fixes tone after endcall on transferer channel, closes #120

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4760 43c1dc8c-776e-4df2-8ef1-6e829299be21
fixes wrong debuf string

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4761 43c1dc8c-776e-4df2-8ef1-6e829299be21