Restrictions:

• The feature only covers homogeneous OS4K networks (OS4K-OS4K) therefore, in order to have the networking scenario covered, the caller A (from partner switch) needs to "prove" it is part of own customer OS4K network. This means the ORIG_NET_ID flag as part of Classmarks of incoming setup NEEDS to be DB_CP_ONI_OWN_1 (which normally is, in an OS4K homogeneous network). For other values pointing to Public_Network or for lack of any indication (NO_IND), the announcement shall not be played at all to the caller.
• If the special flag in LDAT is configured, but the announcement doesn't work or isn't configured, then the call forward to the external destination will be executed without playing the announcement.
• If the configuration isn't complete, the call forward to the external destination will be executed without playing the announcement.