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Union Tandem

Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No. 04-049-145 Exhibit Qwest 1.2. CURRENT NETWORK CONFIGURATION TRAFFIC FLOW. PSTN. Union Tandem. Qwest Tandem. Union ILEC Switch. Meet Point. Union Wireless Switch. Legend Existing Connections.

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Union Tandem

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  1. Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No. 04-049-145 Exhibit Qwest 1.2 CURRENT NETWORK CONFIGURATION TRAFFIC FLOW PSTN Union Tandem Qwest Tandem Union ILEC Switch Meet Point Union Wireless Switch Legend Existing Connections

  2. Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No. 04-049-145 Exhibit Qwest 1.3 Typical Type 2 Interconnection A Wireless Service Provider (WSP) establishes an entrance into a Qwest End Office which then becomes its Serving Wire Center (SWC). From that SWC, a Type 2 Interconnection Facility is extended to the Local Tandem which allows access to all customers being served by all End Offices subtending the Local Tandem within the Local Calling Area via Qwest’s IOF trunking (aka common trunks, or behind the tandem trunks). In addition, a Type 2 Interconnection Facility is extended to the Access/Toll Tandem which allows for completion of toll calls (1+ calls) over the toll trunking network. With Type 2 Interconnection, the WSP obtains an NXX, or a portion of an NXX as needed, that is assigned to the MSC, and that is independent of Qwest’s Network. An MSC functions as a Class 5 End office on the Public Switched Telephone Network (PSTN) and is listed in the LERG. Line number assigned to subscriber associated with MSC To Network outside LCA Mobile Switching Center or WSP POP Entrance Facility Qwest Access/Toll Tandem Type 2 Facility . Qwest End Office & WSP SWC Qwest Local Tandem Type 2 Facility Qwest End Office Qwest End Office Qwest Local Calling Area 1 Legend Local IOF Trunks Qwest End Office Toll Trunks Call Path Interconnection Facility

  3. Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No. 04-049-145 Exhibit Qwest 1.4 QWEST to UNION CELLULAR TRAFFIC FLOW ON AN INTERIM AGREEMENT BASIS Union Tandem Qwest Tandem Meet Point Union Wireless Switch Qwest End Office ILEC Trunk ILEC Trunk

  4. Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No. 04-049-145 Exhibit Qwest 1.5 UNION CELLULAR TO QWEST TRAFFIC FLOW ON AN INTERIM AGREEMENT BASIS Union IXC Qwest Access Tandem FG D Trunks Union Wireless Switch Qwest End Office

  5. Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No. 04-049-145 Exhibit Qwest 1.6 Qwest Toll Tandem Architecture Qwest Local Calling Area 2 Qwest End Office Each Qwest LATA has a minimum of one Access/Toll Tandem. Every End Office within a LATA subtends an Access/Toll Tandem and is connected via toll trunks . In this diagram a LATA with a single Access/Toll Tandem is transporting an Intra-LATA Toll call. Qwest Subscriber 3 Qwest End Office 5. Qwest End Office Qwest Local Tandem Qwest End Office Example Call Flow: 1. Subscriber 1, LCA 1, dials a toll call to Subscriber 3 in LCA 2. It is a 1+ intraLATA call sent without a CIC code. 2. Subscriber 1’s End Office recognizes 1+ dial as a toll call 3. Subscriber 1’s End Office routes call to Access/Toll Tandem over toll trunks. 4. Access/Toll Tandem routes call to Subscriber 3’s End Office in LCA 2 via toll trunking 5. Subscriber 3’s End office routes call to Subscriber 3. Qwest LATA Qwest Access/Toll Tandem 4. Qwest Subscriber 2 Qwest End Office Qwest Local Tandem 2. Qwest End Office Qwest End Office Qwest Local Calling Area 1 3. 1. Legend Qwest Subscriber 1 Local IOF Trunks Qwest End Office Toll Trunks Call Path Interconnection Facility

  6. Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No. 04-049-145 Exhibit Qwest 1.7 Qwest Access Tandem Architecture Qwest Local Calling Area 2 Each Qwest LATA has a minimum of one Access Tandem. Every End Office within a LATA subtends an Access Tandem. In this diagram the Access Tandem is used for the routing of Terminating Switched Access traffic. Qwest End Office Qwest Subscriber 3 Qwest End Office 4. Qwest End Office Qwest Local Tandem Caller Outside of Qwest LATA 1 IXC POP Qwest End Office 2. Qwest LATA Example Call Flow: 1. Caller outside Qwest LATA calls Qwest Subscriber 3. 2. Outside Caller’s IXC transports call to Access Tandem in Qwest LATA where Subscriber 3 resides. 3. Access Tandem routes call to Subscriber 3’s End Office in LCA 2 over toll trunks. 4. Subscriber 3’s End office routes call to Subscriber 3. Qwest Access/Toll Tandem 3. Qwest Subscriber 2 Qwest End Office Qwest Local Tandem 2. Qwest End Office Qwest End Office Qwest Local Calling Area 1 . Legend Qwest Subscriber 1 Local IOF Trunks Qwest End Office Toll Trunks Call Path Interconnection Facility

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