Core dump on cygwin

I have installed asterisk with exactly the same option as on fedora, except “noload =>” in modules.conf. asterisk starts up on cygwin, but when I connect a phone (xten light) the programe abends with the following messages:

Asterisk Ready.
*CLI> – Registered SIP ‘100’ at port 5070 expires 1800
– Saved useragent “X-Lite release 1105x” for peer 100
Nov 24 22:23:02 NOTICE[3828]: chan_skinny.c:2963 accept_thread: Accept returned
-1: Interrupted system call

Does anyone have an idea?