Digium® digital cards are high-performance, cost effective, digital telephony interfaces. With the combination of Digium hardware and Asterisk software, numerous telephony configurations are possible. From the traditional PBX to VoIP Gateways, Digium solutions are paving the way for a new generation of worldwide communications. All Digium E1/T1 interface cards have a built-in CSU/DSU and may be connected directly to the E1/T1 physical interface.
Combined with Asterisk, the Open Source PBX, these cards provide an interface to traditional telephony equipment, such as channel banks and provider T1 /E1 lines. Asterisk can extend the capabilities of the phone network, by acting as a bridge between traditional telephony systems and Voice over IP equipment.
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