Voice-over-IP (VoIP) Gateway


Introduction

Instead of using conventional Public Switched Telephone Network (PSTN), VoIP uses packet switched IP data network to send or receive real-time audio streams. VoIP allows voice and data to share the same IP network such as IPLC or Internet and thus it is an alternative & economical means of long distance voice communications. A dedicated VoIP gateway allows you link up 1 or more than 2 PABXs from different regions via an IP data network. It can inter-work with traditional telephone set.



Functions & Features



Typical Connection


Typical Usage (Referring to the above diagram)

(I.) Making a call from region A to region B:

  1. Pick up the handset of any extension telephone.
  2. Dial ext. number 11.
  3. After hearing a voice prompt, press the extension number (e.g., ext. 23) in region B.
  4. The telephone with ext. 23 in region B will ring and one can start conversation.

(II.) Making a call from region B to region A:

  1. Pick up the handset of any extension telephone.
  2. Dial ext. number 21.
  3. After hearing a voice prompt, press the extension number (e.g., ext. 13) in region A.
  4. The telephone with ext. 13 in region A will ring and one can start conversation.



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