When subscriber makes a dial session to have data service (wireless or mobile broadband internet service) on the CDMA platform, the first stage it will go through the telecommunication system such as BTS, BSC and MSC. Mobile Switching (MSC) will indicate that it is a data service session than MSC will forward the request to the Public Data Serving Node (PDSN). PDSN is the central processing of data service on the CDMA platform. In term of voice session it has the same function as MSC meanwhile SMS service, it is like Short Messaging Service Centre (SMSC). Continue reading PDSN: The Central processing of Data Service