Does changing IP disturbs connection with server?

I generally connect to my institute server using ssh user@ipaddress. It works fine.

Recently, I change IPv4 network address, network mask and Gateway in my Ubuntu system in order to get internet. I didn't change proxy settings on my system.

After modification, I cannot able to connect to the institute server using ssh user@ipaddress. The error is as follows

ssh: connect to host xxx.xx.xx.xx port xx: Connection timed out

Is it due to the change I did on my system or is it due to the issue from server side?

I also pinged to ip address using ping ipaddress. It is working properly