42 MESSAGE FLOW Known as DPM4 to 3BC1 Known as DPM2 io 3BC1 Known ^s DPM4 to SBC2 > MESSAGE FLOW Figure 10: Known as DPM2 to 3BC3 Known as DPM4 to 3BC3 Known as DPM2 to SBC2 Message Transfer in the Developed MESSAGE FLOW Delta System