Sound Issue with 525G continuing after 7.4.4

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Jul 14th, 2010
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Has anyone had experience with an issue similar to this:

We recently installed a new UC560 system with 2 of the ESW switches, 8 of the 541 access points, around 30 of the 525G phones, 1 7965, and 20 7925 wireless phones.  The issue is with the voice quality on the 525G phones.  I have found numerous references to the voice quality issues on these phones through the Cisco forums that all direct you to upgrade the firmware on the phones to 7.4.4 (which is the latest release) and this has been done.  The voice quality, however, remains very muffled and hollow sounding.  This is not an issue on the 7965 phone, nor on the 7925 wireless phones, only the 525’s. 

Thanks in advance!

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Steven DiStefano Wed, 07/14/2010 - 06:43
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Something to check for, which I know was in 7.4.4 for the SPA50x and

uncertain if on the SPA525, but will check in the lab later today, is

the Deep Base Audio toggle (on/off). Try turning it off if it appears

on the phone GUI (browser to the IP address of the phone 10.1.1.x).

If that option is present it may help a little as it clips low

frequency audio).

Steve DiStefano

Technology Solutions Architect - Sales

Cisco Systems

Research Triangle Park

North Carolina, U.S.A


On Jul 14, 2010, at 6:26 AM, "stcamero"

Steven DiStefano Wed, 07/14/2010 - 10:37
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My apologies, Deep Base Audio is not available on SPA525G, but in fact SW 7.4.4 did correct all the sound issues we had seen in the past.

Steven DiStefano Wed, 07/14/2010 - 12:29
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/* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

It will be in upcoming 7.4.6

I can  unicast you the firmware for testing.

7.4.6 is currently Scheduled to be available by next week.

stcamero Wed, 07/14/2010 - 13:49
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Thanks.. that works great!


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