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Tag: Vo-WiFi

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Voice over Wireless LAN ~ Hype Vs Reality
CRoeckl

Voice over Wireless LAN (also known as VoWLAN or VoFi) is currently one of the hottest topics among CIOs and enterprise technology professionals. This shouldn’t be surprising given that VoFi straddles two of the most successful technology trends of the past several years - the rise of 802.11 based wireless LANs and voice-over-IP (VoIP). However, VoFi isn’t simply riding the coat tails of its forbears. Wireless voice deployments are surging because VoFi is able to resolve real problems more effectively, and at a lower cost, than those options being used today.

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Equalize Power with VoWLAN Phones

I've been doing some testing with Cisco 7920 wireless IP phones, and I've found that it's very important to equalize the transmit power on the phone and access point. If this is not done, then you'll likely have areas within the facility where audio only goes one direction. For example if the phone is set to 20mW and the access point is set to 100mW, then there will be areas where a connection is possible, but transmissions from the phone to the access point may not make it through (but they will in the opposite direction). As a result, be sure to set the phones and access points to the same transmit powers.

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