VOIP Telephone System

Service Information

Cook County recently underwent a multi-year project to modernize its telephones and telecommunications infrastructure. Most traditional landline phones across the County were replaced with Voice Over Internet Protocol (VOIP) enabled phones. 


The link below will take you to the Unified Communications Self Care Portal. You can log in to the portal to change phone settings and get more information. This link will only work within the County network. 

Unified Communications Self Care Portal



Voicemail Quick Reference Guide

 Phone Quick Reference Guide - 7800 Series

 VOIP / Unified Communications Training

Getting Help  

If you're experiencing problems or need assistance, please call (312) 603-1390. 


Why was VOIP Important for Cook County?

  • It streamlined the County’s telecommunications operating model.
  • It allowed Cook County to consolidate its telecommunications and data infrastructure, instead of using separate lines and switches for each — saving the County money.

What is VOIP? 

VOIP is a method for using a group of tools to deliver audio or multimedia communications over Internet networks. Broadband phone service, for example, is a type of VOIP communication. VOIP can be used for audio, video, text messages or even faxing. The user experience of making a phone call via VOIP is the same as any other type of call. 

While the buttons and operation of the new phones is similar, the new phones have enhanced features for consideration. For instance, voicemail can be integrated with County email and a single phone number can ringing both at your desk and your cell.