IOS XE voice service configuration refers to which concept?

• A. A single command to enable VoIP on a router.
• B. A policy for routing voice traffic through the network.
• C. The set of IOS voice features enabling VoIP call routing.
• D. A hardware driver for signaling.

Answer: (C)

IOS XE voice service configuration is the collection of VoIP features and settings that enable call signaling and routing across the network. It isn’t a single command you run to turn on VoIP, nor a simple policy for routing voice traffic, and it isn’t just a hardware driver for signaling. Instead, you configure a voice service context (for example, voice service voip) to enable signaling protocols (like SIP or H.323), select codecs, define call-control behavior, and apply related options such as QoS and media handling. This set of features provides the framework that allows VoIP calls to be established, negotiated, and routed end-to-end through IOS XE devices.