IT Services provides the central telephone services for Trinity.

Towards the end of this page, you will find links to instructions on how to use the internal phones as well as forms for submitting requests for new phone extensions, mobile phones, phone extension moves and more.

As the majority of this service incurs a cost to the requesting area, please make sure that all work and expenditure have been authorised by your Head of Area before submitting any request.

Getting started

You can use the relevant links below to set up your voicemail on your internal phone extension and become familiar with the Trinity telephone service instructions, such as dialling an external number from an internal phone line, calling a Trinity extension from a Trinity mobile, or how to place a call on hold or transfer a call.

Access levels to external phone numbers

Different phone lines will have varying access to call external phone numbers and/or mobile phone numbers.

Purchase Orders

Please note that some requests will require a Purchase Order. Purchase Orders should be raised in iProc. Please search the Main Store for ITSTEL and you will be presented with the Telephone Services Catalogue.

Reporting extension faults

If your phone displays an error message (see sample message below), press the top left function button, enter the extension number and press the down arrow button. The phone will then re-register and service will resume.

<sample message> Mitel IP handsets - Not Configured No Service

For general enquiries or fault reporting please contact the IT Service Desk.

Need Further Help?

Search the Knowledge Base for answers to commonly asked questions.

Still need help? Contact the IT Service Desk by one of the below methods.

Phone: +353 (01) 896 2000
Web Portal:

Service desk opening hours are:
Monday - Friday: 09:00 - 17:00