If you are looking for a reputable provider of Ontario, California, call center services, we can help. Based in the Midwest United States and serving clients nationwide, we proudly offer our full suite of call center solutions to Ontario area businesses.
Unmatched Call Center Experience
CMS is an award-winning call center serving thousands of businesses across a vast array of industries. We understand how important customer service is to our clients, and we deliver personalized solutions designed to further customer satisfaction without increasing costs. Though we lack a physical call center in Ontario, our reach and experience is worldwide.
24 Hour Call Center Coverage
All of the call center services we provide in Ontario, California are available 24/7/365. Whether you need us after hours or during a local weather emergency, we always have courteous, attentive agents ready to handle your calls. Located in a secure Midwest facility with back-up power and redundant systems, we are consistently available and never experience downtime.
Custom Built Solutions
Every business has unique call center needs, and our solutions are flexible to accommodate them. Whether you need a call center to schedule appointments after hours or a customer service department to support your small business, we can tailor our services to meet your unique circumstances. All of the call center services we provide to Ontario businesses are 100% customizable and designed to function as an extension of your business.
Ontario Customer Service Outsourcing

CMS customer service outsourcing gives Ontario businesses the skilled personnel they need to handle their call volume. By paying our customer service representatives only for the time they spend assisting your customers, you can limit your expenses without sacrificing your service quality. Staffed by highly trained representatives well versed in customer service practices, our outsourcing solutions provide you the quality you demand at a price you can afford.

When you are experiencing more calls than you can handle, our overflow call center can step in to assist. Using common “call forwarding no answer” functionality, your existing telephone number can be configured to forward to our call center in the event there is no answer after a predetermined number of rings, allowing callers to reach a live person instead of hanging up or being forced to wait for the next available operator.
Ontario Small Business Call Center

If you are like most small businesses, you are short on cash and struggling to compete with your larger competitors. By using our Ontario small business call center solutions, you can establish a professional phone presence without the expense of hiring employees. When customers call, they’ll reach a friendly live operator who answers in the name of your company and acts as a member of your customer service department.
