Which of the following statements are CORRECT in the CDR and billing scenario? (Multiple Choice)

Question

Options

• ACDR data needs to be finally imported into the CDRServer database.
• BUsers can query CDR data on U1900 web pages.
• CIn the CDR integration network, a third-party billing system functions as the FTP client.
• DA single CDRServer can concurrently store and process CDR data from multiple IP PBXs.

• A
  13% (3)
• B
  4% (1)
• C
  83% (19)

Explanation

In CDR integration, the CDRServer acts as the FTP server, hosting the CDR files, while the third-party billing system connects to retrieve those files as the FTP client (C is correct). A single CDRServer is designed to aggregate and process CDR data from multiple IP PBXs simultaneously, making it a scalable central collection point (D is correct).

Why A is wrong: The CDRServer is an intermediary storage and forwarding system - the CDR data's final destination is the third-party billing system's database, not the CDRServer's own database. Treating the CDRServer as the final repository misrepresents its role.

Why B is wrong: The U1900 (Unified Communications server/IP PBX) generates CDR data but does not provide a CDR query interface on its web pages - CDR querying is handled through the CDRServer or the billing system, not the U1900 management UI.

Memory tip: Think of the CDRServer as a post office - the IP PBXs drop off mail (CDR files), the post office holds them (FTP server), and the billing system comes to pick them up (FTP client). One post office can serve multiple senders, but it's not the final address - the billing system is.

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