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Welcome GS-1 customers to the MasterCall family! You may continue to purchase services as you have in the past. For more information regarding your new benefits visit MasterCall website at www.mcctelco.com
or contact us at
1-800-816-7907 
 
GS-1 Communications, Inc. is a privately-held corporation based in Alexandria, Virginia, just a few miles outside of Washington DC.
 
GS-1 owns and operates a telephone and VOIP switches in its New York City facility. The company enjoys working in partnership with some of the world’s largest international and domestic carriers and offers the latest in technologies allowing GS-1 to combine high quality connectivity with some of the lowest rates in the industry.
 
GS-1 provides service packages to wholesale customers: Tandem Exchange on its direct routes to overseas, Switch Partitioning on GS-1 prepaid calling card platform, Custom Prepaid products design and support. We also offer different phone services for individual and business users: Personal Toll-Free, Toll-Free Forwarding, IP Phone, variety of domestic and international Prepaid products, Web Initiated Callback.
 
As a result of the company’s business ethos and strong customer commitment growth has been continuous. Every customer, existing or potential, is treated with respect and is considered part of the GS-1 family. We listen, we care and we view success by building long lasting relationships.