My company recently switched over to Cisco CP=9971 VOIP phones with video and every time I am talking to someone with a headset, they tell me I have a bad echo. I have tried the following and people still tell me I have a bad echo:
When using the headset button and plugging the headset into the headset jack on the back of the phone, if I adjusted the mic volume (both high and low) on my headset
Plugging the headset cord in the receiver jack on the back of the phone
If I use the receiver plugged into the headset base, there is no echo
When I only use the receiver, there is no echo. Also, when using my headset, if I turn the receiver volume down to the lowest setting, then there is no echo, but I cannot hear the person on the other end of the line.
I did some research and found that the 'Conceal Ratio' may need to be adjusted, however, I am not an admin, so I can't change that.
My headset is a Plantronics CS55. I have already checked their web site and have performed all recommended solutions using their FAQ and support site.
Does anyone have any recommend solution where I can use my headset, be able to hear the person on the other end and they not hear an echo?
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
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