Since 2001, Digium® has designed, manufactured, and sold PC-based
telephony cards for extending the functionality of Asterisk® for TDM to
VoIP gateways and voice processing. All Digium digital cards are RoHS
compliant and manufactured in an ISO 9001:2001 certified facility in
the United States. Each Digium card is backed by a five (5) year
hardware warranty as well as our Exceptional Satisfaction Program (ESP).
Digium Analog Card (FXO/FXS)
Digium®
analog cards were created for connecting analog telephones and analog
POTS (Plain Old Telephone System) lines to the PSTN through a PC. With
these cards, users can transport calls from POTS to POTS, POTS to PBX,
or POTS to VoIP. Using one of our analog cards in concert with Digium's
Asterisk® software, standard PC platforms, and the Linux® OS, one can
create telephony solutions capable of satisfying the needs of business
applications with industry-leading quality. Digium's analog cards
utilize patent pending VoiceBus™ technology. VoiceBus technology allows
these cards to use an industry standard, bus-mastering interface as
found in millions of PCs worldwide. VoiceBus maximizes system
compatibility and prevents system conflicts.
To support
our analog interface cards, Digium manufactures analog modules for both
Foreign Exchange Station (FXS) extension-side interfaces and Foreign
Exchange Office(FXO) trunk-side interfaces. These modules are built
both in single-port, for smaller installations, and quad-port, where
density is important. The analog cards, with their interchangeable
single and quad FXS and FXO modules, can eliminate the requirement for
separate channel banks or access gateways. Digium's commercial,
toll-quality High Performance Echo Cancellation (HPEC) software is
available to our analog customers at no additional cost. The optional
VPMADT032 hardware echo cancellation module provides the same
toll-quality as HPEC, but without the performance impact of a software
based solution. Scaling of an analog card solution is accomplished by
adding additional cards.
