Getting hissing noise while keeping the voice mail on 7975G IP Phone

Unanswered Question
Jun 2nd, 2008


We are getting hissing noise during keeping the voice mail.It starts after 7-8 seconds while keeping the voice mail.

It is happening between 7975G IP Phones.

Please suggest me to come out from this problem.


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ouhakheme Mon, 06/02/2008 - 05:52

We had a similar situation, what version of CallManager are you running?

ouhakheme Mon, 06/02/2008 - 05:55

Did you recently upgrade to 5.1.3? Our issue ended up being a bad stick of RAM on our system. Do you see any warning lights on the server? Mon, 06/02/2008 - 06:04

No, we are not upgraded but we are planning to upgrade it to 6.1.2

I am not getting any warning lights on CCM servers.

This is not happening on 7941 phones;only on 7975G.

gogasca Mon, 06/02/2008 - 19:21

Please update the phone to latest firmware in CCO first.

We are working with DE team to release some new firmware soon to address CSCsm85908 Mon, 06/02/2008 - 20:20

Thanks for your reply. Is this firmware is having bug?

Currently the firmware which is running on 7975 is: SCCP75.8-3-3SR2S

Thanks & Regards,


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