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23 04 Detroit, MI WP qxd 9/15/2004 2:39 PM Page 3 Telephone Provider Information Directory Advertising Services (White & Yellow Pages) Advertising Inquiries * Local Sales Office * For Additional Directories * Additional Customer Services Michigan Relay Center (TTY/Voice) or * Directory Assistance - Local & National * Buried Cable Miss Dig * *To better serve our customers, calls to these telephone numbers may be monitored by supervisory personnel. Pay Phone Sales, Service & Repair * Annoyance Calls * ASK-ZTEL Corporate Headquarters * For Numbers Not Shown Above ASK-ZTEL Other Services & Numbers Local Calling Area Information * Large Business Services Number of Lines 20 or more 20 or more 20 or more 20 or more Sales * Customer Service * Repair * Bill Inquiries * Number of Lines Sales * Customer Service * Repair * Bill Inquiries * Local Calling Area Information * Small Business Services Repair * ASK-ZTEL Home Office Telecom Center * Special Needs Equipt. (TTY/Voice) * Service Assistance Programs * Automated Account Balances * ASK-ZTEL Automated Ordering Service * Local Calling Area Information * ASK-ZTEL Sales * BE-SMART Customer Service * ASK-ZTEL Bill Inquiries * ASK-ZTEL Home Services (Residential) SBC AT&T CoreComm LDMI Telecommunications MCI For further information regarding telecommunication and telephone services, look in the SBC Yellow Pages under Telephone Companies McLeodUSA Metro Teleconnect Navigator Telecommunications RECONEX Sage Telecom Talk America XO Communications Z-Tel Commumunications Telephone Services - Provider Information 3 AMERITECH PUBLISHING, INC. 2004

24 04 Detroit, MI WP qxd 9/15/2004 2:39 PM Page 4 Billing & Payments/Dialing Instructions Telephone Services - Billing & Payments/ Dialing Instructions BILLING & PAYMENTS 1. How your bill is compiled Local service is billed one month in advance. Long distance and other service charges are billed for the past month. 2. Paying your bill You may pay your bill by mail or possibly in person. To locate the nearest bill payment location, call the appropriate telephone number for your local service provider listed on the Telephone Provider Information page. Always note your area code and phone number on the check. When paying by mail, return the remittance portion of your bill and your check to your local service provider at the appropriate address. You are responsible for payment of all charges, including any calls originating from or accepted at your premises and billed to you through your calling card. 3. If you can t pay on time Call the appropriate billing telephone number for your local service provider listed on the Telephone Provider Information page. Your local service provider may be able to help you. You may avoid having your phone disconnected. 4. Disconnection of service Before telephone service is to be disconnected, a notice will be sent by first class mail. The notice will be mailed to you at least five days prior to the disconnect date. Before your service can be reconnected, you should call the appropriate billing telephone number for your local service provider listed on the Telephone Provider Information page to discuss payment of undisputed charges billed. To re-establish service, a deposit may be required. There may also be a charge to reconnect service. Telephone Service Provider Billing And Payment Information SBC Bill Payment Center Saginaw, MI AT&T Residential Customers Call for billing information Business Customers Mail your bill payment to AT&T, P.O. Box , Kansas City, MO CoreComm P.O. Box 2570 Cincinnati, OH LDMI Telecommunications Dept , P.O. Box Detroit, MI MCI Residential Customers Call for billing questions Business Customers call for billing information. McLeodUSA Residential & Business Customers Call the 800 number on your invoice for billing information. Mail your bill payment to P.O. Box 3243 Milwaukee, WI Metro Teleconnect P.O. Box Harrisburg, PA Navigator Telecommunications Mail your payments to: P.O. Box 13860, North Little Rock, AR Residential Customers call Business Customers call RECONEX P.O. Box 40 Hubbard, OR Sage Telecom Mail bill payments to P.O. Box Phoenix, AZ Residential Customers Call for billing questions Business Customers Call for billing questions Talk America P.O. Box 2356 Omaha, NE XO Communications Mail your bill payment to P.O. Box Philadelphia, PA SERVICE ASSISTANCE PROGRAMS HELP FOR LOW INCOME FAMILIES Your local telephone company offers telephone assistance programs to reduce the price of local telephone service for residence customers. Customers who receive aid from the Family Independence Agency, or have a household income equal to, or lower than 150% of the federal income poverty level qualify. For information about telephone assistance eligibility, and application procedures, please contact your local telephone company at the number listed for Service Assistance Programs on the Telephone Provider Information page. DIALING INSTRUCTIONS Directory Assistance When you can t find a number or the listing is new, Directory Assistance can help you. A charge may apply on calls to Directory Assistance. Rates are determined by the company that provides the service. Customers desiring more than one listing per call should inform the operator at the beginning of the call. For local and national numbers Dial For 800, 866, 877, and 888 numbers Dial Dialing Instructions continued on next page Z-Tel Communications, Inc. Residential Customers Call 877-ASK-ZTEL for billing information Business Customers Mail your bill payment to P.O. Box 17286, Baltimore, MD AMERITECH PUBLISHING, INC

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35 Introducing XData from TDS Metrocom... Get both a high-speed Internet connection and local telephone service at a price you can afford. If you have 5 or more phone lines you qualify for XData service. Affordable Available Everywhere Simple Installation Always-on Connection No Speed Caps Static IP Addresses Available One Simple Bill Satisfaction Guaranteed XData brings you fast access to the Internet at speeds ranging from kbps for as low as $49.95 per month and local phone service at competitive rates. Get XData service anywhere in the TDS Metrocom service area, no distance limitations Easy set up just purchase and plug in an affordable Ethernet router Instant and Internet access for your entire office You ll enjoy the same level of performance when sending & receiving information Most network and server needs can be met with XData Get your phone service and Internet access on one simple invoice Try the XData product and get a risk free trial for 180 days Let one of our XData certified consultants show you what you have been missing, call today. 877-METROCOM

36 Do you think faster Internet access is out of your reach? With XData and TDS Metrocom local phone service, your business can experience the same performance of a large corporate network without the high price. Take advantage of immediate productivity gains with an always-on connection to the Internet. XData makes a small business look bigger and a big business more cost-effective. XData provides you with access to powerful business applications such as: To find out more about XData, call today. 877-METROCOM D /03

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38 EXHIBIT AT-12 CONFIDENTIAL

39 1 Background Internet Voice, also known as Voice over Internet Protocol (VoIP), is a technology that allows you to make telephone calls using a broadband Internet connection instead of a regular (or analog) phone line. Some services using VoIP may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number - including local, long distance, mobile, and international numbers. Also, while some services only work over your computer or a special VoIP phone, other services allow you to use a traditional phone through an adaptor. How VoIP / Internet Voice Works VoIP converts the voice signal from your telephone into a digital signal that travels over the Internet. If you are calling a regular phone number, the signal is then converted back at the other end. Internet Voice can allow you to make a call directly from a computer. If you make a call using a phone with an adaptor, you ll be able to dial just as you always have, and the service provider may also provide a dial tone. If your service assigns you a regular phone number, then a person can call you from his or her regular phone without using special equipment. What Kind of Equipment Do I Need? A broadband Internet connection is required to make VoIP calls. Some services allow you to use a regular telephone, as long as you connect it to an adaptor. Some companies allow you to make calls from a computer or a VoIP phone that doesn t require an additional adapter. If you are calling a regular telephone number, the person you are calling does not need any special equipment, just a phone. If I have VoIP Service, Whom Can I Call? Depending upon your service, you might be limited only to other subscribers to the service, or you may be able to call any phone number, anywhere in the world. The call can be made to a local number, a mobile phone, a long distance, or an international number. What Are Some Advantages of VoIP? Because VoIP is digital, it may offer features and services that are not available with a traditional phone. If you have a broadband Internet connection, you need not maintain and pay the additional cost for a line just to make telephone calls. Does My Computer Have to be Turned On? Not if you are making calls with a phone and adaptor or special VoIP phone, but your broadband Internet connection needs to be active. You can also use your computer while talking on the phone. (More)..... Federal Communications Commission Consumer & Governmental Affairs Bureau th St., SW Washington, DC CALL-FCC ( ) TTY: TELL-FCC ( ). Fax: www. fcc. gov/ cgb

40 2 Is There a Difference Between Making a Local Call and a Long Distance Call? Some VoIP providers offer their service for free, normally only for calls to other subscribers to the service. Some VoIP providers charge for a long distance call to a number outside your calling area, similar to existing, traditional wireline telephone service. Other VoIP providers permit you to call anywhere at a flat rate for a fixed number of minutes. Your VoIP provider may permit you to select an area code different from the area in which you live. This means that if your provider charges for long distance, then charges could be based on whether you call within your area code rather than geographic area. It also means that people who call you may incur long distance charges depending on their area code and service. Can I Take My Phone Adapter With me When I Travel? You may be able to use your VoIP service wherever you travel as long as you have a broadband Internet connection available. In that case it would work the same as in your home. How Do I Know If I have a VoIP Phone Call? The phone will ring like any other call. Does the FCC Regulate Internet Voice? The Federal Communications Commission (FCC) has worked to create an environment promoting competition and innovation to benefit consumers. Historically, the FCC has not regulated the Internet or the services provided over it. (More) On February 12, 2004, the FCC found that an entirely Internet-based VoIP service was an unregulated information service. On the same day, the FCC began a broader proceeding to examine what its role should be in this new environment of increased consumer choice and what it can best do to meet its role of safeguarding the public interest. Additional Considerations If you re considering replacing your traditional telephone service with VoIP, there are some possible considerations you should be aware of: Some VoIP services don t work during power outages and the service provider may not offer backup power; It may be difficult for some VoIP services to seamlessly connect with the 911 emergency dispatch center or to identify the location of VoIP 911 callers; VoIP providers may or may not offer directory assistance/white page listings. Aspects of these considerations may change with new development in Internet Voice technology. You should always check with the potential VoIP service provider to confirm any advantages and limitations to their service. Where to Go for Additional Information and Assistance For further information about VoIP, please visit the FCC s Consumer & Governmental Affairs Bureau at ### For this or any other consumer publication in an accessible format (electronic ASCII text, Braille, large print, or audio), please write or call us at the address or phone number below, or send an to FCC504@fcc.gov. To receive information on this and other FCC consumer topics through the Commission's electronic subscriber service, click on This document is for consumer education purposes only and is not intended to affect any proceeding or cases involving this subject matter or related issues Federal Communications Commission Consumer & Governmental Affairs Bureau th St., SW Washington, DC CALL-FCC ( ) TTY: TELL-FCC ( ). Fax: www. fcc. gov/ cgb