A new user was struggling with the 3CX Windows PBX and 3CX forum user Orlin Shopov gave this excellent recommendation:
Read the admin manual or try searching the internet for the book 'The 3CX IP PBX Tutorial' - it can be very useful...Okay, so I admit I am the co-author of the 3CX IP PBX Tutorial along with Robert Lloyd. And, yes, I guess I'm a little biased here. ;-) But may I recommend if you need 3CX you check with http://eagle-engineering.net/ ?
Also if you are looking for consulting or technical support related to 3CX, Microsoft Lync Server 2010 or the Windows based snom ONE PBX let my company know! http://www.landiscomputer.com/.
Get the book at Amazon: