Failed to obtain terrain tile

Hi,

We have aerial imagery for land surface and Digital Elevation Model from LiDAR data. We use ArcGIS Server to serve this data as web services.

I’ve tried to use our web service to create our own earth surface but I got the this error when I’ve tried to create my own terrain.

I’ve tried to use “Hello World SandCastle Example” and ESRI free elevation web service for testing but I got the same error again.

And I tried this example but the result is the same.;

http://cesiumjs.org/Cesium/Build/Documentation/ArcGisImageServerTerrainProvider.html

Example:
**var terrainProvider = new Cesium.ArcGisImageServerTerrainProvider({
  url : 'https://elevation.arcgisonline.com/ArcGIS/rest/services/WorldElevation/DTMEllipsoidal/ImageServer',
  token : 'KED1aF_I4UzXOHy3BnhwyBHU4l5oY6rO6walkmHoYqGp4XyIWUd5YZUC1ZrLAzvV40pR6gBXQayh0eFA8m6vPg..',
  proxy : new Cesium.DefaultProxy('/terrain/')
});
viewer.terrainProvider = terrainProvider;**
**Result:**
An error occurred in "ArcGisImageServerTerrainProvider": Failed to obtain terrain tile X: 1 Y: 0 Level: 0.
An error occurred in "ArcGisImageServerTerrainProvider": Failed to obtain terrain tile X: 0 Y: 0 Level: 0.
Where have I gone wrong?

29 Ağustos 2015 Cumartesi 01:41:39 UTC+3 tarihinde corbi...@gmail.com yazdı: