Aastra 5370ip

I would want to know if the 5370ip phone from Aastra works with asterisk (11.8.0 in my case)

Probably not, see asteriskmx.com/foros/threads/311 … n-asterisk

I never formally learnt Spanish and haven’t tried machine translating it, but it seems to say that models that contain IP in the name are proprietary, and you need ones that say SIP.

That may explain why the second hand price is so low.

Yes indeed.
It sounds like it is some proprietary protocol.
Thank you for your help.