WMS Settings

Convert to: epsg:4326

You can find the supported epsg coordinate systems here:
C:\Program Files(X86)\Anadelta\Tessera\External\Proj\share\nad .
You can also modify this file to add a non supported system.

Some supported epsg coordinate systems examples:
Cyprus:
Project coordinate system: epsg:6312

Romania
Project coordinate system: epsg:31700

Greek Ktimanet WMS Server URL: http://gis.ktimanet.gr/wms/wmsopen/wmsserver.aspx?
Warning: The server sends the images in low accuracy.

Convert from EGSA87 to WGS:
Project coordinate system: epsg:2100