We are trying to integrate the Asterisk dialer through SIP trunk with Cisco 3845 gateway running c3845-adventerprisek9-mz.124-15.XZ2 IOS image on the same. I`m facing some issues in my attempt to track the Special Information Tones (SIT) on this deployment ,where in the normal disconnect cause code 16 for all the calls are being reported to the Asterisk dialer on the SIP trunk. Ideally it should be the different cause codes for each of the SIT type. Could somebody please advise ,if this is supported with the Cisco Voice gateway platforms? This is kind of urgent for us.