Is SPA303 compatible with Cisco Call Manager 9.0. There is this big deployment, and we have these 66 IP Phones (SPA303) and I want to know if SIP can work on this phones so they can be integrated with the Call Manager. And, if its not posible, how ca...

Good night:A client is about to get a UC540 for 20 users. I'm considering these phones: - 8961, 8945, 6961, 6921. I wanted to know if there is complete compatibility with these models, including video capacity. Also, I want to offer the 9951 model, t...