1.4 Port Asterisk GSM Card 2.PCI 2.2 Slot 3. PSTN, Phone, CDMA, GSM Support ... /1800M/1900M. 4,Support 8 channels, user can choose to insert wireless, FXO or FXS module in each channel. ... TDM400P’s driver—WCTDM, so user don’t need to understand much knowledge about wireless part. All theprogram run ... offer a 100% money back guarantee. Return shipping is to be paid by the Buyer. On receiving items, we ...