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Multi-line Telephone

After an IP-based or traditional TDM telephone service has been established, a physical telephone must be chosen. While most users will use a single line telephone, multi-line sets are also available.

A multi-line phone is more robust than a basic single line phone in that is has additional buttons on the base that place features and additional phone lines at the user's fingertips.

Recommended Users

Multi-line phones are especially useful for administrators and receptionists where multiple calls may be coming in at one time, or more than one phone number needs to be monitored. Please be aware that multi-line telephones do not operate in the same way as single-line telephones; if a phone jack is activated for a single line phone, a multi-line phone will not work in it.

Northwestern Information Technology (IT) offers the following types of multi-line phones:

Also available as an option is a 30 button add-on to the side of the telephone set to allow you to manage additional phone numbers, especially in a reception environment.


The following features are programmed on your TDM and IP-based telephone service:

For more information on how to use these features and to see what other features are available, please see User Guides.


Buildings must have Northwestern IT telephone service available and an existing jack. If the desired jack has another service active in it, such as data service, it will need to be deactivated before the new service can be activated.


To order phone service including a new phone number, a University work order contact must submit the request using the CONDUITS Online Order Form. All orders must include:

To order a new handset for an existing phone number, please follow the instructions above, but also provide:

Last Updated: 20 December 2018

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