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Telephone Service - Cisco VoIP

Using your VoIP Phone

CU Boulder's VoIP service encompasses telephone, call center, voice messaging, email integration, and other current technologies.

OIT provides a Phone Quick Reference Guide (PDF) for users to print or keep on their desktop, Frequently Asked Questions about phones, as well as information on:

Model 8800 Series

Learn more about your phone by visiting the Cisco IP Phone 8800 Series website.

Self Care Portal for Telephone Settings and Speed Dial Numbers 

Phones include access to a Self Care Portal where you can manage your telephone settings, including speed dial numbers, ring settings, voicemail notification, call history, and call forwarding. To access the Self Care Portal, you must be on campus or using VPN. For information about using the Self Care Portal, refer to the links below: 


  • Moving your IP telephone may result in incomplete location information being shown if the phone is used to dial 911 in an emergency situation.
  • Use the Voice/Data Services Request form to request the change.

Vendor Provided Guides

Refer to the following links for user guides for phone models currently provided to the campus. Model 8831 is a conference phone, and model 3905 is a small wall phone.

Voicemail Instructions

Phones are integrated with the CU Boulder's voicemail system. Learn more about using your phone with the voicemail system by visiting the following pages:

Model 9971 Phones 

OIT is not issuing Model 9971 Phones, however, some users may have been issued this model in the past. Refer to the Discontinued Model 9971 page for instructions and tutorials.