1stfone Inc. Canada

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General office

1stfone Inc.
4998 de Maisonneuve W.
Montreal
Quebec ,H8Z 1N2
Canada

Phone: 514-266-2744
Site: http://www.1stfone.com

Contact Person

Operations Operations / Operations
Phone: 514-266-2744

International VoIP Wholesale Provider
Internet Telephony Service Provider
VoIP Billing Software Provider
Voip consulting

Billing Software
Call Routing VoIP Solutions
H.323 Softswitch & CPE
H.323 VoIP Gateway
H.323 Wireless/ GSM VoIP Solutions
Outsourced Billing
Partnering for Origination and Termination

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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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