retail sms receipting system , bulk sms via shortcode or smpp connection - repost

i want a system which can be able to send a text message upon payment as in the case of a paper receipt ours will be a text [login to view URL] system should be able to apply to universities schools , hospitals and government institutes such as power [login to view URL] the same system there should be a capability to send messages to clients messages via smpp connection to the shortcode via smsc . in the same system there should be space left to create other tables for future businesses. the system should not be on a website but a standalone system then intergration with the web will be another advantage