Tel USB-P4K does not transfer by pressing FLASH. Gateway to set up, try different settings, and read a lot of different forums does not work. As in the 3CX 7.1 can be programmed a code, type * 4_12 send you the post office and selected subscriber, and for the transfer * 5_12 send and transfer a call 12 numbers. Or make 3CX on pressing FLASH, how to react. Prompt the decision of this question?
http://www.3cx.com/forums/telefon-usb-p4k-ne-perevodit-po-nazhatiju-knopki-flash-14117.html#p72440
http://www.3cx.com/forums/telefon-usb-p4k-ne-perevodit-po-nazhatiju-knopki-flash-14117.html#p72440
