Re-implemented DND override for using ringer=urgent (Request: Andreas Anderon)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4289 43c1dc8c-776e-4df2-8ef1-6e829299be21
Re-implemented DND override for using ringer=urgent (Request: Andreas Anderon)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4290 43c1dc8c-776e-4df2-8ef1-6e829299be21
Update/Sent urgent call message even when DND is enabled

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4291 43c1dc8c-776e-4df2-8ef1-6e829299be21
parse _ALERT_INFO/__ALERT_INFO during call request

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4292 43c1dc8c-776e-4df2-8ef1-6e829299be21
parse _ALERT_INFO/__ALERT_INFO during call request

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4293 43c1dc8c-776e-4df2-8ef1-6e829299be21
some more comment

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4294 43c1dc8c-776e-4df2-8ef1-6e829299be21
parse _ALERT_INFO/__ALERT_INFO during call request

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4295 43c1dc8c-776e-4df2-8ef1-6e829299be21
remove ALERT_INFO parsing, remove complexity for dnd and ringermod

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4296 43c1dc8c-776e-4df2-8ef1-6e829299be21