AT&T Unified Messaging (SM)
Learn More About AT&T Enterprise Messaging (EM)
AT&T Enterprise Messaging (AT&T EM) is a "family" of messaging products created to support medium to large business customers. The AT&T Enterprise Messaging family of products includes various products with features designed to address business customers' diverse messaging needs. The family of products includes an Announcement Only product, Voice Messaging (VM) product, wireless from AT&T/wireline product (CIO), a Unified Messaging product (UM) and a Call Tree (Auto Attendant) product.
The following are feature packages of the various AT&T Enterprise Messaging services:
Product Highlights
Product Description
Announcement Only
  • Inbound Call Integration
  • Callers can only listen to recorded message
Voice Messaging
  • 100 MB of storage for voicemail
  • Inbound Call Integration
  • Listen to all of your messages over the phone
  • Ability to receive fax messages in your Voice Messaging mailbox
  • Message Waiting Indicator
  • Extensions available
Call-In-One (CIO)
  • Integration of wireless from AT&T number
  • 100 MB of storage for voicemail
  • Inbound Call Integration
  • Listen to all of your messages over the phone
  • Ability to receive fax messages in your Voice Messaging mailbox
  • Message Waiting Indicator
  • Extensions available
Unified Messaging (UM)
  • Unified Mailbox for voice mails, faxes, and emails
  • 100 MB of storage for all messages
  • Inbound Call Integration
  • View all of your messages over the Internet
  • Listen to all of your messages over the phone
  • Ability to receive fax messages in your UM mailbox
  • Integration of wireless from AT&T numbers
  • Message Waiting Indicator
  • Notification options
  • Extensions available
AT&T Call Tree (Auto Attendant)
  • Ability to route calls to appropriate numbers
  • Call Tree menu selections
  • Call Tree schedules
  • Dial-by-Name/Dial-by-Extension
  • Emergency Greeting