Secure voicemail access involves which combination?

• A. Authentication and encrypted signaling
• B. Simple PIN only
• C. End-to-end encryption for audio streams
• D. Unencrypted signaling

Answer: (D)

Securing voicemail access hinges on two complementary protections: proving who you are and protecting the conversation that controls access. Authentication verifies the user's identity, ensuring only authorized people can reach voicemail. Encrypted signaling then shields the control messages (the negotiation and session setup between the device and the voicemail server) so credentials and access tokens are not exposed to eavesdroppers or tampering. Without authentication, anyone could try to access messages; without encrypted signaling, those access attempts, credentials, and session details could be intercepted or forged. While protecting the audio content itself is important, it doesn’t address who is allowed to access the mailbox or how access is requested. Therefore, combining authentication with encrypted signaling provides the necessary guardrails for secure voicemail access.