Service Description. TeleStar99' Network Asynchronous Transfer Mode Service (the "ATM Service") is cell-based switching and multiplexing technology, which can support applications requiring high bandwidth and high performance.

ATM Service will allow Customers who have requirements for high speed, inter-premise connectivity to interconnect their multiple locations via a User Network Interface ("UNI") element from the Customer premise equipment ("CPE") to the TeleStar99' point of presence ("POP"). ATM Service is a general-purpose, connection-oriented technology that provides integration of disparate networks onto a single communications infrastructure. ATM Service provides the capability to route traffic between various end points via virtual circuits that are predefined on the TeleStar99' ATM network and in the CPE.

The Customer is responsible for segmenting information into 53 byte cells for transport across the TeleStar99' ATM network. ATM Service provides networking capabilities suited for high-speed, low delay, bandwidth intensive applications such as voice, video and data that require real-time or near real-time connectivity between multiple locations. In addition, ATM Service shall only be provided with respect to those circuits where the entire circuit shall be located entirely upon the TeleStar99' owned and operated network and both end points of such circuit shall originate or terminate at a TeleStar99 POP.