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® <br />OPT-E-MANService <br />Service Level Objectives and Agreements <br />This document provides information regarding AT&TOPT-E-MAN service and its <br />comprehensive service level objectives as described in the applicable state tariff or guidebook <br />or in the AT&T Interstate Access Guidebook. <br />Introduction <br />® <br />The following Service Level Agreement (SLA) applies to standard OPT-E-MANconfigurations <br />only. SLAs provide customers with end-to-end performance objectives that are backed by <br />service credits if minimum quality standards are not met by AT&T. <br />1.Overall Service <br />® <br />service is provided by the AT&T operating local exchange carrier (“AT&T”) in <br />OPT-E-MAN <br />each respective state, pursuant tothe AT&T Interstate Access Guidebook or to guidebooks <br />or tariffs filed with the state public utilities commissions.The SLA descriptions set forth <br />herein are believed to be accurate as of the date of preparation of this document, but the <br />applicable tariffs or guidebooks are subject to change and the provisions of the applicable <br />tariffs or guidebooks shall control in the event of any conflict between this document and the <br />applicable tariffs or guidebooks.OPT-E-MANservice will be offered with throughput <br />thresholds based on the service configuration provided to the customer.Service availability <br />and performance is subject to technical limitations and available facilities. All service <br />designs will be verified prior to order to help ensure correct provisioning and maintenance. <br />Allowance for Interruption <br />In case of an interruption to service, if not due to the negligence of the customer or the <br />customer’s end useror other causes beyond AT&T’s reasonable control,the customer may <br />be eligible for credit under the terms and conditions of the applicable guidebook or tariff. <br />2.Connections <br />ANetwork Availability Service Level Agreement of at least 99.95% per month, including the <br />local loop, isprovided by AT&T. This equates to not more than 21.6 minutes of downtime <br />per month (based on a 30-day month), excluding maintenance windows and other <br />appropriate exclusions (see Exclusionsfollowing). Network Availability is calculated as the <br />® <br />percentage of time that the OPT-E-MANnetwork is capable of accepting and delivering <br />customer data to the total time in the measurement period. The calculation for Network <br />Availability for a givencalendar month is as follows: <br />Network Availability = <br />[24 hours x days in month x 60 minutes x number of customer sites] – <br />network outage time (measured in minutes) <br />-------------------------------------------------------- <br />[24 hours x days in month x 60 minutes x number of customer sites] <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 1of 5 <br /> <br />