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Terminology
Un-initialized Device: A device without VoIP client software.

Non-service-initialized Device: A device for which there is no valid service contract with a provider of the services. Other terms: "un-activated", "un-provisioned”, “unbranded”, “non-service-initialized” device.

Unauthenticated Emergency Service: The term "unauthenticated emergency services" refers to the case where an emergency caller does not have credentials (e.g., no SIM card, no username and password, no private key) to either attach to network or for usage with a VoIP service or both. Still, the device is granted (limited) access to perform emergency calling. It is important to differentiate between the unavailability of credentials for network access and for VoIP access as the network provider and the VoIP provider are often distinct entities and therefore the user might have different credentials with the two.

PPT Version