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The Clayton State University uses an Avaya based Voice Over Internet Protocol (VoIP) telephone system for all on-campus voice communications. VoIP represents the next generation in communication services. By moving voice services to the data network, Clayton State eliminates a separate, managed voice infrastructure and dramatically reduces the cost of telephone adds, moves and changes. 

VoIP technology converts voice calls from analog to digital to be sent over commodity data networks. This allows the University to use its existing data network to also transport telephone service throughout the campus. VoIP service comes with a variety of features, some inherent to the handset, others which need to be added to the service. All in all, VoIP is a more flexible and functional solution than the former analog telephone system, and is locally managed.  


  • Use of a single communications network for both telephones and computers instead of the separate phone and computer networks that were previously used on campus.
  • Using Microsoft Exchange, your voice mails can be delivered to your email inbox when a new message is received.
  • Programmable desk phone sets that provide new features, applications and capabilities such as allowing the University to quickly relay alerts or messages to all locations.
  • VoIP makes it easy to administer and configure.
  • Access to a Web Directory from the VoIP phones allows users to find the most updated contact information for faculty/staff in the Clayton State community.


  • Large screen display.
  • Automatic date and time set.
  • Personalized speed dials, ringtones.
  • Look up directory services from your phone.
  • Look up directories via a Web user portal.
  • Call-forward your phone number to another number.
  • Ring a primary phone line as well as remote destinations.
  • Set up audio conferencing from your phone via the conference button.

How to dial from the VoIP system:  Dialing Instructions How to make long distance calls: Long Distance Authorization Codes

Additional feature information and guides can be found on the VoIP Features page