Thank you again for your help, i tried with another setting like 88x etc. but the error presists. I think it realy is a Bug.

Another question: under 3.3.1 (System Link ID) there is a setting calles "No MGI" it looks like when I put it on ON the speeking quality is better. Can you explain me whats the setting abouth.

a simmilar setting is available under 3.3.4 (Networking Option) SPNET Digit Send: MGI Signaling vs MCP signaing.

what setting do you suggest?

thank you again for your help

Jonas