VASC Company Vietnam
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General office
VASC Company
33 Thai Ha
Hanoi
,84
Vietnam
Phone: +84942422422
Site: http://vnpt.com.vn/en-US/About-VNPT/Organization-Structure/vnpt.
Contact Person
Vu Tung / Sale Executive Manager
Phone: +844 37722728
Phone: +84942422422
VASC Company
33 Thai Ha
Hanoi
,84
Vietnam
Phone: +84942422422
Site: http://vnpt.com.vn/en-US/About-VNPT/Organization-Structure/vnpt.
Contact Person
Vu Tung / Sale Executive Manager
Phone: +844 37722728
Phone: +84942422422
- Internet Telephony Service Provider
- Internet VoIP and Video Conferencing Service Provider
- Network Service Provider
- Voip Termination ISP
- Termination
- Cisco Systems
- Billing system of own development
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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