cisco phone 7921 handover time from one AP to other is high

Unanswered Question
May 29th, 2011

Hi,

I am working on a project where voice over wireless is implemented using 7921 Wireless phone and controller running on version 7.0.98.0. When I move speaking over the phone, from one AP towards another, there is voice drop for 5-6 seconds and then voice comes back.  The Client Roaming parameters for 802.11a/n are as follows.

Mode Default Custom
Minimum RSSIdBm
HysteresisdB
Scan ThresholddBm
Transition TimeSeconds


I am not facing this issue where APs are very closely located. where APs are placed little far, I have these issues. But there is no signal drop when i move from one AP to other. There is only voice packet drop. Please suggest on improving the handover time in such case. Thank you.

Regards,

Madhan kumar G

I have this problem too.
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migilles Mon, 08/01/2011 - 23:31

First, would suggest to upgrade the WLC to 7.0.116.0.

1.4(2) will have more aggressive scanning.

If 1.3(3) works better than 1.3(4) or 1.4(1), then open a TAC case and may be able to provide some dev phone code.

Sent from Cisco Technical Support iPhone App

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Posted May 29, 2011 at 3:24 AM
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