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VoWLAN

VoWLAN. Antenna Choice. A standard ceiling mount diversity antenna deployment is generally best Generally Provides the clearest path between handsets and AP It is difficult to get even coverage in high gain antennas Greater coverage is also less call capacity per given area.

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VoWLAN

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  1. VoWLAN

  2. Antenna Choice • A standard ceiling mount diversity antenna deployment is generally best • Generally Provides the clearest path between handsets and AP • It is difficult to get even coverage in high gain antennas • Greater coverage is also less call capacity per given area

  3. WLAN coverage considerations • The AP coverage design needs to be done to match the performance of the clients and the applications they run • Determine the RF coverage of all the clients that are going to be used in the WLAN • Use data sheets to find the clients antenna gain • Use data sheets to find data rates and receiver sensitivity • Use data sheets to find channels and transmit powers • Determine what other applications and clients share the WLAN • Determine what interferes share the WLAN

  4. Cell Edge Design • Cell edge of ~67 dBm, and 20% overlap between cells are the most critical parameters • 19dBm separation is difficult to achieve in most cases

  5. DTPC is important • It sets the same transmit power on the AP and on the phones • The Unified Controller advertises it’s transmit power for the clients to learn • Prevents one-way audio • i.e., RF traffic is only being heard in one direction

  6. Q & A

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