Network Disclosure Announcement #495

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

Qwest IP Centrex - Updated 27 September 2006

Implementation Date: Third Quarter 2006 Previous Update Date: 30 September 2005 Original Date Posted: 28 August 2003
Summary:	Internet Protocol Centrex (IP Centrex) is a Voice service integrated with our existing Centrex offering. The IP Centrex service will provide our medium and large business customers with a Centrex Service that interfaces with IP telephones on their data network. This new interface will be provided through the use of the IP Centrex Enabling technology. The Telephone Company provided Enabled Architecture provides a transparent transport between our selected Class 5 switches and the customer’s IP enabled devices. This allows the standard set of Centrex features, including Analog and ISDN Features, to be offered to the customer’s IP enabled devices. The Enabled Architecture uses the H.323 protocol, which permits circuit switched voice to interconnect with the customer's LAN (local area network), allowing the customer to utilize Voice over IP functionality on their LAN. Network Changes include: The individual Centrex user can utilize a H.323 compatible IP enabled telephone set or H323 and MGCP compatible gateways and legacy CPE to register with a Telephone Company IP Centrex Enabling Platform’s Voice Gateway (iMerge Centrex Feature Gateway) in our managed network. All user attempts to use the IP enabled devices will be managed by the IP Centrex Enabling Platform and all features and call routing will be provided by the central office switch. The Telephone Company IP Centrex Enabling Platform utilizes the LUCENT IP Centrex product. This solution connects over a standard GR303 interface to selected 5ESS and DMS100 Class 5 central offices. The Telephone Company managed network will interface over customer dedicated transport with the customer’s LAN on a DS1, DS3 or OC3. The IP Centrex customer’s LAN and dedicated transport bandwidth must meet Telephone Company prerequisite customer interface requirements to support service level agreements. Customers interface requirements and service location negotiated at time of service agreement. Centrex CPE (IP Telephone Set and H.323 or MGCP gateway) Manufacturers and Customer LAN (Router/Firewall) Manufacturers must meet IP Centrex Customer Interface Specifications for Product Compatibility. The Telephone Company IP Centrex Enabling Technology deployment utilizes the LUCENT product. The integrated IP Centrex Enabling platform consists of two Network Elements: iMerge Centrex Feature Gateway and Cisco GXXX or 7XXX series router.  Information about the Lucent iMerge Centrex Feature Gateway (CFG) product line can be obtained from Lucent Technologies (www.lucent.com).
Locations and Timing of Deployment:	IP Centrex Points are geographic locations, designated by Qwest, which will be disclosed at the make-buy point. The list of IP Centrex Points can be found in Attachment 1.
Pricing:	Pending regulatory approval, Qwest IP Centrex service will be offered under Centrex Prime tariffs in locations identified in Attachment 1.
Interface Requirements:	Standards supported for this deployment: ITU-T Recommendation H.323 v2 (or higher), Packet-Based Multimedia Communications Systems ITU-T Recommendation H.225.0 v2 (or higher), Call signaling protocols and media stream packetization for packet based multimedia communication systems. ITU-T Recommendation H.245 v3 (or higher), Control protocol for multimedia communication. ITU-T Recommendation H.235 v2 (or higher), Security and encryption for H-Series multimedia terminals. ITU-T Recommendation G.711 “Pulse Code Modulation (PCM) of Voice Frequencies”, 1993 ITU-T Recommendation G.723.1 “Dual Rate Speech Coder for Multimedia Communications Transmitting at 5.3 and 6.3 kbits/s”; 03/96 ITU-T Recommendation G.729 “Coding of Speech at 8 kbits/s using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP)”; 03/96 ITU-T Recommendation G.729 “Annex A: Reduced Complexity 8 kbits/s CS-ACELP Speech Codec”; 11/96 RFC 2705, Media Gateway Control Protocol (MGCP) Version 1.0, October 1999 Standards Organizations: ITU – T Recommendations www.ITU.org RFC www.IETF.ORG
Additional Information:	Any customer premises equipment vendor/manufacturer or enhanced services provider desiring additional technical information in conjunction with these interfaces provided by Qwest may contact: Steve Chittick Qwest 700 W Mineral Ave Littleton, CO 80122 (303) 707 7108 Steve.Chittick@qwest.com
Following are locations associated to the IP Centrex network.  This list is subject to change.  An asterisk in the margin denotes a change or addition to the previous release. N/A = Not Available ARIZONA   Metropolitan Serving Area Availability Date * Phoenix 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) * Tucson 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) COLORADO   Metropolitan Serving Area Availability Date * Denver 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) * Colorado Springs (Rate Center) 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) MINNESOTA   Metropolitan Serving Area Availability Date * Minneapolis - St. Paul 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) NEBRASKA   Metropolitan Serving Area Availability Date * Omaha 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) NEW MEXICO   Metropolitan Serving Area Availability Date * Albuquerque 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) * Santa Fe 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) UTAH   Metropolitan Serving Area Availability Date * Salt Lake City 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) WASHINGTON   Metropolitan Serving Area Availability Date * Olympia 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) * Seattle 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point) * Tacoma 3rd Qtr 2007 (Availability is Dependant on the Make-Buy Point)