Digium Digital Telephony Devices
Not only was Digium the first vendor of telephony interface cards built specifically for Asterisk, but it has always been the market leader, with over 50% of the world’s board business.
Digital Cards: Digium's super-reliable digital line cards connect Asterisk-based communication systems to T1, E1, J1 and ISDN-BRI interfaces.
Digital Modules (Echo Cancellation): For Asterisk users who connect to the PSTN, echo with the voice communication is possible and can be managed effectively with echo cancellation solutions from Digium.
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