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Phone Proxy Mode provides the capability of SIP based IP phones and softphones on Public or external networks to registers register with or through the Orchestrator to a customer PBX on a private or internal network.
Conceptually Phone Proxy Mode is akin to a Termination Customer Trunk Group where the only signaling method is SIP based registration and the communication protocol is limited to either UDP, TCP, or TLS. To support multiple protocols simple simply create a Phone Proxy Mode Transport Proxy for each protocol that is to be used.
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