PART 6 - Central Office Services 1st Revised Sheet 1 SECTION 7 - Digital Transport Services Replacing Original Sheet 1

PART 6 - Central Office Services 1st Revised Sheet 1 SECTION 7 - Digital Transport Services Replacing Original Sheet 1 Material now appears in Part 20, Section 6, Sheet 18. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 1st Revised Sheet 2 SECTION 7 - Digital Transport Services Replacing Original Sheet 2 Material now appears in Part 20, Section 6, Sheet 19. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 2nd Revised Sheet 3 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 3 Material now appears in Part 20, Section 6, Sheet 20. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 2nd Revised Sheet 4 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 4 Material now appears in Part 20, Section 6, Sheet 21. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 2nd Revised Sheet 5 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 5 Material now appears in Part 20, Section 6, Sheet 22. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 1st Revised Sheet 6 SECTION 7 - Digital Transport Services Replacing Original Sheet 6 Material now appears in Part 20, Section 6, Sheet 23. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 6th Revised Sheet 7 SECTION 7 - Digital Transport Services Replacing 5th Revised Sheet 7 Material now appears in Part 20, Section 6, Sheet 24. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 2nd Revised Sheet 8 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 8 Material now appears in Part 20, Section 6, Sheet 25. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 1st Revised Sheet 9 SECTION 7 - Digital Transport Services Replacing Original Sheet 9 Material now appears in Part 20, Section 6, Sheet 26. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 3rd Revised Sheet 10 SECTION 7 - Digital Transport Services Replacing 2nd Revised Sheet 10 Material now appears in Part 20, Section 6, Sheet 27. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 2nd Revised Sheet 11 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 11 Material now appears in Part 20, Section 6, Sheet 28. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 2nd Revised Sheet 12 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 12 Material now appears in Part 20, Section 6, Sheet 29. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services 6th Revised Sheet 13 SECTION 7 - Digital Transport Services Replacing 5th Revised Sheet 13 Material now appears in Part 20, Section 6, Sheet 30. ATT TN KS-16-0028 Effective: June 30, 2016

PART 6 - Central Office Services Original Sheet 14 SECTION 7 - Digital Transport Services DIGITAL LOOP LOCAL EXCHANGE ACCESS PBX SERVICE A. Descriptive Summary Provides access to and utilization capability of the public switched network distinguished by permitting digital signals to be transmitted and received to and from a digital PBX located on the customer's premises and its serving central office. B. General All rates, charges, terms and conditions set forth herein provide for the furnishing of service where suitable facilities are available and do not create an obligation of the Company to construct facilities especially for this service. Other service offerings requested by the customer and not detrimental to this service or other services of the Company may be furnished in accordance with the regulations and at the rates and charges specified in the applicable sections of this Guidebook or other service publications of the Company. 1. Service Components Service Line Line Termination Composed of the serving central office exchange access line equipment necessary for entry and exit of the public switched network for both long-distance service and for local exchange calling appropriate to the calling option selected by the customer. Service Line Digital Transmission Loop Arrangement Composed of a digital, multichannel transmission path, its related transmission equipment, and the associated network interface device. Each arrangement provides two-way transmission for a capacity of up to 24 line terminations. Integrated Services Digital Circuit Switched Voice (CSV)/Circuit Switched Data (CSD) Transport Utilization made of the public switched network for the origination of local exchange services calling. 2. Regulations a. The following regulations are in addition to other regulations as stated in this and other service publications of the Company. For the purposes of this service, when such other regulations apply on a "per line" basis, they shall be interpreted in this instance as applying on a "per line termination" basis. b. Digital Loop Local Exchange Access PBX Service is furnished subject to the availability of facilities and only within a LATA. Loop Protection as provided in Paragraph D of the Digital Loop Service offer in this Guidebook is an optional feature also available to existing Digital PBX Service customers at the same rates, terms, and conditions as available to Digital Loop Service customers. ATT TN KS-13-0053 Effective: July 1, 2013

PART 6 - Central Office Services Original Sheet 15 SECTION 7 - Digital Transport Services DIGITAL LOOP LOCAL EXCHANGE ACCESS PBX SERVICE (Cont d) B. General (Cont d) 2. Regulations (Cont d) c. Digital Loop Local Exchange Access PBX Service is offered with calling scopes as may be defined in Part 4, Section 1. d. Exchange access line rates and charges, as specified in Part 4, Section 2 are not applicable to this service. Other rates and charges for associated services which normally would apply on a per line basis, will apply on a per line termination basis. e. Each Digital Transmission Loop Arrangement can contain both DID and non-did line terminations. The customer must initially indicate the specific location of each line termination within the multichannel transmission path. Subsequent change in this configuration will result in the application of appropriate charges expressed in paragraph C. f. Service provided under this Guidebook contemplates that the customer's requested service location is within the base rate area of the normal serving central office. Requests for Digital Transmission Loop Arrangements extending beyond the normal serving central office base rate area, when feasible, may be furnished as a Special Assembly of Equipment with charges based on costs. Intrastate, IntraLATA Foreign Serving Office/Foreign Exchange Line Terminations, if requested by the customer and agreed to by the company, may be furnished pursuant to Part 4, Section 3 on a per channel basis. g. Customer relocations resulting in a change in central office designation will be considered a disconnection and connection of new service. h. Except as otherwise noted, the minimum service period is 30 days. i. Except for the Local Exchange Usage portion of this service, the temporary suspension of service provisions are not applicable. j. No performance guarantee is made or implied beyond those associated with the normal provisioning of Local Exchange Service. k. Synchronization of the digital network will be provided in accordance with: TA-NPL-000436 ANSI T1.101-1987 TR-NPL-000275 Digital Synchronization Network Plan Synchronization Interface Standards for Digital Networks Synchronization of the IntraLATA Digital Network ATT TN KS-13-0053 Effective: July 1, 2013

PART 6 - Central Office Services Original Sheet 16 SECTION 7 - Digital Transport Services DIGITAL LOOP LOCAL EXCHANGE ACCESS PBX SERVICE (Cont d) C. Rates and Charges 1. Application of Rates and Charges Service components of Digital Loop Local Exchange Access PBX Service are not offered separately, nor independent of one another. 2. Schedules Monthly Installation Charge USOC Rate Init. Unit Addl. Unit /2/ Service Line Line Termination, each /3/ Inbound, Non-DID /DLT1X/ $5.00 - - Inbound, DID /DQT1X/ 5.00 - - Outbound /DLTOX/ 5.00 - - Inbound/Outbound /DLTCX/ 5.00 - - Special Hotel/Motel /DHT/ 5.00 - - Digital Transmission Loop Arrangement Payment Option 1 /4/ Payment Option 2 /5/ Per Arrangement /DLS/ 135.00 $15,500.00 $15,100.00 Per Line Termination Activated Non-DID type, each /DZA1X/ 1.80 440.00 380.00 DID type, each /DZADX/ 1.70 430.00 370.00 Per Line Termination and Channel Location Changed or Rearranged /MVM/ - 140.00 95.00 Loop Protection is available at the same rates, terms, and conditions as outlined in Digital Loop Service of this Guidebook. /2/ Additional Unit Charge applies only when requested by the customer at the same time as Initial Unit. /3/ Service Connection Charge applies. /4/ Effective March 24, 1992, customers whose arrangements are provided under Payment Option 1, must convert their service to Digital Loop Service. All existing minimum term and termination charge requirements will be waived. /5/ Obsolete - limited to existing installations at existing locations for existing customers, except additional line terminations and activations may be permitted to the extent spare capacity is available on existing arrangements. ATT TN KS-13-0053 Effective: July 1, 2013

PART 6 - Central Office Services Original Sheet 17 SECTION 7 - Digital Transport Services DIGITAL LOOP LOCAL EXCHANGE ACCESS PBX SERVICE (Cont d) C. Rates and Charges 2. Schedules (Cont d) Integrated Services Digital Circuit Switched Voice (CSV)/Circuit Switched Data (CSD) Transport Options The following rate elements provide for digital CSV/CSD transport through central office switching equipment. These rate elements are for Local Exchange usage. Each rate element shall constitute a local exchange access arrangement and shall be counted in combination with those of Part 4, Section 2. These CSV/CSD local service elements are offered only in connection with services provided under this Guidebook, and not offered on a stand-alone basis. Service Components Business Trunk Equivalent, Flat Rate Usage Digital PBX Service Compatible, each All Rate Groups /2/ Message Rate Hotel Trunk Equivalent /3//4/ Rate Groups 1-8 /2/ Basehor EAS to Kansas City Metropolitan Exception Monthly Rates Business Trunk Equivalent, Digital Loop Service Compatible, each Rate Schedule 4+ /5/, Paola Exchange Rate Schedule 4+ /5/, Abilene Exchange Rate Schedule 5+ /5/, DeSoto Exchange Hotel Trunk Equivalent, Digital Loop Service Compatible, each Rate Schedule 4+ /5/, Paola Exchange Rate Schedule 4+ /5/, Abilene Exchange Rate Schedule 5+ /5/, DeSoto Exchange Monthly Rate $19.75 -- 17.75 19.75 19.75 19.75 1.35.15.75 Integrated Services Digital Circuit Switched Voice (CSV)/Circuit Switched Data (CSD) Transport Options are not applicable with tie line service. /2/ For Rate Group Classifications, see Part 4, Section 2. /3/ This service offering is subject to the availability of necessary facilities. /4/ Each local message is $.06. The hotel or motel company guarantees that for each trunk installed, the local message revenue accruing to AT&T Kansas each month shall equal the Hotel/Motel Measured Trunk rate as shown in Part 4, Section 2. /5/ Rate Schedule (+) indicates applicable rate schedule plus increments for provision of Extended Area Service (EAS). ATT TN KS-13-0053 Effective: July 1, 2013

PART 6 - Central Office Services 1st Revised Sheet 18 SECTION 7 - Digital Transport Services Replacing Original Sheet 18 Material now appears in Part 20, Section 6, Sheet 31. ATT TN KS-16-0036 Effective: November 1, 2016

PART 6 - Central Office Services 1st Revised Sheet 19 SECTION 7 - Digital Transport Services Replacing Original Sheet 19 Material now appears in Part 20, Section 6, Sheet 32. ATT TN KS-16-0036 Effective: November 1, 2016

PART 6 - Central Office Services 1st Revised Sheet 20 SECTION 7 - Digital Transport Services Replacing Original Sheet 20 Material now appears in Part 20, Section 6, Sheet 33. ATT TN KS-16-0036 Effective: November 1, 2016

PART 6 - Central Office Services 2nd Revised Sheet 21 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 21 Material now appears in Part 20, Section 6, Sheet 34. ATT TN KS-16-0036 Effective: November 1, 2016

PART 6 - Central Office Services 2nd Revised Sheet 22 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 22 Material now appears in Part 20, Section 6, Sheet 35. ATT TN KS-16-0036 Effective: November 1, 2016

PART 6 - Central Office Services 2nd Revised Sheet 23 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 23 Material now appears in Part 20, Section 6, Sheet 36. ATT TN KS-16-0036 Effective: November 1, 2016

PART 6 - Central Office Services 2nd Revised Sheet 24 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 24 Material now appears in Part 20, Section 6, Sheet 37. ATT TN KS-16-0036 Effective: November 1, 2016

PART 6 - Central Office Services 3rd Revised Sheet 25 SECTION 7 - Digital Transport Services Replacing 2nd Revised Sheet 25 Material now appears in Part 20, Section 6, Sheet 38. ATT TN KS-16-0036 Effective: November 1, 2016

PART 6 - Central Office Services 2nd Revised Sheet 26 SECTION 7 - Digital Transport Services Replacing 1st Revised Sheet 26 Material now appears in Part 20, Section 6, Sheet 39. ATT TN KS-16-0036 Effective: November 1, 2016