GUANGZHOU YICAI SPECIAL PRINTING CO.,LTD China

We are a manufacturer of PVC and paper printing,including Prepaid phone card,Calling card,Scratch card,
Magnetic card,Access card,Membership card,Business card,Key card,Abnormity card,3D ventricular card, Key tag,
Door-hangers,Gift card,Die-Cut stickers,Flyer,Poster,Booklet,oucher,Letterhead,Company letters, etc.

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General office

GUANGZHOU YICAI SPECIAL PRINTING CO.,LTD
TaiHe Towm
GuangZhou
GuangDong Province
China

Phone: +86-020-38275044
Site: http://www.gzyicai.cn/

Contact Person

Lichee Lu / Sr.Sales Director
Phone: +86-020-38275044

Hosted VoIP billing service provider

Not data

Gnex Technology Co., Ltd

SHENZHEN HYBERTONE TECHNOLOGY CO.,LTD

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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