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voice quality and 45xx dbl ????

Guys,

Anyone ever had problems with voice quality on VoIP with 4500 series switches and the qos dbl feature (which gets enabled by the auto qos feature)?? I have had a couple of customer complaining about voice quality and our voice team spent a lot of time investigating; I had ruled out the network infrastructure because it was all QOS enabled. The voip people came up against a blank so I looked at the network once more and disbaled dbl with hope more than anything else. Mysteriously the voice quality issues the customer was having have now disappeared.

Not sure whether a coincidence (though I have done this on two customers now) or something to with with dbl. There is nothing on this on cco.

Any ideas?

Thanks, Steve

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Re: voice quality and 45xx dbl ????

The qos dbl feature is very notorious. It does give problems similar to the one you are facing. You are better off without this feature

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