extension mobility and wireless IP Phone connectivity

Unanswered Question
Sep 30th, 2008
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plaese to tell me if i will cover building of two floors with 6 wireless access points,

does the user that hold Wireless IP Phone face the choise of which Wireless access point to connect for or the wireless access point be transparent and the wireless IP phone is connected to the strongest access point.

the second question is extension mobility need any components other than callmanager and ip phones

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Rob Huffman Tue, 09/30/2008 - 05:30
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Hi Shaymaa,

The decision for which AP the wireless phone connects to is NOT determined by the user. This is transparent to the user completely.

***Roaming is a client decision (in this case the client is the IP Phone 7920 or 7921). The client is responsible for deciding it needs to roam, and then detecting, evaluating, and roaming to an alternative AP.


Note Roaming is a client decision. WLAN standards bodies (such as the IEEE) and industry bodies (such as the Wi-Fi Alliance) do not specify when a client should roam, or how the client determines to which alternative AP it should roam. Each vendor's roaming algorithms are proprietary and are not generally published.

Voice over WLAN Roaming


Voice over WLAN Introduction


Extension Mobilty does not require any additional components;

Extension Mobility

From this doc:


Hope this helps!



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