Tripp Lite
1111 W. 35th Street
Chicago, IL 60609
+1 (773) 869-1776
+1 (773) 869-1329

VoIP UPS Finder

This calculator will recommend UPS battery backup options for a network closet supporting Voice over IP (VoIP) phones and related equipment. In the event of a power outage, phones and equipment will remain up and running for the prescribed amount of time. In addition to VoIP, it can also be used to size battery backup for IP camera, wireless access points (WAP), access control devices and other powered IP devices.

Important Note: This calculator will help you estimate power requirements for a single network closet and not total power requirements for an entire facility. Use this calculator to get recommendations for each closet, then combine the results to arrive at a comprehensive VoIP battery backup plan.


Allowance for Future Growth (% of Total Load)

Minimum Runtime:

Note:  For runtimes over 2 hours (120 minutes), please contact a VoIP application specialist by email or call +1 (888) 447-6227 for assistance with UPS selection.

Get our Free VoIP E-Book!

Considering a VoIP project or already working on one? Download Tripp Lite's free VoIP
e-book, with important tips on preparing your network closets to handle VoIP hardware.





Mon - Fri 8 AM - 5:30 PM CST
+1 (773) 869-1776

Mon - Fri: 8 AM - 5:30 PM CST
+1 (773) 869-1234

Tripp Lite
1111 West 35th Street
Chicago, Illinois 60609
United States

+1 (773) 869-1111 Main
1 773.869.1329 Fax

Business Hours
8 AM - 5:30 PM CST

See all contact options

Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at +1 (773) 869-1776 or email