This group specifies the mapping from the defined transfer priority
to the egress emission priority and routing class of service.
The mapping of transfer priority to egress emission priority and
routing class of service may be modified by the user. Any changes
to transfer priority mappings will immediately take effect on new
calls. Existing connections will not be affected by changes to
transfer priority mappings unless the service is reset by locking and
unlocking the connection or resetting the card where the service
lies.