AddPac AP-GS1004A

AddPac AP-GS1004A is one of the models of inter-network VoIP GSM gateways, through which, it is possible to format a single network unit and to use it for VoIP-telephony, analog communication lines and GSM-network.

By using AddPac AP-GS1004A, you can send traffic to any destination of connected lines. The main features of the device include support for four simultaneous GSM calls, the ability to connect to networks of various types, as well as the simultaneous operation of the SIP, H 323 and MGCP protocols, without the need to update the software.
Automatic dialing can significantly simplify a task of dialing most commonly used phone numbers. With customizable black and white lists, one can set appropriate restrictions for specific numbers as well as to complement the privileged user group with added services.

Providers in database: 6433

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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