DS3 services remain one of the most popular service interfaces requested by service providers. The Cisco ONS 15454 Enhanced DS3 Interface Cards are a quick and cost-effective solution for DS3 service requirements. The Cisco ONS 15454 DS3 Card, with Enhanced Performance Monitoring, gives service providers improved network visibility, providing them a means of early facility failure detection. It also allows service providers to continue to provide the highest levels of service availability through service guarantees.