Remote processing of APPC and OTMA messages in an MSC network
In an MSC network, you can bypass local affinity for synchronous APPC and OTMA messages by queuing them to remote MSC transactions.
Remote IMS systems process APPC and OTMA messages asynchronously and disassociated with the APPC or OTMA conversation. IMS does not propagate or cascade APPC or OTMA conversations to the remote IMS system. IMS saves an APPC or OTMA token in the message prefix. When a response or program-to-program switch returns to the originating IMS system, IMS attempts to restore the synchronous APPC or OTMA conversational mode to the message.
To enable the remote processing of an APPC or OTMA message in an MSC network, queue the message to a remote MSC transaction.