From SharePoint Saturday Boston Question and Answer on my session Managing and Monitoring SharePoint 2010 with Operations Manager 2007 R2.
To send notifications of alerts, Operations Manager 2007 can use a variety of mechanisms, such as e-mail, instant message, short message service, and pager. Choosing the delivery mechanism for the notification is called enabling a notification channel. The length and format of the message varies based on the media that receives the notification. The available notifications channels are e-mail, instant message, Short Message Service, and command. A command channel can run a script or executable file. So if you want to post to Twitter or some other destination, you can :)
Operations Manager can accommodate different notification channels and endpoints with a variety of delivery protocols and formats. For example, some operators prefer to receive notifications on a pager, while others might prefer to receive notifications by e-mail. Operations Manager supports Session Initiation Protocol (SIP), which supports the transmission of messages through instant messages, and short message service (SMS), which supports the transmission of short text messages to and from mobile phones and other devices. In addition, you can configure a notification to run a command instead of or in addition to sending a notification message. A command can specify a path to an application or script that can perform basic functions. You can also use a command to integrate a custom delivery channel that is not supported by Operations Manager out of the box, such as a pager.
Note The above links include variables and default settings for alert notifications
Notifications generate messages or run commands automatically when an alert is raised on a monitored system. By default, notifications for alerts are not configured. If you want your Operations Manager users to be notified immediately when an alert is generated, you need to configure notifications and let the users know the steps they need to take to receive them.
Note Before you can subscribe to a notification, you need to provide subscription information, such as address and notification channels.
To configure notifications, an Operations Manager administrator must perform the following steps:
After an administrator completes these steps, an administrator, operator, or advanced operator can do the following:
Will post a link to my deck by early next week (probably today)
It sends out sms alerts on your mobile phone though SMS within seconds. I tried it and works well for me..