On my Samsung Note 10.1 second gen . I tried Calling my School since Our sites System is down and I Connected but I Was Showing 100% loss in the Statistics
This sounds like a network connectivity issue. it might be due to low network bandwidth or might be caused by a firewall issue
A few questions to help you diagnose:
1. have you successfully used the client before for video calls?
2. Were you using WiFi or 3G/4G for a connection.
3. Are you able to browse the network from your device
The issue should be reported to your Polycom channel support contact if possible.