The TE435 quad span digital interface card supports 96 (T1 / J1) or 120 (E1) connections to PSTN trunks over two spans (digital circuits). Optional hardware echo cancellation is available with the VPM128 module.
Digium's quad span digital interface cards support 96 (T1 / J1) or 120 (E1) connections to PSTN trunks over four spans (digital circuits). Built exclusively for use with Asterisk and Asterisk-based communications systems, the quad span digital cards provide the best value in digital connectivity.
Quad span digital cards are available in PCI and PCI-Express form factors. All quad span models can be combined with an Octasic DSP-based echo cancellation module from Digium to provide effective hardware echo cancellation across all channels.
Digium cards are compatible with all versions of Asterisk using the DAHDI driver framework. Asterisk and DAHDI are available for free from the Asterisk.org website. All cards include a five (5) year warranty and are eligible for Digium's Exceptional Satisfaction Program (ESP) risk-free Quality Guarantee.
Digium provides case-based e-mail and phone support from Monday-Friday, 7am-8pm, CST/CDT (GM -6/-5).
In addition, Digium provides online documentation and knowledge base articles accessible from its website.
Other community-based support offerings are available including online mailing lists, an IRC channel and forums.
For links to each, please visit the Digium website
All new Digium telephony cards come with a 5 year warranty and are backed with Digium's Exceptional Satisfaction Policy. See Digium's website for more information about product warranties.
Digium®, Inc., the Asterisk® Company, created and is the innovative force behind Asterisk, the most widely used open source telephony software. Since its founding in 1999 by Mark Spencer, Digium has become the open source alternative to proprietary communication providers, with offerings that cost as much as 80 percent less. Digium offers Asterisk software free to the open source community and offers Switchvox, Digium's Unified Communications solution to power a broad family of products for small, medium and large businesses. The company's product line includes a wide range of telephony hardware and software to enable resellers and customers to implement turnkey VoIP systems or to design their own custom communications solutions. At Digium, we're changing the way businesses communicate.
Digium offers certification of selected products to ensure their interoperability with Certified Asterisk as well as Digium's other products. A Digium certified product provides an assurance of quality and interoperability of the product with Asterisk.