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

Qwest Local Tandem Typical Type 2 Interconnection Qwest Local Calling Area 1 Qwest End Office Qwest End Office Qwest End Office Qwest End Office & WSP SWC Qwest Access/Toll Tandem. Mobile Switching Center or WSP POP Entrance Facility Type 2 Facility 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. To Network outside LCA Legend Local IOF Trunks Toll Trunks Call Path Interconnection Facility Line number assigned to subscriber associated with MSC Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No Exhibit Qwest 1.3

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

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

Qwest End Office Qwest Local Tandem Qwest Toll Tandem Architecture Qwest Local Calling Area 1 Qwest End Office Qwest End Office Qwest End Office Qwest End Office Qwest End Office Qwest End Office Qwest End Office Qwest Local Tandem Qwest Local Calling Area 2 Qwest Access/Toll Tandem Qwest LATA 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 Subscriber 1 Qwest Subscriber 2 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 Legend Local IOF Trunks Toll Trunks Call Path Interconnection Facility Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No Exhibit Qwest 1.6

Qwest End Office Qwest Local Tandem Qwest Access Tandem Architecture Qwest Local Calling Area 1 Qwest End Office Qwest End Office Qwest End Office Qwest End Office Qwest End Office Qwest End Office Qwest End Office Qwest Local Tandem Qwest Local Calling Area 2 Qwest Access/Toll Tandem Qwest LATA 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 Subscriber 3 Qwest Subscriber 1 Qwest Subscriber 2 Example Call Flow: 1. Caller outside Qwest LATA calls Qwest Subscriber 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 IXC POP Caller Outside of Qwest LATA 1 2. Legend Local IOF Trunks Toll Trunks Call Path Interconnection Facility Direct Testimony of Ann Marie Cederberg Qwest Corporation Docket No Exhibit Qwest 1.7