By default, the Sonus SBC 1000/2000 uses RFC 3398 cause code mappings. This table allows you to define other mappings for cause codes.
To create or modify an Entry to a SIP to Q.850 Override Table:
In the left navigation pane, go to Telephony Mapping Tables > SIP to Q.850 Override Tables > Entry.
Click the Create SIP to Q.850 Cause Code () icon.
Specifies the SIP Response Codes to which the selected Q850 Cause Codes is mapped.