In the early stages of text messaging (SMS) introduction the traffic was very less. This was mainly due to the lack of customer awareness of the service and lack of interoperability between
networks. Customers of operator A were not able to send to customers of operator B. This was a major road block in generating revenue for mobile operators. To solve this problem, several SMSC
gateways were introduced to interconnect these operator's SMSC's. This contributed to the huge generation of SMS traffic.Today, Picture or multimedia messaging (MMS) service is introduced by almost
every operator in the world. However, MMS interoperability does not exist between operators. This is contributing to customer dissatisfaction and very low revenue generation for the mobile
operators.Mobile operators around the world realize that MMS interoperability is a challenge. Interoperability between operators' MMS networks will accelerate the user adaptation and contribute to
good revenue generation. Implementing interoperability with every other operator in the world is a biggest challenge and very time consuming process.