H3C Technologies H3C MSR 50 - Manual (Page 689)

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Figure 690 SIP status code mapping configuration page
You can select the values in the PSTN Release Cause Code fields. You can also click Load Default Value
to restore the default mappings between PSTN release cause codes and SIP status codes.
SIP connection configuration examples
Configuring basic SIP calling features
For information about how to implement direct SIP calling through static IP addressing, configure domain
name involved SIP calling, and configure proxy server involved SIP calling, see "Basic settings."
Configuring caller ID blocking
Network requirements
Router A and Router B work as SIP UAs. Use Telephone 1111 to call telephone 2222. It is required to block
calling number 1111.
Figure 691 Network diagram