On the SPA 301 IP Phone, is there a way to disable to volume control button? I'm going to be installing many of these phones in a public setting (Help phones in classrooms) and want to make the phone as dummy-proof as possible. The concern is that if someone presses the volume button a number of times and lowers the handset volume to almost 0, later users will not be able to hear, and think the phone is dead. I've searched the Cisco documentation and done web searches, with no luck. If there isn't a software setting I can change, the next step is to take the phone apart and physically remove the button!
An alternative would be to have the SPA301's peridically resync to a provisioning server with the configured volume settings. If a user were to change the volume setting on the phone then after the periodic time the volume setting could be restored to the configured value from the provisioning server.
Configure Multicast Paging on the Cisco IP Phone 7800 Series or 8800 Series Multiplatform Phone
The Cisco IP Phone 7800 and 8800 Series Multiplatform Phones provide voice communication over an Internet Protocol (IP) network...
Add Call Park on a Cisco 7800 or 8800 Series Multiplatform Phone Key Expansion Module
Call park allows the user of the phone to put an incoming call on hold so that the call can be retrieved on another phone. A call is park...