We have a number of Cisco SPA303 IP phones in our office. It is an incredibly basic set up, we're just a small business with less than 20 employees.
We configure the setup via the SPA303 Configuration Utility accessible via the IP address.
I would like to know how to bar/block incoming calls into the network but I am not getting anywhere trying to find out how reading the Cisco documentation. I've seen something about configuring an h.323 gateway in order to achieve this but I don't know if this applies for the phones we have nor how to actually set one up.
Could anyone explain (as basic as possible) what we need to do in order to be able to block incoming calls please?
Thanks in advance.
