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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...

Digium 1A4B03F supports up to four analog FXO and FXS analog. This modular PCI Express card includes four FXO modules and built-in echo cancellation. Plug in this card and leverage an analog system with a VoIP system. Digium 1A4B03F is compatible with...

Digium 1A4B02F features four FXO modules. This modular PCI Express card is ideal for analog and VoIP telephony systems. Use the 1A4B02F PCI Express card with Asterisk or other compatible open source systems.Digium 1A4B02F 4 FXO Port PCI-E Card Quick...

Digum 1A4B01F is a modular PCI Express card with built-in echo cancellation. Mix and match this telephony card with up to four FXO and FXS modules, letting you provision the A4B01F PCI Express card as your network requires. Use the Digium 1A4B01F card to...

Digium's A4B-series telephony cards feature PCI Express architecture. This base card can support up to four analog expansion modules, either FXS or FXO. Scale the 1A4B00F PCI Express card to your system's requirements, leveraging analog and VoIP. This...

The Adtran NetVanta 1544 network switch features 24 gigabit Ethernet ports and four SFP ports. The Ethernet ports are perfect for VoIP, video and data, including IP phones and communications equipment. The four SFP optical ports offer 1.0 and 2.5 Gbps...

The Adtran NetVanta 1531 network switch features ten gigabit Ethernet ports and two gigabit SFP ports. Connect your VoIP phones, desktop devices and other essential equipment to this switch. Layer 3 Lite switching enables high-speed, reliable network...

The Adtran NetVanta 1544F network switch includes 24 gigabit-speed SFP ports, and four SFP ports with selectable speeds of 1 Gbps and 2.5 Gbps. Each port supports real-time diagnostic information and statistics for reliably managing connected devices...

The Adtran NetVanta 3205 router features a modular design with NIM, DIM, LAN and console port interfaces. The routerâ network interface module (NIM) provides flexibility, while the dial backup interface module (DIM) supplies better bandwidth. Deploy the...

The Adtran NetVanta 3200 router supports two T1s of network bandwidth. The router includes a modular network interface module and a modular dial backup interface module. Also built into the router is a stateful inspection firewall, DoS prevention, access...

Adtran NetVanta 4305 The Adtran NetVanta 4305 modular router features three slots, including two NIM slots and one wide slot with eight T1 ports. Up to eight T1s of bandwidth are supported by this versatile network router. Monitor and maintain the...

The Adtran NetVanta 3305 modular access router features two network interface modules and two auto-sensing LAN ports. Up the three T1s of bandwidth are supported by the router. Deploy the router for Internet access, VPNs, point-to-point connectivity and...