World Telecommunications International Limited Hong Kong

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General office

World Telecommunications International Limited
Wanchai
Hong Kong
,852
Hong Kong

Phone: +852-25736786
Phone: +852-61851621

International VoIP Wholesale Provider

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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.

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