The Edison and the images for this board use systemd to handle the services. You can check the services in /lib/systemd/system
For the sshd service you are looking for, you can check the configuration of it by running cat /lib/systemd/system/sshd.socket
Start the service: systemctl start sshd.socket
Status of the services: systemctl status sshd.socket
Hope this helps,
I also found out that you need to run "configure_edison --setup" first.