First Look: Digium TE133 and TE134 Single Span Telephony Cards

November 7, 2013 by Taylor Hamp

The TE133 and TE134 are the most recent single span telephony card solution from Digium, and VoIP Supply gives you a first look at the Asterisk company’s cards.

What is it?

The Digium 1TE133F PCI-e and Digium 1TE134F PCI are new telephony cards for seamless PTSN connectivity to VoIP. These single span cards use state of the art technology to increase overall consistent phone quality and system performance, including features such as toll-bypass adjuncts for legacy TDX PBXs, SIP trunk interface for legacy TDM systems and small call center ACDs with T1/E1 trunks.

Digium te134

From these single T1 digital telephony cards, you can expect:

  • Up to 24 (T1/J1) or 30 (E1) simultaneous calls
  • Selectable T1, E1 or J1 Mode / Half-Length, Half-Height, Digital Card
  • PCI-Express (TE133)
  • PCI (TE134)
  • One (1) RJ48 Interface Port
  • Protocol support includes: ISDN PRI, Robbed-Bit, CAS
  • Built-in 128ms Octasic DSP hardware echo cancellation
  • 5 year warranty
  • Risk-free ESP guarantee

Digium TE133 and TE134 cards are designed to support T1/E1/PRI environments and industry standard telephony protocols, mainly Primary Rate ISDN protocol families for voice in North America and Euro standards. Octasic DSP hardware echo cancellation is built directly into the cards which removes the task of echo cancellation from the system’s CPU card, improving efficiency in your VoIP system.

As these cards are created by the makers of Asterisk, you can feel confident about 100% interoperability, straight from the source. Digium wants you to feel comfortable with your purchase, so even though we all know you’ll love it, Digium offers a no-risk ESP guarantee that if qualifying Digium products don’t perform 100% as designed, Digium will refund the product. That’s confidence.

Who is it for?

The TE133 and TE134 are designed for Asterisk and it’s open source drivers, so basically, anyone with an existing legacy system looking to upgrade to VoIP. Digium cards have been tested with major server hardware platforms like Dell, HP and IBM, as well as hardware platforms with chipsets like AMD, Intel, VIA and Nvidia. Being designed by Asterisk, Digium cards are compatible with all version of Asterisk using the DAHDI driver framework. Asterisk and DAHDI are available for free from the website.


Digium 1TE133F MSRP $730.00
Digium 1TE134F MSRP $730.00


  • Thanks for the article. Are these pretty much ‘plug and play’ cards or is there much hassle with drivers and software?

    • Taylor Hamp

      Hi Adam,

      Thanks for the read!

      I wouldn’t say it’s a ‘plug and play’ card, but I wouldn’t say the configuration is overly complicated. There is some downloading of software needed. If you check out the ‘Technical Specs’ tab on either the Digium TE133 and TE134 pages on VoIP Supply you’ll see several PDF documents such as Quick Start Guides and User Manuals from Digium available. You can download those and check in greater detail to see if the cards are more what you’re looking for, or else get an idea of what kind of set-up they’ll require.

      And of course, you can always call us at 1.800.398.8647 if you’re looking for something specific! Our VoIP Experts are ready to help out.

      Hope this helps!


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