Student Phones

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Trinity uses a Cisco Voice Over Internet Protocol (VoIP) telephone system for all on-campus voice communications, including the phones found in dormitories. These phones can be used to call on-campus numbers by simply dialing the four-digit extension number and also act as campus-wide notification systems in the case of emergencies. Availability of phones in student dorms may vary, so if you would like to know what will be available prior to moving in please contact Cynthia Littles at



Trinity students


Getting Started

The red light on your hand set blinks with an incoming call and stays lit when you have a voice message. To place a call, use one of several options to go off-hook before or after dialing a number. 


VoIP Phones FAQ

How do I transfer a call directly to someone's voicemail? 

While on the line with the caller, press the button below Transfer. Then dial 3 + the extension and then immediately hit the button below Transfer again. 


How do I place a call on hold?

While on the line with a caller, press the button below Hold.  


Sometimes I see a missed call, but when I check my voicemail messages, there are none. Why? 

On the VoIP phones, missed calls are not the same as voicemail messages. They are just that- missed calls. anytime a call is not answered, a missed call is registered, whether a voicemail is left or not. The red light on the receiver lights up and a small envelope appears at the top right of the screen whenever a new voicemail message has been left.


Why doesn't hitting the redial button for a missed call work? 

It actually does work. Since 9 must be dialed to reach an outside line, pressing the button under Redial only works when redialing an on-campus extension. To use redial for an off-campus number, highlight the number in your call log and press the button under Edit Dial. Now use the buttons under the arrows and the keypad to place a 9 in front and press the button under Dial. 


Sometimes when I think I've hung up my phone, it's not all the way on the cradle. Why does it do that? 

There is a lip on the phone hook designed to hold the phone in place when it has been wall-mounted. By default, the lip is turned out in this way on all new phones. For phones which are not wall-mounted, pull the tab directly under the receiver upwards. It will snap up and come off. Turn it upside-down and slide it back down until it clicks into place.


On the old system, I was able to listen to a message and then immediately call the person who left that message by keying in a shortcut. Is there a way to do that now? 

Yes, there is a way. Just dial 44 immediately after listening to the message (please note that this only works for internal, on-campus extensions).


What's my phone number? How do I find someone else's phone number? 
  1. Press the Directories button. 
  2. Scroll down to Campus Directory.
  3. Press the far-left button, under Select. 
  4. Use the keypad to enter a name and press the far-left button again under Search.


Getting Help

If you have questions about the campus VOIP phone system or how to use your phone, please contact the ITS HelpDesk at or x7409.