Telephony Cards

Digium offers a full line of high quality analog and digital interface cards to connect your IP PBX, IVR, VoIP Gateway, or custom telephony solution to the public telephone network. Digium also has hybrid cards, voice compression cards, modules, and accessories built specifically for Asterisk.

Telephony Cards There are 15 products.


  • Analog Cards

    Digium analog telephony cards are high-performance, highly reliable and cost-effective interfaces for POTS lines to your Asterisk solution. Multiple applications can be created to satisfy the business needs of any organization when using Digium analog cards in concert with Asterisk software, the Linux® operating system and standard PC/server platforms.

  • Digital Cards

    Digium's super-reliable digital line cards connect Asterisk-based communication systems to T1, E1, J1 and ISDN-BRI interfaces.

    • RoHS compliant
    • Manufactured in an ISO 9001:2001 certified facility in the United States
    • MTBF greater than one (1) million hours
    • 5 year hardware warranty
    • Backed by Digium’s Exceptional Satisfaction Program (ESP)
  • Hybrid Cards

    The Digium Hx8 Series are high-performance, cost-effective hybrid analog and BRI telephony interface cards providing the capability to seamlessly integrate mixed-mode environments in a single device. Use the telephony card selector to identify the card that fits your requirements.

  • Voice Compression

    Get more out of Asterisk by offloading codec conversions to Digium's TC voice compression cards. Software transcoding takes up host CPU cycles and can limit the capacity of your server. TC cards are dedicated hardware transcoders; they drastically reduce the bandwidth consumed by each call without ever touching your host CPU. Our voice compression cards are capable of compressing/decompressing 120 channels of G.729 or 92 channels of G.723.1.

  • Modules and Accessories

    Add-on hardware modules and accessories for analog and digital cards.

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Showing 1 - 12 of 15 items
Showing 1 - 12 of 15 items