Ethernet over Synchronous Service Transport (SST)

High-capacity transport for your evolving business needs

Are your voice, data, video and Ethernet transport needs outgrowing existing DS-1 or DS-3 capacities? Qwest® Synchronous Service Transport (SST) is a two-point, broadband, shared Private Line solution that provides a reliable high-capacity connection for the transfer of large volumes of traffic. SST offers growth opportunities for your business through:

• Economies of scale—The greater the capacity, the lower the per-megabit cost.
• Scalability—Additional channels (ports) can be relatively inexpensive.
• Interoperability—Synchronous optical network technology (SONET) works with older and newer services alike.

Description

SST is a point-to-point private line that is provisioned on single-mode, fiber-optic cable and employs only the highest-quality, carrier-class equipment. SST uses SONET for transmission at speeds of OC-3 at 155.52 Mbps, OC-12 at 622.08 Mbps, OC-24 at 1.2 Gbps, OC-48 at 2.49 Gbps and OC-192 at 9.95 Gbps.

Features

• Uses SONET technology, which offers high reliability and survivability.
• Superior quality of service:
• Throughput equals the purchased bandwidth (no congestion).
• Visibility to data channels.
• Advanced monitoring/alarming and performance characteristics.
• Service level agreements for service availability, mean time to repair (MTTR) and customer notification.
• Optional Self-Healing Alternate Route Protection (SHARP) availability allows separation of working and protect fiber.
• Electronic redundancy maximizes service availability and survivability.
• Interoperability with most data format system types:
• Interoperability across equipment vendors.
• Primary rate interface (PRI) and digital data services (DDS) data and voice trunks.
• Frame relay service (FRS) and asynchronous transfer mode (ATM) packet services.
• Newer dense wavelength division multiplexing (DWDM) technologies.
• Channelized and concatenated service availability.
• 24/7 Qwest monitoring.

Benefits

• Efficient—Consolidates lower-speed services.
• Scalable—Grows with your business to meet your future needs.
• Cost-effective—Eliminates valuable network downtime.
• Flexible—Compatible with PRI and DDS data and voice trunks, FRS and ATM packet services and DWDM technologies.
• Robust—Provides enhanced network survivability via optional SHARP capabilities.
• Service and support—24/7 network monitoring and repair availability.

How it works

SST is a point-to-point service that connects two customer or wire center locations. You can also tie together more locations by cross-connecting SST systems or connecting with other services. Should your network sustain a fiber cut, SST's four-fiber configuration makes it possible for the network to remain functional. The service allows multiple circuit types, such as DS-1, DS-3, STS-1, OC-3, OC-3c (concatenated), OC-12, OC-12c, OC-48, OC-48c, 10 Mb Ethernet, 100 Mb Ethernet and 1 Gigabit Ethernet, to ride the SST separately or in combination, meeting your unique volume-transport needs. SONET technology ensures your network has the highest level of survivability available today.