What is a capability of the Cisco IP Phone Services API?

Question

Options

• AIt uses SOAP for all communication between clients and phones.
• BIt uses the XML schema file to define the behavior of the service.
• CIt bulk updates multiple phones with new firmware.
• DIt creates a DNS record in the server hosting for the IP Phone Services.

• A
  8% (3)
• B
  87% (34)
• C
  3% (1)
• D
  3% (1)

Explanation

Option B is correct because the Cisco IP Phone Services API uses an XML schema file to define the structure and behavior of custom phone services - the API is XML-based, and the schema governs what elements and attributes are valid in service responses rendered on the phone display.

Why the distractors are wrong:

• A is wrong because Cisco IP Phone Services uses plain XML over HTTP, not SOAP - SOAP is a separate protocol used in other Cisco APIs like AXL.
• C is wrong because bulk firmware updates are handled by CUCM's Device Defaults and firmware load management, not the IP Phone Services API.
• D is wrong because the IP Phone Services API has nothing to do with DNS record creation - DNS is managed separately at the network/infrastructure level.

Memory tip: Think of IP Phone Services as a mini web server for your phone - it speaks XML over HTTP, not SOAP, not firmware pushes. The XML schema is the "contract" that defines what your service can say to the phone. "Schema defines behavior" = B.

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