Iowa Network Services Inc. today announced that it has acquired West Des Moines-based Caleris Inc., which offers outsourced call center solutions to telecommunication and technology businesses.

The acquisition is a "great fit with the back-office services we currently provide," said Ron Keller, president and CEO the privately owned group of 122 Iowa independent telecommunications companies. 

Caleris was founded in 2003 by Iowa entrepreneurs Rick Grewell and Sheldon Ohringer, who will remain in leadership roles. The company will operate under the same name, and may add up to 100 jobs but some local jobs will be eliminated.

Last year, Iowa Network Servicesacquired Merit Resources Inc. and Internet Solver Inc.