For rejected calls, by default the rejection is done using the response code 666 and the string "Unwanted". However, if required by the ISP, a different code and/or string can be used, configured using the process below.
Rejected calls are included in the system's SMDR and CDR outputs.
Rejected calls are not included in the individual user's call logs and call histories.
Procedure
Open the SIP line's settings and select SIP Engineering.
Click Add and enter one of the following custom strings:
To change the reject code, enter SLIC_STIR_REJECT_CODE=N where N is the response code number to use.
To change the reject string, enter SLIC_STIR_REJECT_STRING=Y where Y is the string to use.