Leif Madsen

Asterisk: The Definitive Guide by Leif Madsen,Jim Van Meggelen,Russell Bryant O'Reilly Media Paperback 5 May 2011 from£N/A | RRP: ~~£42.5~~
Asterisk: The Definitive Guide by Russell Bryant,Leif Madsen,Jim Van Meggelen O'Reilly Media Paperback 10 June 2013 from£N/A | RRP: ~~£35.5~~
Asterisk: The Future of Telephony by Jim Van Meggelen,Jared Smith,Leif Madsen O'Reilly Media Perfect Paperback 28 August 2007 from£43.37 | RRP: ~~£34.5~~
Asterisk: The Future of Telephony by Jim Van Meggelen,Jared Smith,Leif Madsen O'Reilly Media Paperback 16 September 2005 from£N/A | RRP: ~~£28.5~~
Asterisk: The Definitive Guide, 5e: Open Source Telephony for the Enterprise by ,Madsen, Leif O'Reilly Paperback 5 July 2019 from£38.11 | RRP: £
Asterisk Cookbook (Oreilly Cookbooks) by Leif Madsen,Russell Bryant O'Reilly Media Paperback 11 April 2011 from£N/A | RRP: ~~£22.99~~
Asterisk Cookbook by Jim Van Meggelen,Leif Madsen,Kristian Kielhofner,John Todd,Evan Henshaw-plath O'Reilly Paperback 3 November 2006 from£N/A | RRP: ~~£35.5~~