CM Tel (Canada) Ltd. Canada

Established in 1990, China Motion Telecom International the Group commenced its operations in Hong Kong as a supplier of a wide-range of telecommunications products and services with extensive operations in Mainland China, Hong Kong and North America. It is a listed company on both the stock exchanges of Hong Kong and Singapore.Based on its extensive operational experiences in Hong Kong and China markets established within a decade, China Motion has built up a strong customer base and brand name and this, together the newly granted MVNO status (Mobile Virtual Network Operator) in December 2001, has enabled China Motion to expand and transform its business scopes to be an innovative, high value-added telecom service provider, with business focus on mobile-related services, IDD business and distribution and retailchain.

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General office

CM Tel (Canada) Ltd.
Ste. 1108, 150 York Street
Toronto
Ontario ,M5H 3S5
Canada

Phone: +1 416-817-6888
Site: http://www.chinamotion.com

Contact Person

Mark Xu / Carrier Relation Manager
Phone: +1 416-817-6888
Phone: +1 416-817-6888

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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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