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Community Member

Migration to WLC Problems whit Phone 792X

Hi,

We have migrated from a Autonomous Wireless Solution (1200 AP) to Centralized Wireless LAN Controller (WLC 5500). The WLANs work fine, but the call on the Wireless Phone 7921, are experiencing problems, sound in one way, drop of calls, problems no present  previously with the autonoums solution. The QoS of the Voice WLAN is set to Voice, but the problems  persist. Any Suggestion ??

5 REPLIES
Hall of Fame Super Gold

Re: Migration to WLC Problems whit Phone 792X

What is the firmware of your phone?

Community Member

Re: Migration to WLC Problems whit Phone 792X

The firmware used by the phones are: CP7921G-MFG-C.2.LOADS

Hall of Fame Super Gold

Re: Migration to WLC Problems whit Phone 792X

Settings > Model Information > and under App Load ID what does this say?

Bronze

Re: Migration to WLC Problems whit Phone 792X

It sounds RRM on the WLC may have changed your power levels on the APs.  One way audio is almost always caused by the power of the AP being set higher than the power on the phone.  Have a look at this deployment guide.

http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7921g/6_0/english/deployment/guide/7921dply.pdf

Community Member

Re: Migration to WLC Problems whit Phone 792X

The firmware is: cp7921gmfga.7.loads

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