ATM

Overview

Asynchronous Transfer Mode (ATM) can dynamically allocate the bandwidth your end-user customers need, as they need it, for increased communications capabilities. This cell relay service transmits high-speed data, voice, and video services to your customers over virtual circuits or paths.

The connection-oriented, fast packet interstate network provides high-speed Internet access in conjunction with Sprint's high-speed Digital Subscriber Line (DSL). And, Sprint's ATM allows businesses with multiple interstate locations to transmit multiple applications between sites. (Refer to Sprint's ATM for Business Applications Diagram 1.2 under Product Details.) Sprint's ATM also allows for the interconnection of compatible Customer Premises Equipment.

With Sprint's ATM, you may:

• Reduce expenditures through efficient network administration.
• Tailor the service to suit your end users' needs.

Features & Benefits

• Efficient transport for Digital Subscriber Line (DSL) services - fully supports your end-user customers' increasing demands for broadband services.
• Dynamic allocation of bandwidth - allows capacity for any end user who needs bandwidth at the time of data transmission, which can greatly reduce network size.
• Efficiency and scalability - allows changes in Domain Naming System (DNS) of servers, RADIUS servers, Internet Provider (IP) address pools, etc., without having to coordinate with Sprint.
• Interexchange and intraexchange Permanent Virtual Circuits (PVCs) - allows the opportunity to market DSL services in all Sprint markets in one state with one physical Point-of-Presence (POP) in that state.
• Flexible PVC speeds - allows you to tailor the service to fit your needs.
• Three categories of service - allows choices in level of service for network design. Available in Constant Bit Rate, Variable Bit Rate, and Unspecified Bit Rate PVCs.
• Multiple PVCs to one port - allows you to design different classes of service for end users.
• A variety of port speeds - gives you flexibility in designing your network. NxDS-1 services are available if you do not need a full DS-3 access connection. DS-1, 2xDS-1, 4xDS-1, 6xDS-1, DS-3, and OC-3 port speeds are available.
• Higher network utilization - reduces capital expenditures because data, voice, and video services can be transmitted over one medium.

Product Details

Sprint's Asynchronous Transfer Mode (ATM) uses cell-switching technology to transmit high-speed data, voice, and video traffic to your end-user customers. ATM cells are 53-byte, fixed-length cells that provide symmetrical or asymmetrical duplex transmissions. With statistical multiplexing, Sprint's ATM lets you allocate circuit bandwidth to applications as needed on virtual channels.

For DSL, Sprint's ATM uses L2TP tunnels, so only one Permanent Virtual Circuit (PVC) is needed from each DSL (Digital Subscriber Line) serving office. (Refer to Sprint's ATM for DSL Diagram 1.1.) That way, your network administration is simplified and costs are minimized. Interexchange and intraexchange PVCs let you serve multiple markets from one location, which provides for economical market entry. Plus, you can control costs by purchasing bandwidth capacity as your business grows.

Sprint's ATM is currently offered in Sprint franchised territories: Florida, Indiana, Kansas, Minnesota, Missouri, Nevada, New Jersey, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Texas and Virginia. Additional states will be added to support the expanded ADSL deployment plans.

Sprint's ATM service network consists of copper or fiber-optic facilities that are routed through local wire centers to an ATM switch at DS-1, 2xDS-1, 4xDS-1, 6xDS-1, DS-3, and OC-3 levels. (In Nevada, only OC-3 service is available.)

Billable elements include:

• Access Termination - Connects the customer's premises to the SWC (Serving Wire Center).
• Interoffice Mileage - Connects the SWC directly to the ATM switch SWC, when applicable.
• User-to-Network Interface or Network-to-Network Interface - Port connections into the ATM switch.
• PVCs - Connect one or more virtual paths or circuits from one port to another through the ATM switch.

To use Sprint ATM with Asymmetric Digital Subscriber Line (ADSL) services, you must have a Session Management System element, which directs Internet sessions to the proper Internet Service Provider (ISP) path.

Here is how it works:

Business Applications

• Provides efficient transmission of Digital Subscriber Line (DSL) traffic to the Internet.
• Provides efficient transmission of large volumes of data, voice, and video to one or multiple points.
• Uses added or enlarged Permanent Virtual Circuits (PVCs) for future growth without having to build new connections.