This document describes AT&T's Global Smart Messaging Suite API and Location Information Services API. The Global Smart Messaging Suite API allows developers to send and receive SMS messages to over 1300 carrier networks globally through HTTP, SOAP, and SMTP interfaces. The Location Information Services API returns location information in the form of latitude and longitude for a given phone number through HTTP and SOAP. Both APIs require an existing AT&T contract and developers should contact their sales representative for access.