MCI COMMUNICATIONS SERVICES, INC. WV-PSC Tariff No. 1 d/b/a VERIZON BUSINESS SERVICES Original Page No. 31

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d/b/a VERIZON BUSINESS SERVICES Original Page No. 31 SECTION A - DEFINITION OF TERMS For the purpose of this tariff, the following definitions shall apply: Access Coordination Provides for the design, ordering, installation coordination, pre-service testing, service turn-up and maintenance on an MCI WORLDCOM - or customer-provided local access channel. Access coordination does not apply to AT&T CCSA/EPSCS switch connections. Access Line A dedicated arrangement which connects a customer location to an MCI WORLDCOM terminal location or an MCI WORLDCOM switching center. Administrative Change The modification of an existing circuit, dedicated access line or port, at the request of the customer, that involves changes to authorization codes, speed numbers, route guide, consolidation of billing within Dedicated Leased Line Service, verification of testing performed by parties other than MCI WORLDCOM, or any other administrative change not covered by a Billing Record Change. (See below for definition.) Application for Service A standard MCI WORLDCOM order form which includes all pertinent billing, technical and other descriptive information which will enable MCI WORLDCOM to provide a communication service as required. Attenuation Distortion The difference between the amount of power lost at certain frequencies compared to the power lost at a frequency of 1004 Hz. Used in connection with C-type conditioning. Authorization Code A five-digit code or 7-digit code, one or more of which are available to Metered Use Service customers to enable them to identify individual users or groups of users, and thereby allocate the costs of their long distance service. Bandwidth The total frequency band, in hertz, allocated for a channel. Billing Record Change A change in customer billing address.

d/b/a VERIZON BUSINESS SERVICES Original Page No. 32 Calling Circle As used in conjunction with the Friends & Family Program, a Calling Circle includes U.S. telephone numbers (excluding Puerto Rico and the U.S. Virgin Islands) including the number of the subscriber which is presubscribed to MCI WORLDCOM and enrolled in Metered Use Service Option A (Dial One/Direct Dial). As used in conjunction with the Friends of the Firm Program, a Calling Circle is a group of up to twenty (20) U.S. telephone numbers and which numbers are presubscribed to MCI WORLDCOM, plus the Subscriber's own telephone number or numbers. Telephone numbers which are not capable of being presubscribed to an interexchange carrier, and telephone numbers which are associated with MCI 800 Service (other than those associate with the Personal 800 option), payphones, and MCI WORLDCOM services other than switched services will not be eligible for inclusion in Calling Circles. These Calling Circles may be amended by the Subscriber, from time to time. Cancellation of Order A customer initiated request to discontinue processing a service order, either in part or in its entirety, prior to its completion. Cancellation charges will be assessed for each circuit-end or dedicated access line canceled from an order prior to its completion by MCI WORLDCOM, under the following circumstances: (l) if the local Telco has confirmed in writing to MCI WORLDCOM that the circuit-end or dedicated access line will be installed; or (2) if MCI WORLDCOM has already submitted facilities orders to an interconnecting telephone company. (This differs from a Disconnection, see page 6 for definition.)

d/b/a VERIZON BUSINESS SERVICES Original Page No. 33 Central Office Connection (CDC) Connects the Inter-Office Channel (as defined herein) of a Dedicated Leased circuit to the Local Access Channel (as defined herein). Channel or Circuit A communications path between two or more points, having a bandwidth or transmission speed selected by a customer. Channel Bank (24 or 44) A device that converts Analog voice frequency channels into digital formats multiplexed these channels and/or data channels into a 1.544 mbps digital signal. Channel Options Features which can be added to a local access channel to change and/or augment its transmission characteristics. Typical channel options are signaling and data conditioning. Channel Termination The point at which MCI WORLDCOM's channel originates, terminates, or drops for the insertion or removal of a customer's signal. CCSA An arrangement for switched service networks in which common control MCI WORLDCOM switching machines are used to switch network trunks. The switching machines may be shared with other users. Casual Caller Denotes any person who uses the Company service from an equal access end office who does not have a current account with the Company for services subject to this tariff, to include: (i) any person who has not established an account with the Company who places calls over the Company's network from an equal access area; (ii) any presubscribed customer located in an equal access area who has either voluntarily terminated his Company account or has had his Company account terminated in accordance with the terms and conditions set forth in Sections B-5 and B-11 ; and (iii) new or allocated customers whose accounts are not yet established in the Company's billing system.

d/b/a VERIZON BUSINESS SERVICES Original Page No. 34 Collect Call A billing arrangement which bills the charge for a long distance call to the called station's telephone number. The person agreeing to accept the call, whether they are an MCI WORLDCOM customer or not, is responsible for all charges related to the call. Regardless of whether the person is an MCI WORLDCOM customer or not, he or she is subject to the provisions of this tariff which are applicable to the call accepted. Company MCI WORLDCOM Communications, Inc. Commercial Service A switched network service which provides for dial station originations for which the subscriber pays a rate that is described as a business or commercial rate in the applicable local exchange service tariff for switched service. Customer The person, firm, corporation or other entity which orders service -- either for its own use, as a resale carrier, or as a non-profit manager of a sharing group -- and which is responsible for the payment of charges and for compliance with MCI WORLDCOM tariff regulations. For billing purposes, a customer is considered to be an account. In the Metered Use Services, if a person, firm, corporation or other entity orders the service in more than one MCI WORLDCOM originating city, or requests the assignment of more than one account number in a particular city, each such account is a separate customer for billing purposes. A customer may also function as a Casual Caller as defined in this tariff. Customer-Provided Terminal Equipment Terminal equipment, as defined herein, provided by a customer.

d/b/a VERIZON BUSINESS SERVICES Original Page No. 35 DSU (Data Service Unit) A device that connects a customer's data terminal equipment to the 4-wire Local Access Channel of the Digital Data Service. Disconnection The disconnection of a circuit, dedicated access line or port connection being used for existing service. (This differs from a Cancellation; see page 5 for definition). Envelope Delay Distortion Denotes a measure of the linearity of the phase versus frequency of a channel. It is the`maximum variation over a band of frequencies of the envelope delay, which is the derivative of the phase with respect to frequency. Used in connection with C-type conditioning. Exemption Certification A written notification provided by the customer certifying that his or her dedicated facility should be exempted from the monthly Special Access Surcharge because (a) the facility terminates in a device not capable of interconnecting MCI WORLDCOM's service with the local exchange network or (b) the facility is associated with a Switched Access Service that is subject to Carrier Common Line Charges. Credit provisions are available, as detailed in Section B-7.07. Expedite A service order initiated at the request of the customer, plus the accompanying installation or change to related circuits, that is processed in a time period shorter than the MCI WORLDCOM standard service interval.

d/b/a VERIZON BUSINESS SERVICES Original Page No. 36 SECTION A - DEFINITION OF TERMS (CONT.) Four-Wire Circuit A circuit using two one-way transmission paths, which include two carrier paths and two wire-pairs. Inside Wiring The definition of Inside Wiring is as set forth in Part 68 of the FCC Rules and Regulations. Inside wiring is used in connection with Terrestrial Digital Service and Digital Data Service local access channels only. Installation The connection of a circuit, dedicated access line or port for new or additional service. Intermodulation Distortion A measure of the non-linearity of a channel used in connection with D-type conditioning. Inter-Office Channel (IDC) The long-haul portion of a dedicated circuit that connects two or more points of presence (as defined herein) in distant cities. Inter-Office Conditioning Special adjustments made to the long-haul portion of a dedicated circuit (required for data circuits only) to assure specific performance levels required for high-speed data transmission. Inter-Office Signaling Signaling (as defined herein) which applies to dedicated circuits carrying voice traffic only. Inter-Office Signaling does not apply to AT&T CCSA/EPSCS inter-machine trunks. Interswitch Trunk A circuit which connects two CCSA switching centers.

d/b/a VERIZON BUSINESS SERVICES Original Page No. 37 SECTION A - DEFINITION OF TERMS (CONT.) Joint Users A person, firm or corporation designed by the customer as a user of communication facilities furnished to the customer by MCI WORLDCOM, and to whom a portion of the charge for such facilities are billed under a joint user arrangement. LATA - (Local Access Transport Area) A geographical area established by the U.S. District Court for the District of Columbia in Civil Action No. 17-49, within which a local exchange company provides communications services. Local Access Channel The dedicated line that connects the customer's premise to MCI WORLDCOM's point of presence (as defined herein). Local Access Channels do not apply to AT&T CCSA/EPSCS switch connections.

d/b/a VERIZON BUSINESS SERVICES 1st Revised Page No. 38 Cancels Original Page No. 38 SECTION A - DEFINITION OF TERMS (CONT.) O RESERVED FOR FUTURE USE O ISSUED: July 18, 2008 Effective: August 1, 2008 Sandy Chandler Tariff Manager 5055 North Point Pkwy, 2nd FL Alpharetta, Georgia 30022

d/b/a VERIZON BUSINESS SERVICES 1st Revised Page No. 39 Cancels Original Page No. 39 SECTION A - DEFINITION OF TERMS (CONT.) O RESERVED FOR FUTURE USE O ISSUED: July 18, 2008 Effective: August 1, 2008 Sandy Chandler Tariff Manager 5055 North Point Pkwy, 2nd FL Alpharetta, Georgia 30022

d/b/a VERIZON BUSINESS SERVICES 1st Revised Page No. 40 Cancels Original Page No. 40 SECTION A - DEFINITION OF TERMS (CONT.) O RESERVED FOR FUTURE USE O ISSUED: July 18, 2008 Effective: August 1, 2008 Sandy Chandler Tariff Manager 5055 North Point Pkwy, 2nd FL Alpharetta, Georgia 30022

d/b/a VERIZON BUSINESS SERVICES ORIGINAL PAGE NO. 41 Local Exchange Carrier A company which furnishes exchange telephone service. MCI Communications Services MCI Communicatios Services Inc. and/or one or more Concurring Carriers. MCI Communications Services Inc Metropolitan Area Terminal City Location (called Terminal Location) Locations specified herein where MCI Communications Services Inc maintains a terminal facility for purposes of providing Interexchange Telecommunication Services as described herein.

d/b/a VERIZON BUSINESS SERVICES ORIGINAL PAGE NO. 42 MCI Communications Services Terminal Any location where MCI WORLDCOM provides services as described herein. Member As used in conjunction with the Friends & Family or the Friends of the Firm Programs, a Member is an MCI WORLDCOM customer whose telephone number is included in a Calling Circle. An MCI WORLDCOM customer may be a Member of an unlimited number of Calling Circles. Metered Use Service Preamble Dial One/Direct Dial and Credit Card customers may enroll in the Friends & Family Program and become eligible for discounts in that program in addition to discounts established elsewhere in this section. These customers are subject to the rates and provisions stated below for the Program. Multiline Terminating Device Denotes switching equipment, key telephone type systems or other similar customer premise terminating equipment which is capable of terminating more than one access line. NCTE (Network Channel Terminating Equipment) A device that connects a customer's data terminal equipment to the Local Access Channel of Terrestrial Digital Service. Network Trunks Access lines, interswitch trunks, and circuits connecting services and facilities of MCI WORLDCOM or other carriers to MCI WORLDCOM CCSA switching centers. Non-Qualified Commercial Affinity Group An association or affiliation of business entities whose members/individuals are not organized for the sole purpose to qualify for the discounts described herein. Non-Qualified Residential Affinity Group An association or affiliation of residential users whose members/individuals are not organized for the sole purpose to qualify for the discounts described herein.

d/b/a VERIZON BUSINESS SERVICES ORIGINAL PAGE NO. 43 Off-Network Access Line A local exchange, foreign exchange, or WATS line connecting both incoming and outgoing traffic from an MCI WORLDCOM switched service network to the DDD network. One-Way Transmission The capability of transmission in only one direction. Other Common Carrier A person, firm, corporation or entity which subscribes to MCI WORLDCOM's communication services and facilities and resells these communication services and facilities to the public for profit. Unless otherwise indicated herein, the term "other common carrier" when used in this tariff also means "customer" and includes entities which are brokers of the service (act as intermediaries for the purposes of reselling), those entities which are processors of the service (enhance the value of the service through substantial incurred costs), and those entities which are underlying carriers (own transmission facilities). Physical Change The modification of an existing circuit, dedicated access line or port, at the request of the customer, requiring some physical change or retermination. Point of Presence MCI WORLDCOM's physical presence in a LATA (as defined herein). Locations where MCI WORLDCOM maintains a Terminal Facility for purposes of providing Customized Business Communications Service. Premises The space designated by a customer at its place or places of business for termination of MCI WORLDCOM service, whether for its own communications needs or for the use of its resale customers. In the case of the non-profit sharing group, this term includes space at each sharer's place or places of business, as well as space at the customer's place of business.

d/b/a VERIZON BUSINESS SERVICES ORIGINAL PAGE NO. 44 Qualified Commercial Affinity Group (A) A trade association, representing business entities or individuals within an industry, professional or business classification, or a commercial organization with affiliated franchises, independent agents, independent distributors, or other multiple commercial representatives, or a buying group not organized for the purpose of qualifying for the discounts provided for herein, which meets the following criteria within twelve (12) months of undertaking to qualify and thereafter maintain them, and enters into an agreement with MCI WORLDCOM for the marketing of MCI WORLDCOM's services. The members who have subscribed to MCI WORLDCOM's service through the group must have aggregate billings, net of taxes, promotional credits and surcharges, of at least $20,000 per month attri-butable to Metered Use Service Option A, (Dial One/Direct Dial) Option B (Credit Card) and Option H (Prism Plus), and have average usage per member of at least $35.00 per month attributable to these options. Unless otherwise specified in this tariff or in the agreement, customers' usage of MCI WORLDCOM service under this plan cannot be used to qualify for any other benefits under this tariff or under other arrangements between MCI WORLDCOM and third parties who undertake to market MCI WORLDCOM's services. (B) A trade association representing business entities or individuals within an industry, professional or business classification, or a commercial organization with affiliated franchisees, independent agents, independent distributors, or other multiple commercial representatives, a buying group not organized for the purpose of qualifying for the discounts provided for herein, or a group consisting of business entities or individuals engaged in business in common (e.g. and entity providing a reservation system and its users, an entity and its independent dealerships, a service entity and the businesses to which it provides service under contract, an entity and its major suppliers, etc.) which agrees to meet the following set of criteria within twelve (12) months of undertaking to qualify and thereafter maintain them, and enters into an agreement with MCI WORLDCOM for the marketing of MCI WORLDCOM's services.

d/b/a VERIZON BUSINESS SERVICES ORIGINAL PAGE NO. 45 Qualified Commercial Affinity Group (Cont.) (B) (Cont.) The group's members who have subscribed to MCI WORLDCOM's service through the group must have aggregate billings, net of taxes, promotional credits and surcharges of at least $200,00 per month attributable to Metered Use Service Option A (Dial One/Direct Dial), Option B (Credit Card), Option D (Prism I) and Option H (Prism Plus), and have average usage per member of at least $75.00 per month attributable to these options. Unless otherwise specified in this tariff or in the agreement, customers; usage of MCI WORLDCOM service under this plan cannot be used to qualify for any other benefits under this tariff or under other arrangements between MCI WORLDCOM an third parties who undertake to market MCI WORLDCOM's services. In either case, if a group fails to achieve the prescribed minimums within twelve (12) months of undertaking to qualify or, having qualified, fails for two (2) consecutive months to maintain these minimums it will cease to be a "qualified commercial affinity group" and its members who have subscribed to MCI WORLDCOM's service under Section C-3 will thereupon become subject to the terms applicable to all other customers of MCI WORLDCOM's Metered Use Service Option A (Dial One/Direct Dial), Option B (Credit Card), Option D (Prism I) and/or Option H (Prism Plus). Charges for additional Authorization Codes and Accounting Codes will be waived for all Qualified Commercial Affinity Group customers.

d/b/a VERIZON BUSINESS SERVICES ORIGINAL PAGE NO. 46 Rate Center A specified geographical location used for determining mileage measurements. Redundancy The offering of alternate Interexchange Telecommunication Services which may be provided using one or more different routings, circuits, and/or additional equipment. Residential Service A switched network service which provides for dial station originations for which the subscriber pays a rate that is described as a residential, non-commercial, or non-business rate in the applicable local exchange service tariff for switched service. Restoration The re-establishing of service by rerouting, substitution of component parts, or otherwise, as determined by the carrier(s) involved. Route Diversity Two channels which are furnished partially or entirely over two physically separate routes.

d/b/a VERIZON BUSINESS SERVICES ORIGINAL PAGE NO. 47 Signaling Line status communications between MCI WORLDCOM terminals and/or local exchange carrier central offices, required for voice grade dedicated circuits only. Signaling does not apply to AT&T CCSA/EPSCS switch connections. Signal to Voice Rates The ratio in db of a tone signal to the corresponding noise. Used in connection with D-type conditioning. Special Promotional Offering Special discounts or modifications of its regular service offerings which MCI WORLDCOM may, from time to time, offer to its customers for a particular service. Such offerings may be limited to certain dates, times and locations. Speed Number A signaling arrangement by which a Metered Use Service customer may elect to dial a pre-programmed four-digit number in place of a designated ten-digit number. Subscriber As used in conjunction with the Friends & Family or Friends of the Firm Programs, a Subscriber is an MCI WORLDCOM customer who undertakes to establish a Calling Circle by giving MCI WORLDCOM a list of proposed Members and their telephone numbers (ANIs). An MCI WORLDCOM customer cannot be a Subscriber for more than one Calling Circle. Two-Way Transmission The capability of transmission in either direction or in both directions at once. Two-Wire Circuit A circuit using two one-way carrier transmission paths, plus one wire-pair.