Gigaset stopped online services

Gigaset stopped all online services due to insolvency.

I have used the online services from the phone to get information about the missed calls. Does anybody know if there is a possibility to access directly such data from the base station of the phone system? I have a Gigaset C430A GO.
Any idea would be helpful.

Well, I see two possible methods:

  1. use WireShark to see which server it’s talking to and try to redirect that traffic to a server you own where you can now store the information
  2. use NMap to map the ports the device may have opened and hopefully find one that has some sort of an API.

In all instances, it involves a bit of networking reverse engineering.