Garrison, Kerry books & textbook
TrixBox Made Easy: A Step-by-step Guide to Installling and Running Your Home and Office Volp System
Dempster, Barrie Garrison, Kerry
Packt Pub Ltd /2006-10-30 Paperback / 155 Pages
isbn-10: 1904811930 / isbn-13: 9781904811930
Trixbox Ce 2.5
Packt Pub Ltd /2009-02-28 Paperback / 344 Pages
isbn-10: 1847192998 / isbn-13: 9781847192998
3cx Version 9
Kerry Garrison /2010-11-15 Paperback / 252 Pages
isbn-10: 0983163901 / isbn-13: 9780983163909