Wave Business Solutions LLC 7/19/2016

;,` EXHIBIT B a ti Service Level Agreement t for 1 Ultra High Availability i NW1.4.-A Dark Fiber Services This Service Level Agreement for Ultra High Availability Dark Fiber Services (this "SLA") is a part of the Master Services Agreement for Enterprise Services("MSA")between Wave Business Solutions,LLC("WAVE")and Customer. 1. AVAILABILITY SLA WAVE's dark fiber paths are designed to provide a target Availability of at least 99.9% per calendar month. If the Availability target is not met with respect to a given dark fiber path in a given calendar month,Customer will be entitled to a credit in the amount set forth below,which must be claimed as described in this SLA. Customer credits for Outages of Dark Fiber Services are calculated on an individual path basis,and the amount of any credit is based on the portion of MRC allocable to the affected dark fiber path. Customer Credit Duration of Unavailability as%of MRC for the applicable Dark Fiber Path* Less than 45 minutes Target Met 45 Min.up to 8 hours 5% >8 hours up to 16 hours 10% >16 hours up to 24 hours 20% >24 hours 35% 2. MEAN TIME TO RESTORE("MTTR")SLA In the event of Outages in the Services, WAVE's NOC is designed to provide a MTTR of no greater than 4 hours. If the target MTTR is not met for a particular dark fiber path in a given calendar month, and Customer receives a Service from WAVE on the path at issue,then Customer shall be entitled to remedies set forth in the table below,which must be claimed as described in this SLA. Customer Credit Target MTTR Actual MTTR as%of MRC for the applicable Path 5 4 Hrs. Target Met 4 hr MTTR >4 Hrs.to 6 Hrs. 5% >6 Hrs.to 8 Hrs. 10% >8 Hrs. 25% 3. CHRONIC OUTAGE If Customer experiences a Chronic Outage with respect to a Service, Customer shall have the right to elect either of the following remedies,which must be claimed as described in this SLA: (i)substitute a different Service or a different path for the Service that experienced the Chronic Outage without incurring any Termination Charge or installation fees; or (ii)terminate the affected Service for the path that experienced the Chronic Outage without incurring any Termination Charge. 4. DEFINITIONS For purposes of this SLA the following terms shall have the meanings set forth below. "Availability" means the dark fibers at issue are available to and accessible by Customer at the specified locations, are capable of transmitting signals and can otherwise be used by Customer. Availability does not involve the quality of data Exhibit B: Service Level Agreement for Ultra High Availability Dark Fiber Services pg.1 Wave Business Solutions,LIC Updated: 10/13/2014