Network Disclosure #400
Attachment 1. Exceptions

The following exceptions to the ATM Forum, ATM User-Network Interface Specification Version 3.1 will not be implemented by QWEST at this time. This includes all figures, sketches, and tables associated with the specific section, subsection, or appendix listed below. Modifications will be provided in later updates to this Network Disclosure.

Section 2: Physical Layer Interface Specification
2.3 Physical Layer for 100 Mbps Multimode Fiber Interface
Complete Subsection will not be implemented at this time.
2.5 E3 Physical Interface Layer
Complete Subsection will not be implemented at this time.
2.6 E4 Physical Interface Layer
Complete Subsection will not be implemented at this time.
Section 4: Interim Local Management Interface Specification
  The complete section will not be implemented at this time.
Section 5: UNI Signaling
  The complete section will not be implemented at this time.
Appendix C (Informative): Point-to Multipoint Signaling Procedures Using Separate State Machines
  The complete appendix will not be implemented at this time.
Appendix D: Example Signaling Codings
 

The complete appendix will not be implemented at this time.
Appendix E: Differences with ITU-TS draft Recommendation Q.93B
 

The complete appendix will not be implemented at this time.

The following exceptions to the ATM Forum, ATM CRS Broadband ISDN Inter-Carrier Interface Specification, Version 1.1 will not be implemented by QWEST at this time. This includes all figures, sketches, and tables associated with the specific section, subsection, or appendix identified below. Modifications will be provided in later updates to this Network Disclosure.

Section 3: B-ICI Physical Layer Specifications
3.3

Physical Layer Characteristics of the 622.080 Mbit/s (STS12C) B-ICI
Complete Subsection will not be implemented at this time.
3.6

Physical Layer Characteristics of the 34.368 Mbit/s (E3) B-ICI
Complete Subsection will not be implemented at this time.

3.7

Physical Layer Characteristics of the 155.520 Mbit/s (SDH) STM1 B-ICI
Complete Subsection will not be implemented at this time.
Section 6: Common B-ICI Operations and Maintenance
6.1.3

Physical Layer Operations of the 622.080 Mbit/s (STS12C)
Complete Subsection will not be implemented at this time.
6.1.4

Physical Layer Operations of the 155.520 Mbit/s (SDH) STM1 B-ICI
Complete Subsection will not be implemented at this time.

Section 9: PVC Based Intercarrier CES Support on a B-ICI
  Complete Section will not be implemented at this time.

Section 11: SMDS Support on a B-ICI
  Complete Section will not be implemented at this time.
Section 12: Usage Measurement
12.3.2

PVC Intercarrier CES
Complete Subsection will not be implemented at this time.

12.3.4

SMDS
Complete Subsection will not be implemented at this time.

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Questions regarding Network Disclosure information can be referred to the individual listed on the Disclosure Announcement, or contact Jamal Boudhaouia, CenturyLink's Manager of Network Disclosures at Jamal.Boudhaouia@CenturyLink.com or (303) 707-8561.