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}); </script> </li> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/all-business-solutions/">All Products</a> </li> </ul> </div>  </div>    <div id="content">   <h1 id="title">SONET Services</h1> <div class="first_230"> <div class="navigation"> <script src="/web/20130805115340js_/http://www.business.att.com/library/behavior/jquery.cookie.js" type="text/javascript"></script> <script src="/web/20130805115340js_/http://www.business.att.com/library/behavior/jquery.treeview.js" type="text/javascript"></script> <script type="text/javascript"> var currentPortfolio = "data-networking-wholesale"; //get the previous Portfolio from cookie var prevPortfolio = $.cookie("PrevPortfolio"); if (currentPortfolio != prevPortfolio) { $.cookie("treeview", null, {path: '/'} ); $.cookie("PrevPortfolio", currentPortfolio, {path: '/'} ); } </script> <ul> <li><a href="/web/20130805115340/http://www.business.att.com/wholesale/Portfolio/voice-wholesale/"> Voice Networking Solutions</a></li> <li><a href="/web/20130805115340/http://www.business.att.com/wholesale/Portfolio/intellectual-property-wholesale/"> Intellectual Property</a></li> <li><a href="/web/20130805115340/http://www.business.att.com/wholesale/Portfolio/business_continuity_wholesale/"> Business Continuity Solutions</a></li> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Portfolio/data-networking-wholesale/"> Data Networking Solutions</a> <ul id="navTree" class="expanded"> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Family/data-networking-wholesale/metro-services-wholesale/">Local Data & Access Services</a> <ul class="expanded"> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Service/data-networking-wholesale/metro-services-wholesale/ethernet-services-wholesale/">Local Ethernet</a></li> <div class="grayHorzRuleSideNav"></div> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Service/data-networking-wholesale/metro-services-wholesale/point-to-point-services-wholesale/">Local Private Line Point-to-Point Services</a></li> <div class="grayHorzRuleSideNav"></div> <li class="selected"> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Service/data-networking-wholesale/metro-services-wholesale/sonet-wholesale/">SONET Services</a></li> <div class="grayHorzRuleSideNav"></div> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Service/data-networking-wholesale/metro-services-wholesale/wavelength-wholesale/">Wavelength</a></li> <div class="grayHorzRuleSideNav"></div> </ul> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Family/data-networking-wholesale/long-haul-access-wholesale/">Long Haul Data Transport & Access</a> <ul class="expanded"> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Service/data-networking-wholesale/long-haul-access-wholesale/private-line-services-wholesale/">Domestic Private Line Services</a></li> <div class="grayHorzRuleSideNav"></div> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Service/data-networking-wholesale/long-haul-access-wholesale/ethernet-long-haul-wholesale/">Long Haul Ethernet</a></li> <div class="grayHorzRuleSideNav"></div> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Service/data-networking-wholesale/long-haul-access-wholesale/international-private-line-wholesale/">International Private Line Services</a></li> <div class="grayHorzRuleSideNav"></div> <li> <a href="/web/20130805115340/http://www.business.att.com/wholesale/Service/data-networking-wholesale/long-haul-access-wholesale/optical-mesh-service-wholesale/">Optical Mesh Service</a></li> <div class="grayHorzRuleSideNav"></div> </ul> </li></ul> <li><a href="/web/20130805115340/http://www.business.att.com/wholesale/Portfolio/ip-solutions-wholesale/"> IP Networking Solutions</a></li> <li><a href="/web/20130805115340/http://www.business.att.com/wholesale/Portfolio/directory-operator-services-wholesale/"> Directory and Operator Services</a></li> <li><a href="/web/20130805115340/http://www.business.att.com/wholesale/Portfolio/mobility-wholesale/"> Wholesale Mobility</a></li> <li><a href="/web/20130805115340/http://www.business.att.com/wholesale/Portfolio/value-services-wholesale/"> Value Added Services</a></li> </ul> <script type="text/javascript"> var strCookie = "010".replace("01","1"); 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The ring, with bandwidth  levels of OC3, OC12, OC48, or OC192, will support voice, video, and data via DS-1 and above interfaces. </p> <p>Ring architecture, including sub-rings, is designed to provide increased reliability and functionality. 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