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® <br />OPT-E-MANService <br />network terminating equipment to which the customer ports are attached when the OPT-E- <br />® <br />MANnetwork is available <br />Grades of Service Definitions and SLAs <br />4. <br />Bronze <br />The applications best suited for this Grade of Service are general data applications with <br />more tolerance for delay and/or those that are lower in priority. This Grade of Service is the <br />appropriate selection for general data traffic since it tolerates bursty and time-varying traffic. <br />The service parameters associated with this Grade of Service are Packet Delivery Rate <br />(PDR) and Latency. <br />The Packet Delivery Rate SLA for the Bronze Grade of Service is at least 99.5% of total <br />traffic from source Network Terminating Equipment (NTE) to the destination NTE to which <br />the customer port is attached. <br />The Latency SLA for the Bronze Grade of Serviceis fordelayacrossa connection to beno <br />more than 27ms one-way (54 ms roundtrip)end-to-end within the AT&Tnetwork for packets <br />1500 bytes or less. <br />Silver <br />This Grade of Service supports applications that require minimal loss and low latency <br />variation (jitter). Data in this Grade of Service will be provisioned in a priority queue <br />indicating that it is delay sensitive. The service parameters associated with this Grade of <br />Service are Packet Delivery Rate (PDR), Latency and Jitter. <br />The Packet Delivery Rate SLA for the Silver Grade of Serviceis at least 99.9% of total traffic <br />from source Network Terminating Equipment (NTE) to the destination NTE to which the <br />customer port is attached. <br />The Latency SLA for the Silver Grade of Serviceis fordelay acrossa connectionto beno <br />more than 18 msone-way (36 ms roundtrip)end-to-end within the AT&Tnetwork for packets <br />1500 bytes or less. <br />The Jitter SLA for the Silver Grade of Serviceis for Jitter to be limited to less than 12ms <br />one-way end-to-end within the AT&Tnetwork. <br />SLA MeasurementsBronzeSilver <br />Network Availability99.95%99.95% <br />Packet Delivery Rate (PDR)99.5%99.9% <br />Latency<27 ms one way<18 ms one way <br />JitterN/A<12 ms <br />All parameters of this document and network performance are subject to limitations described in section 1. <br />© <br />2010AT&T Intellectual Property. All rights reserved. AT&T,the AT&T logo and AT&T product names are <br />trademarks of AT&T Intellectual Propertyand/or its affiliates. <br />Page 3of 5 <br /> <br />