PART 1 - Preface 8th Revised Page 2 SECTION 3 - Table of Contents

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1 PART 1 - Preface 8th Revised Page 2 SECTION 3 - Table of Contents PART SECTION SECTION NAME 4 Provisions - Common 1 Section Not in Use 2 General Conditions 3 Section Not in Use 4 Section Not in Use 5 Section Not in Use 6 Section Not in Use 7 Section Not in Use 8 Section Not in Use 9 Section Not in Use 10 Section Not in Use 11 Section Not in Use 12 Section Not in Use 13 Labor, Testing and Billing Media 5 Special Access Services - Common 6 Special Access Services - Midwest 1 AT&T Dedicated Ethernet 2 Section Not in Use 3 Section Not in Use 4 AT&T Switched Ethernet Service 5 Advanced Services 1 Section Not in Use 2 Section Not in Use 3 Section Not in Use 4 Section Not in Use 5 Section Not in Use 6 Section Not in Use 7 Special Access Services 8 Section Not in Use 9 Section Not in Use 10 Federal Government Services 11 Section Not in Use 12 Section Not in Use 13 Section Not in Use 14 Section Not in Use 15 Section Not in Use 16 Ameritech Interconnection Services 17 Section Not in Use 18 Section Not in Use 19 Section Not in Use 20 Section Not in Use 21 MSA Access Services 22 Section Not in Use 23 Multi-service Optical Network (MON) 24 OPT-E-MAN 25 Section Not in Use 26 DecaMAN 27 WaveMAN SM 28 Section Not in Use

2 PART 2 - Provisions - Midwest, West, Southwest 1st Revised Page 79 Diplexed - The term "diplexed" denotes the simultaneous transmission of multiple signals over a single channel. Direct Inward Dialing - a trunk side termination, at the first point of switching, that permits the Central Office Switch to deliver all or part of the called number to the customer premises at the time the call is established. Direct-Trunked Transport - Switched Transport provided between the customer's serving wire center and a Telephone Company end office, hub or tandem or between a hub or tandem and an end office on circuits dedicated to the use of a single customer without switching at an access tandem. Direct-Trunked Transport Facility - A Switched Access transport facility used for Direct-Trunked Transport. Directory Assistance - Denotes the provision of access to a Directory Assistance Location and a Telephone Company Directory Assistance operator. Directory Assistance Location (Interstate) - a Telephone Company office where Telephone Company equipment first receives the Directory Assistance call from a customer's end user and selects the first available operator position to respond to the Directory Assistance call. Directory Number (DN) - denotes a unique NPA-NXX-XXXX assigned to a subscriber of a Local Service Provider. Distribution Area (DA) denotes an area within a wire center, generally behind a feeder interface providing service to customers. There are numerous DA's within a wire center with boundaries adjoining other DA's. Boundary lines for DA's are generally streets, streams, some kind of physical divider. Donor Switch - denotes the original switch source of an NXX that has been designated as portable and from which a subscriber has moved their service, while retaining their Directory Number, to a different service provider s switch. Dual Gateway Network Element - Denotes the network element that is capable of supporting two access ports to the data communication channel which is used to transport messages within the SONET network. (See Gateway Network Element.) Dual Tone Multifrequency Address Signaling - a type of signaling that is an optional feature of Switched Access Feature Group A (FGA) or Access Line Arrangement (ALA). It may be utilized when FGA or ALA is being used in the terminating direction (from the point of interface with the customer to the local exchange end office). An office arranged for Dual Tone Multifrequency Signaling would expect to receive address signals from the customer in the form of Dual Tone Multifrequency signals. Echo Control - the control of reflected signals in a telephone transmission path. Echo Path Loss - the measure of reflected signal at a four-wire point of interface without regard to the send and receive Transmission Level Point. Echo Return Loss - a frequency weighted measure of return loss over the middle of the voiceband (approximately 500 to 2500 Hz), where talker echo is most annoying.

3 PART 3 - Provisions - Southeast 1st Revised Page 9.1 ACCESS SERVICE 2.1 Undertaking of the Telephone Company 2 - General Conditions (M) (M) Material now appears in Part 4, Section 2, Page 2.

4 PART 3 - Provisions - Southeast 1st Revised Page Definitions Detail Billing ACCESS SERVICE 2 - General Conditions The term "Detail Billing" denotes the listing of each message and/or Rate element for which charges to a customer are due on a bill prepared by the Telephone Company. Distribution Area (DA) Denotes an area within a wire center, generally behind a feeder interface providing service to customers. There are numerous DA's within a wire center with boundaries adjoining other DA's. Boundary lines for DA's are generally streets, streams, some kind of physical divider. DS0 This denotes a channel service expressed in terms of its digitally encoded data bit rate in accordance with the North American hierarchy of digital signal levels. It is generally referred to as having a 64 Kbps transmission data rate signal. The required format and interface specifications are contained in BellSouth Technical Reference TR-NWT DS1 This denotes a channel service expressed in terms of its digitally encoded data bit rate in accordance with the North American hierarchy of digital signal levels. It has a Mbps transmission data rate, and provides for the two-way simultaneous transmission of isochronous timed, Bipolar Return-to-Zero (BPRZ) bit stream format except where intentional bipolar violations are introduced by Bipolar with 8 Zero Substitution (B8ZS) format. Unframed signal formats are not permitted or compatible with Company equipment. The required format and interface specifications are contained in BellSouth Technical Reference TR-NPL Effective 2-Wire The term "Effective 2-Wire" denotes a condition which permits the simultaneous transmission in both directions over a channel, but it is not possible to ensure independent information transmission in both directions. Effective 2-wire channels may be terminated with 2-wire or 4-wire interfaces. Effective 4-Wire The term "Effective 4-Wire" denotes a condition which permits the simultaneous independent transmission of information in both directions over a channel. The method of implementing effective 4-wire transmission is at the discretion of the Telephone Company (physical, time domain, frequency-domain separation or echo cancellation techniques). Effective 4-wire channels may be terminated with a 2-wire interface at the customer's premises. However, when terminated 2-wire, simultaneous independent transmission cannot be supported because the two wire interface combines the transmission paths into a single path.

5 PART 4 - Provisions - Common 1st Revised Page Cost Assessment Charge (CAC) GENERAL CONDITIONS A Cost Assessment Charge is assessed on a percentage basis against all billed revenue for business Customers subscribing to the transport services listed below. The CAC is established to recover property taxes. This charge is not a tax or fee that the government requires AT&T to collect from Customers. The CAC will not apply to Federal, State or Local Government Accounts, or to any accounts identified in the billing systems of the Telephone Company as being exempt from application of the Federal Universal Service Fund (FUSF). Description Transport services - Optical Carrier Network (OCN) Point-to-Point Service - Gigabit Ethernet Metropolitan Area Network (GigaMAN) - AT&T Switched Ethernet Service - AT&T Dedicated Ethernet Service - Optical Ethernet Metropolitan Area Network (OPT-E-MAN) - Customized Switched Metropolitan Ethernet (CSME) - 10 Gigabit Ethernet Metropolitan Area Network (DecaMAN) - BellSouth Metro Ethernet Service - BellSouth Wavelength Channel Service - High Capacity Service (LightGate SONET Service) Cost Assessment Charge (CAC) Monthly Rate Alabama 1.87% Arkansas 1.27% California 0.99% Florida 1.74% Georgia 0.00% Illinois 0.70% Indiana 1.57% Kansas 2.37% Kentucky 0.00% Louisiana 0.00% Michigan 1.15% Mississippi 1.72% Missouri 1.51% Nevada 1.08% North Carolina 1.06% Ohio 0.00% Oklahoma 1.24% South Carolina 2.85% Tennessee 1.47% Texas 1.56% Wisconsin 2.00%

6 PART 4 - Provisions - Common Original Page 2 GENERAL CONDITIONS 2.2 TDM to IP Transition As a result of evolving network technology, the Telephone Company is able to offer new, advanced services. At the same time, certain older services will no longer be available in some geographic areas, as those services are no longer technically or economically feasible. The table below identifies services that have been withdrawn, by wire center and exchange, along with additional information related to these service withdrawals. (A) Withdrawn Services Effective September 20, 2017 (M) - Product Name Part/Section Wire Center Exchange Other Information Paragraph Part 13, Section 7 - Metallic (aka BellSouth SPA Metallic) Service Telegraph Grade (aka BellSouth SPA Telegraph) Service Voice Grade (aka BellSouth SPA DS0 VG) Service Program Audio (aka BellSouth SPA Program Audio) Service Digital Data Access (aka BellSouth SPA DS0 Digital Data) Service High Capacity (aka BellSouth SPA High Capacity) Service (at 64.0 kbps, and Mbps) - Derived Data Channel (aka BellSouth SPA Derived Data Channel) Service (M) (M) Material formerly appeared in Part 3, Section 2, Original Page 9.1

7 PART 4 - Provisions - Common Original Page TDM to IP Transition (Cont'd) (Cont'd) GENERAL CONDITIONS (B) Withdrawn Services Effective August 6, Product Name Part/Section Wire Center Exchange Other Information Paragraph Part 13, Section 7 - Metallic (aka BellSouth SPA Metallic) Service Telegraph Grade (aka BellSouth SPA Telegraph) Service Voice Grade (aka BellSouth SPA DS0 VG) Service Program Audio (aka BellSouth SPA Program Audio) Service Digital Data Access (aka BellSouth SPA DS0 Digital Data) Service High Capacity (aka BellSouth SPA High Capacity) Service (at 64.0 kbps, and Mbps) - Derived Data Channel (aka BellSouth SPA Derived Data Channel) Service

8 PART 13 - Competitive BDS Services - Southeast 1st Revised Page 4 SECTION 23 - Metropolitan Statistical Areas (MSAs) ACCESS SERVICE 23 Metropolitan Statistical Area Access Services (Cont d) 23.3 Services Available in an MSA Refer to Part 4, Section 2, paragraph 2.2 TDM to IP Transition, for service availability. The following services are available in MSA s with Full or Limited Service Relief: Special Access (a.k.a. BellSouth SPA) Services (1) - Metallic (a.k.a. BellSouth SPA Metallic) - Telegraph Grade (a.k.a. BellSouth SPA Telegraph) - Voice Grade (a.k.a. BellSouth SPA VG) (3) - WATS Access Line (WAL) (a.k.a. BellSouth SPA WATS Lines) - Program Audio (a.k.a. BellSouth SPA Program Audio) (3) - Broadcast Quality Video (a.k.a. BellSouth SPA Broadcast Quality Video) (3) - BellSouth SPA Modular Video Transport Service - Uncompressed Switched Video (a.k.a. BellSouth SPA Uncompressed Switched Video) - Derived Data Channel (a.k.a. BellSouth SPA Derived Data Channel) - Digital Data Access Service (a.k.a. BellSouth SPA DS0 Digital Data) - High Capacity (a.k.a. BellSouth SPA High Capacity) - DS1 (a.k.a. BellSouth SPA DS1) - LightGate svc.(a.k.a. BellSouth SPA Point to Point) - SMARTPath svc.(a.k.a. BellSouth SPA DS1 & DS3 Shared Ring) - BellSouth Customer Network Management Service - Dry Fiber (2) (1) Effective August 25, 2011, BellSouth SPA Modular Video Transport Service is no longer available to new Customers. There is no change for existing Customers. (2) Effective January 1, 2011, Dry Fiber is no longer available to new Customers. There is no change for existing Customers. (3) Effective November 5, 2016, Voice Grade (a.k.a. BellSouth SPA DSO VG), Program Audio (a.k.a. BellSouth SPA Program Audio), and Broadcast Quality Video (a.k.a. BellSouth SPA Broadcast Quality Video) services in the Carbon Hill, Alabama and Kings Point, Florida Telephone Company wire centers are no longer available.

9 - BellSouth Directory Assistance Access (D) (D)

Four AT&T Plaza, Dallas, Texas 75202 2ND REVISED PAGE 9-1 CANCELS 1ST REVISED PAGE 9-1 ISSUED: APRIL 6, 2015 EFFECTIVE: APRIL 21, 2015 9 - BellSouth Directory Assistance Access (D) (D) 9.1 BellSouth Directory