VOIP PI CO., LTD. China

VOIP PI Co., Limited. is a one of the leading asterisk telephony card manufacturer in china, with passion in supplying open souce hardware.

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General office

VOIP PI CO., LTD.
HUAQIANGBEI
SHENZHEN
GUANGDONG ,518000
China

Phone: 86 755 26598741
Site: http://www.voippi.com

Contact Person

Felice GONG / SALES MANAGER
Phone: 86 755 26598741

Hardware

E1/T1

Digium

IP PBX

biopharmchem2016

TeleAlpha

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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