I have 4 x Cisco 7911 VOIP phones to get rid of. These are all 48V POE powered and boot using tftp. It’s a bit of work to set them up but you can get them to talk VOIP - I have the files on my tftp server still.
I’ll take them Tom, Thanks! let me know if you want me to pick them up from your place or from vhs. And I’ll need the boot files too Thanks! H