VoIP Cards

Digium 3244-00044 is a low profile rackmount bracket for compatible single-span digital T1 cards. Use the bracket with a Digium TE133 or TE134 card featuring a single T1 port/span.

Digium's A4-series PCI cards are designed to interface analog and VoIP connections. For example, connect an Asterisk-based PBX to analog phone lines, or connect an analog PBX system to VoIP.This base card is modular, meaning it can be expanded by...

This base PCI card for Digium's A4-series is scalable through expansion modules. Connect up to four interchangeable FXO or FXS modules. This base card also includes a carrier-grade echo cancellation unit for higher audio quality.The Digium A4-series base...

Digium 1A4A02F is a PCI card that can support up to four modules. This PCI card includes four FXO modules. The modular design of the Digium A4-series analog cards means the modules are interchangeable. In other words, remove one of the FXO modules and...

Digium A4A03F is a PCI card with four included FXO ports and echo cancellation. This PCI card is modular, meaning the FXO ports can be removed or replaced by available FXS ports. Scale the Digium 1A4A03F PCI card to your own specifications.The PCI bus...

Digium 1A4A04F PCI card features two FXO modules and two FXS modules. This PCI card is scalable to four modules and includes echo cancellation. The 1A4A04F PCI card's modules are interchangeable with available FXO and FXO modules to create a PCI card...

Digium 1A4A05F is a modular PCI card that can support up to four expansion modules. The 1A4A05F PCI card comes with four FXS modules that can be removed or interchanged with available FXO modules. This PCI card is compatible with Asterisk, designed to...

Digium 1A4A06F is a PCI card with the capacity for up to four interfaced modules. This modular PCI card comes with four FXS modules that can be removed or interchanged with FXO modules. The Digium A4-series PCI cards are designed to leverage analog and...

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...

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 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...

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...