An engineer must enable 5 GHz on the voice for Cisco 7925 phones. Which change must be made in the TPC configuration page?

Question

Options

• ASet the TPC version to TPCv2
• BChange the power level method to on demand
• CSet the minimum transmit to 8dBm
• DSet the maximum transmit to 17dBm

• A
  5% (2)
• B
  7% (3)
• C
  12% (5)
• D
  76% (31)

Explanation

The Cisco 7925G wireless IP phone is a dual-band device that supports 5 GHz (802.11a/n), but it has a hardware-limited maximum transmit power of 17 dBm on the 5 GHz band. In the Cisco WLC TPC (Transmit Power Control) configuration page, if the maximum transmit power ceiling is set below 17 dBm, the 7925 phones will be unable to transmit at their needed power level on 5 GHz, effectively preventing operation on that band. Setting the maximum transmit power to 17 dBm ensures the TPC algorithm allows the 5 GHz radio to reach the level the 7925 requires. TPCv2, on-demand power methods, and the minimum transmit setting do not directly gate whether the 7925 can associate on 5 GHz.

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