Which of the following statements about the centralized call management network are CORRECT? (Multiple Choice)

Question

Options

• AUsers and services are configured and controlled in a unified manner on the central node.
• BIP phones on the local node can directly register with the local node.
• CAnalog users on the local node can register with the central node through the local node agent.
• DIP phones on the local node fail to register with the local node and then automatically switch to the

• A
  73% (19)
• B
  19% (5)
• D
  8% (2)

Explanation

A and C are correct because they accurately describe the core design of a centralized call management network. Option A reflects the fundamental principle: all users, services, and policies are configured and managed from the central node, eliminating the need for distributed administration. Option C is correct because analog phones lack native IP/SIP registration capability and cannot communicate directly with a remote central node - they rely on a local node agent (gateway/proxy) to represent them and forward registration to the central node on their behalf.

Option B is wrong because in a centralized model, IP phones are designed to register directly with the central node, not the local node. The local node does not act as a standalone call manager for IP endpoints.

Option D is wrong because the described failover behavior - where IP phones attempt the local node first and then switch - describes a distributed or survivable remote site architecture, not a purely centralized one. In centralized management, IP phones target the central node by design.

Memory tip: Think "Central = Control." In a centralized model, the center controls everything directly (A). Analog phones are "old school" and need a local helper (agent) to reach the center (C). IP phones, being modern, talk straight to the center - not the local node (eliminating B and D).

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