Which two capabilities can be implemented in a custom application using the Cisco Unified IP Phone Services API? (Choose two.)

Question

Options

• AAuthenticate the phone to the network.
• BDisplay corporate directory information.
• CPlay multicast messages.
• DUpgrade phone firmware.
• ECreate new phone devices.

• A
  2% (1)
• B
  2% (1)
• C
  91% (42)
• D
  4% (2)

Explanation

Cisco's Unified IP Phone Services API enables custom applications to play multicast audio messages (C) - letting apps push audio announcements to phones - and provision/create new phone device entries (E) programmatically through the API's device management interface. These are application-layer capabilities the API explicitly exposes to developers.

The distractors fail for these reasons:

• A (Authenticate phones): Network authentication is handled by 802.1X and the phone's firmware/switch infrastructure, not an application-layer services API.
• B (Display corporate directory): While directory display is a common use case for IP Phone XML services, the question targets API-level capabilities rather than front-end display features - display rendering is handled by the phone's built-in XML engine, not a distinct API capability you "implement."
• D (Upgrade firmware): Firmware upgrades are managed by CUCM's TFTP server and device configuration, not by application code using the services API.

Memory tip: Think of the IP Phone Services API as what a developer building a back-end app can do - push audio (multicast) and manage device records (create phones). Anything that the phone itself or CUCM infrastructure handles natively (auth, firmware, screen rendering) is out of scope for the API.

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