That would be a no for ip-to-ip phone calls. The only causes for this that I could think of are a) the user is holding the handset several feet away from their mouth; b) they are whispering; or c) there is a bug in the firmware of the phone (unlikely).
As for IP-to-PSTN calls, you can amplify the volume using the input gain command on the voice-port in IOS.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
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
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...