Wired Telephone

Sale and management of standardized desktop and other wired phones.

Also known as NetPhones, ROLM Phones, desktop phones, or landline telephones.

CUIT provisions, installs and manages standardized wired telephones for Columbia’s faculty and staff on the Morningside and Manhattanville campuses. Depending on your department or location, your desktop telephone might be a ROLM phone or a NetPhone. Both types offer free on-campus dialing, voicemail, call forwarding, call waiting and speakerphone.

Previously, wired telephone extensions (4-XXXX, 3-XXXX, 1-XXXX) indicated your role at the University (student, faculty or administrator), however this is no longer the case with the growing ubiquity of cell phones and movement of University employees. Students no longer have wired telephones in their dorm rooms, however the following buildings have shared phones in the hallways:

Tie Line Dialing Prefixes

A tie line connects two private branch exchanges, and is useful when you know a person's extension and location, such as as when you are using a desktop phone on Columbia's Morningside campus and would like to call the CU Medical Center.

ROLM phones

  • Guide to basic functions, such as transferring calls or forwarding to another extension.
  • Replaced CENTREX phones at Columbia, beginning in 1988
  • Uses proprietary ROLM digital data protocol requiring direct connection to a ROLM switch
  • Dial your direct access number to reach your voicemail (“PhoneMail”) from a non-University phone. This number is supplied to you upon your phone setup, but if you no longer have it, please contact the CUIT Service Desk by submitting a ticket, sending an email to askcuit@columbia.edu, or calling 212-854-1919.
  • Voicemail accepts and stores up to 20 messages.
  • To make an off-campus call with a calling card, dial 9+3+0+area code and number


  • Guide to basic phone functions, such as setting up voicemail or using call logs 
  • Set up a NetPhone Training session for you or your team
  • Introduced in 2007
  • Uses Voice over Internet Protocol (VoIP) technology to transmit voice communications over data networks, providing enhanced features for users and reducing the cost of long distance calls, equipment and maintenance for the University
  • Offers web-based management interface, myNetPhone, to facilitate call forwarding or caller ID preferences
  • Dial (212) 854-8600 to access your voicemail, when prompted enter your mailbox number (5-digit extension) and enter your password. Alternatively, you can use myNetPhone to have your voicemails emailed to your inbox.
  • Voicemail accepts and stores up to 50 messages


CUIT’s Billing Office provides monthly consolidated bills for all campus telephone services. Depending on your phone and call destination, your calling rate may vary.

For capital construction, renovation and network upgrade projects, the cost of jack installations can vary depending on the scope of the project. Please refer to CUIT’s Technical Design Requirements documentation and contact the Network Engineering and Project Management group by sending an email to netproject@columbia.edu to initiate a conversation about the service you would like to order and CUIT will determine a project estimate.


If you have a Rolm phone, you will need to know the current password attached to your extension. Enter your voicemail box as you would to retrieve messages, and select Mailbox Options to update your password.

If you have a NetPhone, go to myNetPhone, select Features and Voicemail and create your new password at the bottom of the page

Please remember that it is extremely important to create your own unique password to ensure the security of your voicemail messages and to protect yourself against possible voicemail abuse.

If you have a Rolm phone, first try “111”, which is the default password. If that doesn’t work, send a self-service web form to the CUIT Service Desk or call them at 212-854-1919. The password on your extension will be set to the default password "111" by the following day. With the default password you will be able to get your voicemail and create a password of your own choosing.

If you have a NetPhone, go to myNetPhone, select the Features and Voicemail link and create your new password at the bottom of the page

Please remember that it is extremely important to change your password from the default to ensure the security of your voicemail messages and to protect yourself against possible voicemail abuse.

No. Generally you should not take your phone with you, however you can usually keep your extension. To move a phone to another location, to order additional phones, or to make any other changes to your phone service, please submit a self-service web form with your current location and extension, as well as when and where you will be moving.

Yes. Multiple NetPhones can share a phone number, where an incoming call to that line will cause both phones to ring. You can also set up multiple ring tones so you can distinguish by sound which line is ringing. The call can then be answered by any of the phones it is ringing on.

Please submit a ticket to the CUIT Service Desk to request this feature. You can also call the Service Desk at 212-854-1919.