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        Telecom Canada
        
        
        
        
        SIP Trunking Services
        
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        Telecom Canada is a division of Telmaster Consulting Inc ® All rights reserved
        
        
        
        
        
        The below diagram illustrates how SIP is conected with a an existing PSTN
        
        
        
        Telco on-the-go
        
        Today's phones
        
        
        Session Initiation Protocol or SIP, is a connection service offered by an Internet 
Telephony Service Provider or ITSP. The service connects a company's PBX system to an 
existing telephone system infrastructure, or PSTN, via Internet using the SIP VoIP standard.