Contact Us

Our goal is to offer the best service in the industry. Please feel free to contact us at any time for answers to your questions, to consult our professional staff, or to request in-depth information. Our outstanding customer service personnel look forward to assisting you. 

Please feel free to use the automated email to send a message for any questions, requests, and assistance.  We will ensure that it reaches the right person who will address your needs promptly.

Corporate Contact Information

Sumitomo Electric Lightwave Corp.
78 T.W. Alexander Drive
P.O. Box 13445
Research Triangle Park, NC 27709
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General Phone Inquiries: 800-358-7378 or 919-541-8100

Customer Service

Whether you have a question, require a quote, or need information, our customer service staff is ready to assist you.

Phone:  800-358-7378 and ask for Customer Service or send us a message via the automated email to the right of this page.

(919) 541-8265

Regional Managers – Communication Network
Products & Solutions

Whether you are an existing customer or new to Sumitomo Electric Lightwave, your regional manager offers unprecedented support and personal assistance.

Contact your Regional Manager

Regional Managers – Data Center and Enterprise
Network Products and Solutions

For inquires and assistance with Sumitomo’s end-to-end optical fiber and connectivity solutions for your data center and enterprise networks, please contact your Sumitomo Electric Lightwave regional manager who offers unprecedented support and personal assistance. 

Contact your Regional Manager

EPON Equipment Sales Assistance

For assistance and inquiries about Sumitomo Electric’s next generation EPON equipment and solutions, please email  Please include your company name, phone number, and detailed inquiry.  A sales manager will contact you promptly.

Regional Managers – FutureFLEX®
Air-Blown Network Solutions

To contact a FutureFLEX  Regional Manager, please visit

Fusion Splicing On-Time Technical Center

For your Sumitomo Electric Fusion Splicing needs and equipment inquiries, we offer the industry’s best On-Time Technical Center service facility in the industry with the fastest typical 1-day turnaround times and 24x7 technical assistance… a quality standard that reflects our technicians’ commitment to you and the job you need to get done.

Please ask about our exciting fusion splicer rental program.

Phone:  888-SPLICER (888-775-4237)  Available 24x7


EPON Equipment Technical Support Center

Expert technicians are ready around the clock to service your Sumitomo Electric EPON equipment, return authorizations, and other technical support needs.  24x7 technical assistance reflects Sumitomo Electric’s commitment to servicing our customers with prompt and exceptional attention.

Phone: 866-922-8542 Available 24x7


Marketing & Communications

For news inquires, press releases, articles, case studies, or product/solutions-related collateral, please contact our marketing and communications department.  We’re here to assist you.

Phone:  800-358-7378 and ask for Marketing Communications or 919-541-8383


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