Several popular SMS gateways are supported and the included API allows developers to add support for additional gateways. The API also allows other modules to implement SMS features.
The supported gateways are: Clickatell, E-mail Gateway, Gnokii, Kannel and Mobile Muse.
Unpack in your modules folder (usually /sites/all/modules/) and enable under Administer > Site Building > Modules.
Here are some key features of "SMS Framework":
· Send SMS messages using any supported gateway
· Collect, confirm, and store mobile information for Drupal users
· Send batch messages to Drupal users
· Allow users to send nodes or portions of nodes to mobile phones
· Drupal 5.x/6.x