Hi I need to solve this problem I´ve reported several times: please take a look into this report: http://lists.iptel.org/pipermail/serusers/2004-August/010930.html
...If the called-user belongs to the voicemail group and the caller-user cancels the call I see irregular behavior in both SER instances and No "Sip-Response-Code=487" is recorded in radius acc (just an start record without stop)... same problem if I use Asterisk as a voicemail system, please send me some advice.
thank you Rafael