I´ve gotten some complaints from a customer about the microphone on the CP524 handset, their customers have trouble hearing them from time to time. Is there any way to increase the "microphone volume" on this phone?
Here is the document. Please let us know if this helps:
The CLI David is referring to is voice port specific (input gain, output attenuation). The gain the Product Manager mentioned is a configuration parameter on the IP phone itself. You can connect via your browser to the IP phone and experiment with these values. I am in the process of creating a document to explain these steps in detail, but you might want to give it a shot by yourself.