Which of the following technologies is critical for understanding ATandT's network architecture?

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Multiple Choice

Which of the following technologies is critical for understanding ATandT's network architecture?

VoIP is central because AT&T’s network is fundamentally IP-based, so voice traffic travels as data packets across the same backbone that carries data. Understanding voice in this way means you see how calls are signaled, routed, and billed using IP protocols (like SIP) and how the network handles QoS, sessions, and interconnection with the traditional PSTN through gateways and the IMS/VoLTE architecture. This perspective also shows why data and voice share infrastructure, enabling unified services across cores, edges, and roaming. The other options focus on short-range or radio-access technologies and don’t by themselves explain how the core network is designed to carry voice and data over IP.

VoIP is central because AT&T’s network is fundamentally IP-based, so voice traffic travels as data packets across the same backbone that carries data. Understanding voice in this way means you see how calls are signaled, routed, and billed using IP protocols (like SIP) and how the network handles QoS, sessions, and interconnection with the traditional PSTN through gateways and the IMS/VoLTE architecture. This perspective also shows why data and voice share infrastructure, enabling unified services across cores, edges, and roaming. The other options focus on short-range or radio-access technologies and don’t by themselves explain how the core network is designed to carry voice and data over IP.

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