Digium 1A4B04F 4-Port Modular Analog PCI-Express Card with 2 Station & 2 Trunk Interfaces and Echo Cancellation

With a modular design, the Digium A4B04F PCI Express card can be mixed and matched with up to four FXO and FXS modules. The 1A4B04F PCIe card includes two FXO ports and two FXS ports. Utilize the Digium 1A4B04F card to connect analog and VoIP solutions. The echo cancellation technology built into this Digium card compliments audio quality. The Digium A4B04F PCIe card is compatible with Asterisk.

Key Features:

• Mfr. Part #: 1A4B04F
• Base Card: A4B
• Number of FXO Ports: 2
• Number of FXS Ports: 2
• Maximum Ports: 4
• Echo Cancellation: Yes
• Slot Type: PCI Express
• Loop Start or Kewl Start Signaling
• Digium patented VoiceBus technology for better audio
• Optional DSP -based carrier grade echo cancellation module
• Available in low profile (optional bracket), half-length PCI and PCI Express form factors