Replace Header Configuration
Replaces: header support is configured in the session-agent, realm, or sip-interface via the sip-profile configuration element. sip-profiles are defined once and attached to a chosen interface, realm or session-agent.
The replace-dialogs parameter is set to either enabled or disabled. In addition, you may set this parameter to inherit which uses the next lower order of precedence object. If there are no sip-profiles referenced in the higher ordered object, or if all the replace-dialogs parameters are set to inherit, then the feature is disabled.
To configure Replaces: header support: