For immediate support or repair services in Colorado, please call us at 303-785-6300.

For customers with an active QTS service contract who are contacting us after hours, an on-call technician will be notified and will respond within two hours for major outages. Responses to minor outages will occur the next day by 5pm. 

Email us at [email protected] or use the form to send us a message (we will respond to emailed requests during normal business hours).

For customers with an active Avaya IPOSS Contract, please contact Avaya Support at

QTS offers complete remote technical support, onsite technicians, installation services and administrator/user training.

Heritage Systems:

  • Merlin / Merlin Magixs (Limited Support – Manufacture EOS)
  • Partner Line (Limited Support – Manufacture EOS)
  • Definity, Prologixs, Communications Manager <= Release 9 (Limited Support – Manufacture EOS)
  • IP Office 400, IP Office 500 V1 <= Release 9 (Limited Support – Manufacture EOS) 

Learn why your business should protect itself with a QTS Maintenance Service Offering

We offer Repair and Replacement services as well as Disaster Crash Kits. In most cases we can return any business back to a serviceable level within hours.