Asterisk compatible with Cisco 7940/7960 SIP phones?

Is Asterisk compatible with most of Cisco’s later model SIP phones? I just want to set up a SIP phone for me for my home business. I found a used one and wanted to make sure it was compatible before I bought it.

Yes, I use 7940s and 7905s almost exclusively at home and work, and we use 7905s and Linksys SPA941s in customer installations