300-070 Question #139: Real Exam Question with Answer & Explanation

The correct answer is B: The IP phones will need to be reset so that a new configuration file can be downloaded from the. IP phones receive their CUCM group (primary, secondary, and tertiary server assignments) from their configuration files downloaded from the TFTP server at boot time. When the server assignments in a CUCM group are changed, those changes are written to the database and reflected i

Question

When a Cisco Unified Communications Manager group has its primary, secondary, and tertiary servers changed, how are those changes propagated to the IP phones registered to the group?

Options

AThe IP phones will automatically register with the new primary server.
BThe IP phones will need to be reset so that a new configuration file can be downloaded from the
CThe primary Cisco Unified Communications Manager server automatically pushes a new configuration
DThe device pools will need to be edited so that the new Cisco Unified Communications Manager

Explanation

IP phones receive their CUCM group (primary, secondary, and tertiary server assignments) from their configuration files downloaded from the TFTP server at boot time. When the server assignments in a CUCM group are changed, those changes are written to the database and reflected in updated configuration files on TFTP. However, currently registered phones are unaware of the change until they re-download their configuration file. Therefore, the phones must be reset (either manually or via a bulk reset), which causes them to re-register, contact TFTP, download the new configuration file, and then register with the updated primary server. The system does not automatically push configuration changes to active phones without a reset.

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