Digium Telephony Cards



Since 2001, Digium® has designed, manufactured, and sold PC-based telephony cards for extending the functionality of Asterisk® to the Public Switched Telephone Network (PSTN). All Digium analog 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, as a globally minded company, ensures that all Digium analog interface cards maintain telecom, safety and emissions certifications permitting their use in Australia, Canada, the European Union, and the United States.

Digium Analog Cards

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.

Digium Digital Cards

Digium digital cards are high-performance, cost effective, digital telephony interfaces. Digium digital cards in the TE series support both E1 and T1 environments. The environments are selectable on a per-card or per-port basis. This feature enables signaling translation between E1 and T1 equipment, and allows inexpensive T1 channel banks to connect with E1 circuits. The bus-mastering TE cards improve I/O speed over slave-only architectures, resulting in reduced CPU usage and increased card density per server. The cards provide the power to interconnect traditional telephony systems (legacy PBX) with emerging Voice-over IP (VoIP) technologies.