Enterprise Infrastructure Solutions (EIS): IP, Optical and Transport


Virtual Private Network Services (VPNS) allows customer agencies to easily interconnect their sites across metropolitan areas or around the globe. VPNS is a Multiprotocol Label Switching (MPLS) based architecture offering a wide range of connectivity options and features, including point-to-point, point-to-multipoint, Classes of Service (CoS), multicast, and interworking with Ethernet and IP networks. All infrastructure and devices involved in implementing the VPN are owned by AT&T and located at the edge of the AT&T backbone.

Ethernet Transport Service

Ethernet Transport Service (ETS) is the Layer 2 service offer that connects customer agencies together at bandwidths scalable up to 10Gbps today, and higher speeds in the future, while also providing higher-layer protocol transparency. Offering the same flexibility over long distances that is enjoyed within an agency’s LAN, ETS will provide scalable Ethernet (i.e., bandwidth on demand) using the most current software-defined network technology.

Internet Protocol Service

Internet Protocol Service (IPS) uses the TCP/IP protocol suite to interconnect with public ISP networks and other government networks across the public Internet. IPS provides agencies with a wide range of connectivity options that support IPv4/v6, enabling government users to access the Internet, Government-wide intranets and extranets.

Optical Wavelength Service

Optical Wavelength Service over Wave Division Multiplexing (OWS over WDM) service delivers protocol-transparent connectivity to agency locations. AT&T long-haul WDM systems support multiple concurrent SONET and Ethernet standards-compliant signals. This abundant system capacity backed by high-performance applications able to respond rapidly to bandwidth demands, gives agencies unprecedented flexibility to handle large, unexpected traffic surges.

Private Line

Private Line Service (PLS) provides global, dedicated, and reliable connections between endpoints, and features a wide range of bandwidth options. For layer 1 transport to required solutions, agencies can choose link speeds from 64Kbps to 10Gbps. The following PLS types are available with both customer-provided access as well as integrated access: DS0, DS1/3, SONET, and E1/3.


The AT&T Synchronous Optical Network Service (SONETS) is a self-healing optical fiber network service providing agencies with highly reliable, secure, and dedicated connectivity for voice, data, telemetry, video, or multimedia and encrypted communications.

Dark Fiber

Dark Fiber Service (DFS) offers dedicated fiber transport and flexible configuration capabilities. Its scalable optical fiber infrastructure (cabling and repeaters) enables agencies to design their own optical networks, connect their own electronics to provide transport on fiber strands and modify their networks as needed. DFS provides physical strands of fiber plant between agency service delivery points (SDPs) and may also be terminated to an AT&T co-location. DFS offers simple point-to-point connections between two locations and configurations that interconnect multiple locations. DFS can also include intermediate amplification or repeater locations to extend service reach.