Classes of Service
The system of Classes of Service (COS) helps defining rights for one or another extension in the PBX or Centrex systems. For example, few groups require more space for storing voice messages, while other need the redirection of calls to cell phones, the third does not have to make calls outside of the office network. With the help of this system one can change and configure settings.
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.
Lookit Co., Ltd
Lookit Co., Limited is a professional Internet Telephony devices manufacturer and voice over Internet Protocols (VoIP) service provider, which established in March, 2001 at Hong Kong. The Lookit (Shenzhen) Co., Ltd is a local government certified Hi-Tech
Read moreTop countries:
United States 1294
India 440
United Kingdom 425
Canada 348
Bangladesh 338 China 142
Pakistan 134
Australia 133
Spain 123
Russia 114View all countries