Hi guys,

I see that my FS sends sip message "486 Busy Here" with Reason: Q.850; cause=16;text="NORMAL_CLEARING".  Why 16 and "NORMAL_CLEARING ? Probably it should be 17 "user busy". One of my carrier play a "fast busy" (number not available)  and blames Q.850 field. 

Any advice are welcome.

Thanks.