SmartNode 4630

SmartNode 4630 is a multiport ISDN BRI device from SmartNode VoIP family. It is available with 3 or 5 BRI/So port configurations, what is perfectly suitable for small and medium sized enterprises, looking for an inexpensive way to get connected to VoIP telephony services or to connect several remote offices in one network.

Additional BRI port solves many problems during integration to the VoIP network. This port can synchronize gateway and ensure errorless data and fax transfer via ISDN. With its support for line failures, port enables integration of an ISDN emergency terminal powered from the public ISDN.
4630 VoIP gateway ensures IP security features and full access routing. You can use the SmartNode as access router or CPE via broadband access, and can also get advantage from Quality of Service features that ensure an unmatched quality of voice by any gateway or IP-phone existing on the market.
SmartNode 4630 can be a wise solution for service providers or system integrators, who need VoIP product with ISDN standard characteristics and quality. Device ensures transparent integration, reliability and inexpensive installation into existing environment.

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Echo cancellation module VPMADT032

VPMADT032 echo cancellation module is meant to be used with the Digium IP telephony boards; it provides echo cancellation for configurable long "tail" of up to 128 ms (1024 samples) simultaneously for all ports of the board. All IP-PBX Asterisk servers, connected to the telephone network (PSTN) have one common problem, which is "hybrid echo" - echo obtained due to the difference in the load-wire and four-wire telephone circuits. Echo appears as a distorted reflection and a detainee of the caller's voice, who is subscribed to IP-PBX Asterisk while talking to PSTN subscribers.

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