today our customer had old mcu and interesting to go for larger video deployment but concern about if need to buy new or migrate to new equipment such as MCU.
Can you tell me what old MCU you have and what you are looking to do. You may or may not need to migrate to a new MCU. The latest appliance MCU is the 5300 series or we have an MSE8000 chassis based system that has 8510 MCU cards.