Zhengzhou Great Electronic Tech Co.,Ltd China

We are specialized in manufacturing IP phone and IP camera. Contact me if you need, skype: lxhzspy

We are a professional manufacturer of VOIP products including IP phones and ATAs. We offer simple phones with cheap prices.ODM&OEM can also be supported. Email: sales@great-elec.com msn: lucyg-reat@hotmail.com Skype: lxhzspy

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General office

Zhengzhou Great Electronic Tech Co.,Ltd
8th Floor Building68,Headquarters, No.1 the Cuizhu Street high-tech development Zone，Zhengzhou
Zhengzhou
Henan ,450007
China

Phone: +86-371-67896158
Phone: +86-371-67896128
Site: http://www.great-elec.com

Contact Person

Lucy Lu / Sales Manager
Phone: +86-371-67896128(602
Phone: +86-13838511830

International VoIP Wholesale Provider

PC to Phone, Phone To PC, Phone To Phone, Project Mangement Services, Termination, Web Call, Web To Phone

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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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