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               Applications 
             
              Mobile 
              Workers 
             
              Utilizing a laptop with Microsoft NetMeeting, a mobile worker can 
              make a Voice over IP call back to the corporate office. This allows 
              the mobile worker to utilize the Internet to check voice mail, call 
              co-workers on the corporate PBX, and get a dial tone from the PBX 
              to make off-network calls, all for free. 
              
              
            The H.323 protocol is what allows 
              this solution to work. It provides complete interoperability among 
              third-party VOIP solutions. H.323 is the cornerstone technology 
              for the transmission of real-time audio, video and data communications 
              over packet-based networks.   | 
        
         
         
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