SIT Codes

SIT stands for Special Information Tone and is an international standard signal consisting of three rising tones that indicate that a call has failed. A SIT is usually followed by a recorded message that describes the problem. Just like a dial tone or busy signal, a SIT is an in-band signal intended to both be heard by a caller and to be detected by an automated dialer to indicate that the call failed.

When it comes to Dialer, SIT, SIT Callable, and SIT Uncallable are Wrap-up Categories that the program uses to disposition calls

As a code in Dialer, SIT is a Wrap-up Category/Code that is generated by Predictive Dial COM applications, and SIT appears in the list of Wrap-up Codes and in the lists of Wrap-up Codes for Policy Disposition Conditions and Behaviors. When creating disposition policies, the only option available is SIT (you cannot select SIT Callable or SIT Uncallable). In the case of disposition policies, selecting SIT will catch both SIT Callable and SIT Uncallable return results.

When Dialer makes a call and receives a SIT, Dialer examines the attributes of the call passed to it by Telephony Services and looks for the IC_SitTypeDetected attribute, which designates the type of Tone that was detected.

If the attribute indicates an invalid call condition, Dialer sets the Wrap-up Category to SIT Uncallable and chooses the appropriate Wrap-up Code based on the detected Tone.

If the attribute indicates a valid call condition, Dialer sets the Wrap-up Category to SIT Callable and chooses the appropriate Wrap-up Code based on the detected Tone. A valid call condition is met if the system detects a tone which correlates to a system problem, not specific to the contact dialed. It keeps the contact in a state where it may be dialed again and assigns a wrap-up code of SIT Callable. If the audio returned indicates that the number was invalid, the system assigns a wrap-up code of SIT Uncallable to indicate that the record is no longer in a dialable status.