Digium CTI Telephony Cards

Not only was Digium the first vendor of telephony interface cards built specifically for Asterisk, but it has always been the market leader, with over 50% of the world’s board business.

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.

  • RoHS compliant
  • Manufactured in an ISO 9001:2001 certified facility in the United States
  • Maintain an MTBF greater than one (1) million hours

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Digium 4-Port Analog Card

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

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Photo of a Digium digital telephony card

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.
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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 reducing 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.

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photo of digium voice compression card

Modules and Accessories ®

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