Measurement and Billing 5.6.1 For billing purposes, each Party shall pass Calling Party Number (“CPN”) information on each call carried over the Traffic Exchange Trunks at such time as the originating switch is equipped for SS7 and from all switches no later than December 31, 1998. At such time as either Party has the ability, as the Party receiving the traffic, to use such CPN information to classify on an automated basis traffic delivered by the other Party as either Local Traffic or Toll Traffic, such receiving Party shall bill the originating Party the Local Traffic termination rates, Intrastate Exchange Access rates, or Interstate Exchange Access rates applicable to each minute of Traffic for which CPN is passed, as provided in Exhibit A and applicable Tariffs.
5.6.2 If, under the circumstances set forth in subsection 5.6.1, the originating Party does not pass CPN on up to ten percent (10%) of calls, the receiving Party shall bill the originating Party the Local Traffic termination rates, Intrastate Exchange Access rates, Intrastate/Interstate Transit Traffic rates, or Interstate Exchange Access rates applicable to each minute of traffic, as provided in Exhibit A and applicable Tariffs, for which CPN is passed. For the remaining up to ten percent (10%) of calls without CPN information, the receiving Party shall bill the originating Party for such traffic as Local Traffic termination rates, Intrastate Exchange Access rates, Intrastate/Interstate Transit Traffic rates, or Interstate Exchange Access rates applicable to each minute of traffic, as provided in Exhibit A and applicable Tariffs, in direct proportion to the minutes of use of calls passed with CPN information.
5.6.3 If the originating Party does not pass CPN on more than ten percent (10%) of calls, or if the receiving Party lacks the ability to use CPN information to classify on an automated basis traffic delivered by the other Party as either Local Traffic or Toll Traffic, and the originating Party chooses to combine Local and Toll Traffic on the same trunk group, it will supply an auditable Percent Local Use (“PLU”) report quarterly, based on the previous three months’ traffic, and applicable to the following three months. If the originating Party also chooses to combine Interstate and Intrastate Toll Traffic on the same trunk group, it will supply an auditable Percent Interstate Use (“PIU”) report quarterly, based on the previous three months’ terminating traffic, and applicable to the following three months. In lieu of the foregoing PLU and/or PIU reports, the Parties may agree to provide and accept reasonable surrogate measures for an agreed-upon interim period.
5.6.4 Measurement of billing minutes for purposes of determining terminating compensation shall be in conversation seconds.
Material Customers and Suppliers Schedule 4.20 sets forth a list of the names of (a) (i) the ten (10) largest customers of each of the STD Business and MED Business (taken as whole, and as measured by revenue) and (ii) the ten (10) largest suppliers, vendors, and service providers by dollar volume of each of the STD Business and MED Business (taken as whole and as measured by revenue), for the twelve (12) month period ended December 31, 2013 and (b) (i) the ten (10) largest customers of each of the STD Business and the MED Business (taken as whole, and as measured by revenue) for the eleven (11) month period ended November 30, 2014 and (ii) the ten (10) largest suppliers, vendors, and service providers by dollar volume of each of the STD Business and MED Business (taken as whole and as measured by revenue), for the ten (10) month period ended October 31, 2014 (each such customer required to be listed on Schedule 4.20, a "Material Customer," and each such supplier, vendor or service provider required to be listed on Schedule 4.20, a "Material Supplier"). During the twelve (12) months prior to the date of this Agreement (A) no Material Customer or Material Supplier has terminated or Threatened to terminate its relationship with the Company, Newco or a Sold Subsidiary, as applicable, (B) no Material Customer or Material Supplier has materially decreased or limited, or, to the Company's Knowledge, Threatened to materially decrease or limit, the services (including lead times), supplies or materials supplied to or purchased from the Company, Newco or a Sold Subsidiary, as applicable, (C) no Material Customer or Material Supplier has materially changed or Threatened to materially change, its business relationship, pricing or terms and conditions of purchase or sale, as the case may be, with the Company, Newco or any Sold Subsidiary, (D) no Material Customer has materially accelerated its purchasing or otherwise made any purchases materially outside of the ordinary course, due to a discontinuation of any product line of the Company, Newco or any of the Sold Subsidiaries, any announced, communicated or anticipated change in pricing or other material terms, and (E) no Material Customer has notified the Company, Newco or any Sold Subsidiary in writing that the Company, Newco or any Sold Subsidiary is required to re-qualify under any customer program of any Material Customer. To the Company's Knowledge, there is not, and, since January 1, 2012, there has not been, any material dispute by and between the Company, Newco or any Sold Subsidiary, on the one hand, and any Material Customer or Material Supplier, on the other hand.
