Public Notice of Network Change(s), Pursuant to CFR 47, subsections 51.325 - 51.335.
CenturyLink’s Internet address: http://www.qwest.com/disclosures.

CenturyLink Metro Ethernet-QC (formerly QWEST® Metro Optical Ethernet “MOE”) is a Layer 2 intelligent Ethernet switching service that offers enterprise and carrier customers the ability to interconnect standard LAN interfaces between customer locations in designated CenturyLink Wire Centers where facilities are available. The CenturyLink  interface to the customer will be either standard metallic, single-mode fiber and multi-mode fiber facilities.

Central Office Bandwidth Profile is a Metro Ethernet  offering that originates and terminates in the same central office for use with SST, GeoMax and SHNS Ethernet Ports. This Bandwidth Profile can also be used for Collocation. Locations where Central Office Bandwidth Profile is available are listed in attachment 1.

Ethernet with Extended Transport (EwET) Bandwidth Profile offers Metro Ethernet outside the designated Metro Ethernet  service area (listed in attachment 1) via EwET using the EwET customer interface. A Company-provided DS3 as described in Section 7 PRIVATE LINE ACCESS SERVICE, is also required.**

CenturyLink Metro Ethernet  service offers the following IEEE 802.3-2002, Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications standard UNIs. Not all UNIs available on copper facilities:

10Base-T ports - 10 Mbps full duplex Local Area Network interface over two pairs of twisted-pair telephone or Category 3, 4 or 5 (recommended) copper wire with a RJ-45 connector.

100Base-TX ports - 100 Mbps full duplex Local Area Network interface over two pairs of Category 5 Unshielded Twisted-Pair (UTP) or Shielded Twisted-Pair (STP) copper wire with an RJ-45 connector.

1000Base-T ports - 1000 Mbps full duplex Local Area Network interface using four pairs of Category 5 balanced copper cabling with a RJ-45 connector .

1000Base LX ports - 1000 Mbps full duplex Local Area Network interface using Long Wavelength (1310 nm) lasers over one pair of Single-Mode Fiber (SMF) with a duplex FC-PC connector

1000Base SX ports - 1000 Mbps full duplex Local Area Network interface over one pair of Multi-Mode Fiber (MMF)

10Base-T UNIs with a 3, 5,7 or 10 Mbps Bandwidth Profile/NAL as well as 100Base-TX UNIs with a 3, 5, 7, 10,20 or 30 Mbps Bandwidth Profile/NAL may also be delivered to a customer premises via various standard IEEE 802.3ah Ethernet over bonded copper pair topologies using enhanced SHDSL modems.

CenturyLink will place an Ethernet terminal at the End-User premises for User-Network Interfaces (UNIs).  Customer traffic will be transported from each UNI to a CenturyLink Central Office (CO) core switch using a rate-limited Network Access Link (NAL). NALs are available in customer-specified bandwidth increments from 5 Mbps up to 1 Gbps.  The physical UNI as well as NAL bandwidth can be different at each location.

The Metro Ethernet network between customer locations is not dedicated to one user but shared between multiple customers.  Virtual LANs (VLANs) are used by CenturyLink to separate customer's traffic over the shared network. VLANs will conform to the IEEE 802.1Q standards.

CenturyLink Metro Ethernet  Service Points are geographic locations, designated by CenturyLink, where the Metro Ethernet  network can be accessed. Customer premises with a Serving Wire Center that is not designated as a CenturyLink Metro Ethernet Service Point will not be able to connect to the CenturyLink Metro Ethernet network.  The list of Metro Ethernet Service Points can be found in Attachment 1.

Technical information about CenturyLink Metro Ethernet is contained in CenturyLink Communications' Technical Publication #77411, "Qwest® Metro Optical Ethernet Service."

The Technical Publication is posted at the following web site:
http://www.qwest.com/techpub/

ISO/IEC 15802-3: 1998 [ANSI/IEEE Std 802.1D, 1998 Edition] Information technology – Telecommunications and information exchange between systems – Local and metropolitan area networks – Common specifications – Part 3: Media Access Control (MAC) Bridges

IEEE Std 802.3-2002 IEEE Standard for Information technology – Telecommunications and information exchange between systems – Local and metropolitan area networks – Specific requirements – Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications

• CenturyLink will manually provision the speed and full duplex transmission mode on all 10/100/1000 Mbps Metro Ethernet customer facing switch ports.  Auto-sensing and auto-negotiating will not be supported at the UNI.
• Multiple interfaces using IEEE 802.3ad Link Aggregation or, 802.1d, 802.1w Rapid or 802.1s Multiple Spanning Tree Protocol for increased bandwidth and/or link redundancy/load balancing are currently not CenturyLink Metro Ethernet service options at the UNI.
• The UNI associated with CenturyLink Metro Ethernet for LAN interconnection will not provide the repeater functionality as described in IEEE 802.3-2002.

IEEE Std 802.1Q-1998 IEEE Standards for Local and Metropolitan Area Networks: Virtual Bridged Local Area Networks

IEEE Std 802.3ah – Ethernet First Mile (EFM) –Defines standards for short and long reach over copper.

Theresa Smethers
Theresa.smethers@lumen.com

Notes:

i. CenturyLink will deploy if a viable customer request is received and a contract is signed & switch availability.
ii. This site was erroneously disclosed originally.
iii CenturyLink will deploy capacity and/or switch if customer accepts full charge for such deployment.
iv. Effective December 1, 2022, Ethernet over Copper or Ethernet over DS1 is no longer available. Fiber design options will be evaluated on an ICB basis.

* denotes a change or addition to the previous release