal mind” (the repository of all past wisdom and creativity) not only are implausible but also unfairly demean the stunning achievements of individual human brains. Posted in Musings read moreIssues: ast_rtp_senddigit_begin: Don’t know how to represent ‘f’ (one way audio)
July 18 2009
I keep seeing questions like this recently on the mailing list and in the #asterisk IRC channel. “ast_rtp_senddigit_begin: Don’t know how to represent ‘f’ shows up on the console then I get one way audio… * 1.4.25.1, wanpipe 3.3.15.20, zaptel 1.4.12.1, libpri 1.4.7…. any suggestions?” I forget who originally said how to… read moreHowTo: Getting Jabber/XMPP notifications from your PBX
July 18 2009
I just have to write up a quick post to show you JUST HOW SIMPLE it is to get interesting events from your PBX via Jabber. Right now I’m using it to notify me of anyone trying out my test ISN number, or whenever they join my conference bridge (good… read moreJuly 18 2009
A funny thing happened today. Fred Posner posted an article about telemarketer torture (here). He has some examples that his script created. It was funny because today I worked on almost the exact same thing. My implementation was a bit different, but I really like the approach he took too. We… read moreHowTo: Read a value from a file, and say it back
July 17 2009
Preample Today on the VoIP Users Conference we discussed my request for recipe ideas in order to start developing some additional documentation. Specifically, I’m looking for problems that are simple, common problems that can be solved in the dialplan, and which are good examples of the dialplan language (markup, script, yadda… read moreMigrating from AgentCallbackLogin() to Standard Dialplan Methods (part 1)
July 16 2009
The purpose of this article is to ease the migration from AgentCallbackLogin() to using standard dialplan applications to solve the problem of calling back queue members (agents) who are logged into a queue. We will look at some of the common uses of AgentCallbackLogin(), and explore how to perform the same… read moreHowTo: Page() all users, other than current channel
July 15 2009
I was asked on IRC by bhodder how to Page() all users, other than the current channel (i.e. he had a list of people to call, but one of the channels listed could be the person paging, and he didn’t want them paged). So I wrote up the following little dialplan… read moreAlso find Leif on:
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