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sound problem in 6921 ip phone

ankur
Level 1
Level 1

Hello

There is a 6921 ip phone in the network.when we communicate form one ip phone to another ip phone then some sound comes into the ip phone.sounds like air.it is too noisy.I want to know that how can i cancil this sound.I have also enabled qos but the problem is still same.

Please help.

regards

Ankur Tyagi

1 Reply 1

sedivimark
Level 1
Level 1

Hi There!

We might have experienced the same problem at a customer last week.

It occurs at a few 6921 phones randomly (4-5 out of 100), and the symptom is slightly the same.. no audio can be heard.

Network traffic capture from the phone's PC port (span to PC port) shows unusual high traffic, with lots of dupACKs and out-of-order packets.

I'll try firmware upgrade today, and return with any new thoughts.

regards,

Mark

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