使用电脑的离线式多路电话计费软件。一个计费板插在电脑的PCI扩展槽上，多路电话线接入，实施计费。-use computers offline multi-way telephone billing software. Billing a plate inserted in a computer PCI expansion slot, multi-line access, billing implementation.

ICS564 Loop demo through PCI data path. DAC in Quadrature Upconverter mode .