Manuals and free owners instruction pdf guides. Find the user manual and the help you need for the products you own at ManualsOnline. Free User Manuals By Brands ManualsOnline.com. Written permission of ZTE Corporation and Q LINK WIRELESS LLC. ZTE Corporation and Q Link Wireless reserve the right to make modifications on print errors or update specifications in this guide without prior notice. This manual has been designed with the utmost care to ensure the accuracy of its content. Aug 27, 2007 Parllel cutover means, after golive, the end use enter the transactions in both SAP and their legacy systems also. They run both the systems parllely. Sergical cutover means, on golive, the end uses stop entering the transactions in legacy systems and strat entering in SAP, only SAP will run from that date. Preparation of user manual.