- WARNING - Add STATUS ENQUIRY message handling to ozmod_isdn, this is a bad hack because the current OpenZAP isdn stack is not stateful (the experimental rewritten version is...) and so we have to try to map OpenZAP channel states to ISDN states, which is not possible in all cases. This patch (as long as it sends the right answer) prevents sudden disconnects of (active) calls, caused by not responding to a STATUS ENQUIRY message from the other side. - WARNING -

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@754 a93c3328-9c30-0410-af19-c9cd2b2d52af