How to configure cisco cp-6921 and Asterisk to work with each other?

Question

Asterisk

I have never worked with asterisk before. And then there was a need to bind cisco cp-6921 to the asterisk. I can’t figure out how to reflash the phone itself so that it works with the asterisk and what needs to be written in the asterisk itself.
Thank you.

Answer 1

To ask a question, you need to know half the answer.
Google for help or contact a specialist.
Found on request "Asterisk cp-6921":
https://habrahabr.ru/post/177947/
www.linux.org.ru/forum/admin/8917153
https://zadarma.com/ru/support/instructions/cisco /...
etc.