[cisco-voip] 7921G suffering from dropped calls while roaming between AP

[Jason Aarons (US)]

Also don't forget about the WLC Config Analyzer on cicso.com, you upload a show run and it give feedback.

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Paul Wozney
Sent: Tuesday, January 25, 2011 12:46 PM
To: Ki Wi
Cc: Cisco VoIP List
Subject: Re: [cisco-voip] 7921G suffering from dropped calls while roaming between AP

> My colleague actually troubleshoot this issue and he changed the wireless phone to scan for channel 1/6/11 only (on b/g) , we disabled the A as it seems like we have a poor coverage with 802.11a.

I'm not sure if this will help, but here goes.  It sounds like you don't have extensive overlap with your APs, so you should make sure you have the feature 'aggressive load balancing' disabled.  This is general wireless best practices.
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a0080810880.shtml#t6

And it is a specific requirement for WLANs providing voice access to the 7920/7921s:
http://www.cisco.com/en/US/docs/wireless/controller/6.0/configuration/guide/c60ccfg.html#wp1902039

---
Paul Wozney
Network Consultant
phone: +1 604-629-9975
toll free: +1 866-748-0516
email: paul at wozney.ca
web: http://wozney.ca

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