The engineer must ensure that the new SIP phones always try to set up Early Offer calls and display Fully Qualified Domain Names in SIP URIs called or received. Where are these options configured?

Question

Options

• APhone Device settings. Protocol Specific Information section
• BSIP Security Profile settings
• CPhone Device settings. Model Specific Information section
• DSIP Profile settings

• A
  7% (2)
• B
  4% (1)
• C
  4% (1)
• D
  86% (24)

Explanation

The SIP Profile in Cisco UCM is the correct location for SIP-protocol-specific call behavior settings. 'Early Offer' support (sending SDP in the initial INVITE rather than waiting for a 200 OK) and the option to display Fully Qualified Domain Names (FQDN) instead of IP addresses in SIP URIs are both controlled within the SIP Profile configuration. The SIP Profile is assigned to each SIP phone device and governs how SIP signaling behaves. Phone Device settings control hardware/model-specific options, and the SIP Security Profile governs authentication and transport - neither controls Early Offer or FQDN URI formatting.

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