Activation of the call deflection service has only local significance (for example, no signaling information is exchanged with the remote peer). It applies only to activation/deactivation on an NAI basis for all served users.
To activate call deflection for an NAI, the application sends an ACU request message to the stack to the ACU_MGMT_SAPI containing an acu_ss_activate_deflect_invoke extended data structure.
If call deflection is successfully activated, the stack returns an ACU indication message to the application containing an acu_ss_activate_deflect_ret_result extended data structure.
Activation of call deflection
If call deflection is not successfully activated, the stack returns an ACU indication message to the application containing an acu_ss_reject extended data structure.